DTC P1604: Startability Malfunction: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
4. Read the DTCs and record the Freeze Frame Data.

   HINT: 

   • This freeze frame data shows the actual engine conditions when engine starting trouble occurred.
   • When confirming the freeze frame data, be sure to check all 5 data sets of freeze frame data.
   • The fourth set of freeze frame data is the data recorded when the DTC is stored.
   Fig 1: Identifying Freeze Frame Data

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	DTC is stored
   *b	0.5 seconds
   *c	freeze frame data recorded point

   RESULT
   
   

   Result	Proceed to
   Only DTC P1604 is output	A
   DTCs other than P1604 are output	B

B → See step   117 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Immobiliser Fuel Cut.
5. Read the value displayed on the Techstream.

   OK

   Immobiliser Fuel Cut is OFF

   HINT: 

   After reconnecting the battery cable, if the engine is started immediately (without waiting 1.8 seconds after turning the engine switch on (IG)), the engine will stop (due to the key verification process). The engine can be started after that.

NG → See step   118 

OK: Go to next step 

1. Confirm the problem symptoms.
   RESULT
   
   

   Result	Proceed to
   Freeze frame data exists, but the starting difficulty cannot be reproduced and it is unknown what kind of starting difficulty occurred	A
   The problem symptoms can be reproduced, or the malfunction conditions are known	B

B → See step   25 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to FREEZE FRAME DATA .

   Result

   Freeze Frame Data Item		Suspected Area	Proceed to
   Engine Speed	Battery Voltage
   All 5 sets of freeze frame data are 0 rpm (no engine cranking at all)	Minimum voltage is less than 5 V	Battery fully depleted	A
   	Minimum voltage is 5 V or higher	Starter malfunction Crankshaft position sensor system Excess engine friction Immobiliser system ECM	B
   60 to 250 rpm (engine cranks but no initial combustion)	-	Fuel pump control system Ignition system Engine coolant temperature sensor Immobiliser system Fuel injection system	C
   250 rpm or higher (combustion occurs but initial combustion and starter turnoff occur late)	-	Engine assembly Fuel injection system Fuel pump control system	D

   HINT: 

   When DTC P1604 is stored, either "Engine Start Hesitation"*1 or "Low Rev for Eng Start"*2 in the Freeze Frame Data will be ON. If "Low Rev for Eng Start" is ON, proceed to E.

   *1: This value turns ON when the engine speed does not reach a certain value for a certain period of time when starting the engine.

   *2: This value turns ON when the engine stalls immediately after starting the engine. If "Low Rev for Eng Start" is ON, as there is a possibility that the low engine speed or engine stall was caused by the user, confirm the following freeze frame data items.

   • Immobiliser Fuel Cut
   • Engine Speed (Starter Off)
   • Shift SW Status (R, D Range)

B → See step   5 

C → See step   10 

D → See step   15 

E → See step   51 

A → CHARGE OR REPLACE BATTERY 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to FREEZE FRAME DATA .

   Result

   Freeze Frame Data Item	Result	Suspected Area	Proceed to
   Battery Voltage	Minimum voltage is 6 V or higher and voltage does not fluctuate*1	Starter system	A
   	Minimum voltage is 6 V or higher and voltage fluctuates*2, *3	Crankshaft position sensor system ECM	B
   	Minimum voltage is 5 to 6 V*4	Excess engine friction Battery fully depleted	C

   TEXT IN ILLUSTRATION
   
   

   *a	Freeze Frame Data
   *b	Voltage does not Fluctuate
   *c	Voltage Fluctuates

   HINT: 

   • *1: The 5 sets of freeze frame data show approximately the same battery voltage.
     Fig 2: Identifying Freeze Frame Data

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   • *2: The 5 sets of freeze frame data show different battery voltages.
   • *3: If the voltage fluctuates, it can be determined that cranking is being performed. When the engine speed is 0 rpm, the crankshaft position sensor system and/or the ECM may be malfunctioning.
   • *4: There may be excess engine friction. Make sure that the crankshaft rotates smoothly when turning it by hand. Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.

B → See step   6 

C → CHECK AND REPAIR ENGINE OR BATTERY 

A → See step   119 

1. Check the tightening and installation condition of the crankshaft position sensor bolt.
2. Check the connection of the crankshaft position sensor connector.
   RESULT
   
   

   Result	Proceed to
   Normal	A
   Abnormal	B

B → See step   120 

A: Go to next step 

1. Disconnect the crankshaft position sensor connector.
2. Check for oil on the connector terminals.

   OK

   No oil on the terminals.

NG → See step   121 

OK: Go to next step 

1. Disconnect the crankshaft position sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C42-1 (NE+) - C28-6 (NE+)	Always	Below 1 Ω
   C42-2 (NE-) - C28-5 (NE-)	Always	Below 1 Ω
   C42-3 (VC) - C28-16 (VCV2)	Always	Below 1 Ω
   C42-1 (NE+) or C28-6 (NE+) - Body ground	Always	10 kΩ or higher
   C42-2 (NE-) or C28-5 (NE-) - Body ground	Always	10 kΩ or higher
   C42-3 (VC) or C28-16 (VCV2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   122 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to FREEZE FRAME DATA .

   Result

   Freeze Frame Data Item			Suspected Area	Proceed to
   Coolant Temp, Ambient Temperature, Intake Air	Coolant Temp, Ambient Temperature	Fuel Pump Duty
   Difference between Coolant Temp, Ambient Temperature and Intake Air is 10°C or more*1	Coolant Temp is 125°C or more, or lower than Ambient Temperature by 15°C or more	-	Engine coolant temperature sensor	A
   	Other than above	All 5 sets of freeze frame data are except 0%	-	B
   		At least 1 of the 5 sets of freeze frame data is 0%	Fuel pump control system	C
   Difference between Coolant Temp, Ambient Temperature and Intake Air is less than 10°C*2	-	At least 1 of the 5 sets of freeze frame data is 0%	Fuel pump control system	C
   		All 5 sets of freeze frame data are except 0%	-	B

   HINT: 

   • *1: A long time had not elapsed after stopping the engine.
   • *2: A long time had elapsed after stopping the engine.

B → See step   11 

C → See step   124 

A → See step   123 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
4. When performing the Active Test, check for an operating sound from the fuel pump.

   Standard

   Control the Fuel Pump / Speed	Specified Condition
   ON	Operating sound heard
   OFF	Operating sound not heard

   HINT: 

   Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

NG → See step   125 

OK: Go to next step 

Fig 3: Identifying Front View Of Wire Harness Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the injector connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Cylinder	Tester Connection	Switch Condition	Specified Condition
   No. 1	E1-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 2	n1-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 3	E2-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 4	n2-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 5	E3-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 6	n3-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 7	E4-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 8	n4-2 - Ground	Engine switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel injector assembly)

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
4. When performing the Active Test, check for fuel leakage from the fuel pipes.
   RESULT
   
   

   Result	Proceed to
   Fuel leakage or signs of fuel leakage are present	A
   No fuel leakage or signs of fuel leakage	B

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning.
   • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.

B → See step   14 

A → REPAIR OR REPLACE FUEL LINE 

1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck.
   RESULT
   
   

   Result	Proceed to
   There is foreign matter or signs that fuel pump was stuck	A
   There is no foreign matter and no signs that fuel pump was stuck	B

B → See step   24 

A → REPAIR OR REPLACE FUEL SYSTEM 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to FREEZE FRAME DATA .

   Result

   Freeze Frame Data Item				Suspected Area	Proceed to
   Coolant Temp, Ambient Temperature, Intake Air	Coolant Temp, Ambient Temperature	Long FT	Engine Speed
   Difference between Coolant Temp, Ambient Temperature and Intake Air is 10°C or more	Coolant Temp is 125°C or more, or lower than Ambient Temperature by 15°C or more	-	-	Engine coolant temperature sensor	A
   	Other than above	-15% or less, or +15% or more	-	Fuel pump control system Fuel injector	B
   		-15 to +15%	Minimum speed is 300 rpm or more*1	Engine assembly	C
   			Minimum speed is below 300 rpm	Fuel system Intake air system	D
   Difference between Coolant Temp, Ambient Temperature and Intake Air is less than 10°C	-	-15% or less, or +15% or more	-	Fuel pump control system Fuel injector	B
   		-15 to +15%	Minimum speed is 300 rpm or more*1	Engine assembly	C
   			Minimum speed is below 300 rpm	Fuel system Intake air system	D

   HINT: 

   *1: Compression loss may have occurred in the engine assembly.

B → See step   16 

C → CHECK AND REPAIR ENGINE 

D → See step   18 

A → See step   126 

1. Check that no carbon is stuck to the fuel injector.

   OK

   No carbon present.

NG → See step   127 

OK: Go to next step 

1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck.
   RESULT
   
   

   Result	Proceed to
   There is foreign matter or signs that fuel pump was stuck	A
   There is no foreign matter and no signs that fuel pump was stuck	B

B → See step   24 

A → REPAIR OR REPLACE FUEL SYSTEM 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to FREEZE FRAME DATA .

   Result

   Freeze Frame Data Item	Result	Suspected Area	Proceed to
   Coolant Temp	Engine coolant temperature is 40°C or less*1	Pressure regulator	A
   	Engine coolant temperature is 40 to 90°C*2	Fuel injector	B
   	Engine coolant temperature is 90°C or more*3	Pressure regulator	A

   HINT: 

   *1: If the engine coolant temperature is 40°C or less (after stopping the engine and the vehicle is not driven for a long period of time), the pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *2: If the engine coolant temperature is 40 to 90°C (15 to 120 minutes have passed after stopping the engine), there may be fuel leaking from a fuel injector.

   *3: If the engine coolant temperature is 90°C or more (2 to 5 minutes have passed after stopping the engine), there may be a problem with the pressure regulator failing to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

B → See step   20 

A: Go to next step 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION - Step 2 .

1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.

   Standard

   147 kPa (1.5 kgf/cm² ) or higher (5 minutes after stopping the engine)

   HINT: 

   If the engine cannot be started, read the values after cranking the engine.

   RESULT
   
   

   Result	Proceed to
   Normal	A
   Abnormal	B

A → See step   24 

B → See step   172 

1. Clean the inside of the surge tank with compressed air.
2. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.

   Result

   Result	Proceed to
   400 ppm or higher	A
   Less than 400 ppm	B

   HINT: 

   If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem.

B → See step   22 

A: Go to next step 

1. Inspect the fuel injectors. Refer to INSPECTION .

   Result

   Result	Proceed to
   Abnormal	A
   Normal	B

B → See step   22 

A → See step   173 

1. Check if carbon is in the air flow passage.

   Result

   Result	Proceed to
   Carbon in passage	A
   No carbon present	B

B → See step   23 

A → See step   128 

1. Check the intake system for vacuum leak. Refer to ON-VEHICLE INSPECTION - Step 3 .

   OK

   No leak in intake system.

NG → REPAIR OR REPLACE INTAKE SYSTEM 

OK: Go to next step 

1. Check if the engine can be started.

   Result

   Result	Proceed to
   Engine can be started	A
   Engine cannot be started	B

B → See step   25 

A → END 

1. Confirm the problem symptoms.

   HINT: 

   The problem symptoms below can be determined by reading the freeze frame data.

   Result

   Problem Symptom	Suspected Area	Proceed to
   The engine does not crank	Battery fully depleted Starter (includes pinion gear wear or teeth damage) Starter system Engine assembly (excess friction) Drive plate wear or teeth damage	A
   Abnormal cranking speed	Battery fully depleted Starter Engine assembly (excess friction, compression loss)	B
   There is no initial combustion (combustion does not occur even once)*1	Pressure regulator fuel pressure maintenance Fuel injector leak Fuel leak from fuel line Fuel pump control system Fuel pump Spark plug Crankshaft position sensor system Ignition coil system EGR valve	C
   The engine stalls after starter turnoff (engine stalls immediately after the first time the engine speed increases)*2	Intake system connections Throttle body Camshaft timing oil control valve Mass air flow meter system EGR valve	D
   The initial combustion and starter turnoff occur late*3	Engine coolant temperature sensor Mass air flow meter Air fuel ratio sensor Heated oxygen sensor Fuel injector Spark plug Pressure regulator Fuel pump Fuel pump control system	E

   HINT: 

   • If there is hesitation (cranking speed is slow and combustion occurs before passing TDC) during the initial cranking period, the battery charge may be insufficient or the starter may be malfunctioning.
   • *1: If there is no initial combustion, a wire harness may be malfunctioning, or the ignition or fuel system may be malfunctioning.
   • *2: If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the camshaft timing oil control valve may have a problem returning.
   • *3: If the initial combustion and starter turnoff occur late, the fuel injection volume may be incorrect (too low or too high).

B → See step   32 

C → See step   35 

D → See step   51 

E → See step   60 

A: Go to next step 

1. When cranking the engine, check for a noise indicating that the starter pinion gear is extending, and check that the starter pinion gear is not spinning freely.

   Result

   Problem Symptom	Suspected Area	Proceed to
   A noise indicating that the starter pinion gear is extending is heard and the starter pinion gear is not spinning freely.*1	Battery Excess engine friction Starter	A
   A noise indicating that the starter pinion gear is extending is heard but the starter pinion gear is spinning freely.	Drive plate Starter	B
   A noise indicating that the starter pinion gear is extending is not heard	Battery Starter Starter system	C

   HINT: 

   *1: The battery may be fully depleted or there may be excess engine friction.

B → See step   29 

C → See step   30 

A: Go to next step 

1. Check the electrolyte quantity.
   Fig 4: Inspecting Battery

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard

   Electrolyte quantity is within the specified range.

2. Inspect the specific gravity.
   1. Inspect the specific gravity of each cell.

      Standard specific gravity

      1.25 to 1.29 (electrolyte is at 20°C (68°F))

      HINT: 

      • If the result is not as specified, recharge or replace the battery.
      • It is not necessary to inspect a maintenance-free battery.
3. Inspect the battery voltage.
   1. Turn the engine switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
   2. Measure the battery voltage.

      Standard voltage

      12.5 to 12.9 V (electrolyte is at 20°C (68°F))

      HINT: 

      If the result is not as specified, recharge or replace the battery.

   3. Measure the battery voltage when cranking the engine.

      Standard

      Approximately 6 V or higher (0°C (32°F) or higher)

      HINT: 

      When the battery is depleted, the horn becomes quieter.

NG → CHARGE OR REPLACE BATTERY 

OK: Go to next step 

1. Check that the crankshaft rotates smoothly when rotating it by hand.

   OK

   Crankshaft rotates smoothly.

   HINT: 

   Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.

NG → REPAIR OR REPLACE ENGINE ASSEMBLY 

OK → INSPECT STARTER 

1. Remove the starter. Refer to REMOVAL .
2. Check for starter pinion gear wear and damage.

   Standard

   There is no wear or damage.

NG → REPLACE STARTER 

OK → See step   129 

1. Check the electrolyte quantity.
   Fig 5: Inspecting Battery

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard

   Electrolyte quantity is within the specified range.

2. Inspect the specific gravity.
   1. Inspect the specific gravity of each cell.

      Standard specific gravity

      1.25 to 1.29 (electrolyte is at 20°C (68°F))

      HINT: 

      • If the result is not as specified, recharge or replace the battery.
      • It is not necessary to inspect a maintenance-free battery.
3. Inspect the battery voltage.
   1. Turn the engine switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
   2. Measure the battery voltage.

      Standard voltage

      12.5 to 12.9 V (electrolyte is at 20°C (68°F))

      HINT: 

      If the result is not as specified, recharge or replace the battery.

   3. Measure the battery voltage when cranking the engine.

      Standard

      Approximately 6 V or higher (0°C (32°F) or higher)

      HINT: 

      When the battery is depleted, the horn becomes quieter.

NG → CHARGE OR REPLACE BATTERY 

OK: Go to next step 

1. Inspect the starter. Refer to INSPECTION .

NG → REPLACE STARTER 

OK → See step   130 

1. Check the cranking speed.

   Result

   Problem Symptom	Suspected Area	Proceed to
   Cranking speed is slow (100 rpm or less)	Battery Starter Excess engine friction	A
   Cranking speed is fast (300 rpm or more)*1	Engine compression loss	B

   HINT: 

   *1: If the cranking speed is fast, there may be compression loss.

B → CHECK AND REPAIR ENGINE 

A: Go to next step 

1. Check the electrolyte quantity.
   Fig 6: Inspecting Battery

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard

   Electrolyte quantity is within the specified range.

2. Inspect the specific gravity.
   1. Inspect the specific gravity of each cell.

      Standard specific gravity

      1.25 to 1.29 (electrolyte is at 20°C (68°F))

      HINT: 

      • If the result is not as specified, recharge or replace the battery.
      • It is not necessary to inspect a maintenance-free battery.
3. Inspect the battery voltage.
   1. Turn the engine switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
   2. Measure the battery voltage.

      Standard voltage

      12.5 to 12.9 V (electrolyte is at 20°C (68°F))

      HINT: 

      If the result is not as specified, recharge or replace the battery.

   3. Measure the battery voltage when cranking the engine.

      Standard

      Approximately 6 V or higher (0°C (32°F) or higher)

      HINT: 

      When the battery is depleted, the horn becomes quieter.

NG → CHARGE OR REPLACE BATTERY 

OK: Go to next step 

1. Check that the crankshaft rotates smoothly when rotating it by hand.

   OK

   Crankshaft rotates smoothly.

   HINT: 

   Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.

NG → REPAIR OR REPLACE ENGINE 

OK → INSPECT STARTER 

1. Using a sound scope or screwdriver, check for an injector operating noise while cranking the engine.

   OK

   Fuel injector operating noise is heard.

NG → See step   48 

OK: Go to next step 

1. Inspect the fuel pressure. Refer to ON-VEHICLE INSPECTION - Step 2 .

NG → See step   46 

OK: Go to next step 

1. Check for sparks. Refer to ON-VEHICLE INSPECTION - Step 1 .

NG → See step   41 

OK: Go to next step 

1. Confirm the conditions present when the malfunction occurred based on the customer problem analysis.

   Result

   Problem Symptom	Suspected Area	Proceed to
   When the engine is stopped and a long time has passed, engine starting trouble occurs*1	Pressure regulator is stuck open	A
   When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2	Fuel injector leak	B
   When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3	Failure to maintain fuel pressure by pressure regulator	A
   Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs	-	C*4

   HINT: 

   *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *2: Fuel may be leaking from a fuel injector.

   *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *4: From step 74, perform fuel system troubleshooting C (steps 75 to 79).

B → See step   40 

C → See step   74 

A: Go to next step 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION - Step 2 .

1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.

   Result

   Result	Proceed to
   147 kPa (1.5 kgf/cm2) or higher (5 minutes after stopping the engine)	A*1
   Less than 147 kPa (1.5 kgf/cm2) (5 minutes after stopping the engine)	B

   HINT: 

   • If the engine cannot be started, check the fuel pressure after cranking the engine.
   • *1: From step 74, perform fuel system troubleshooting C (steps 75 to 79).

A → See step   74 

B → See step   131 

1. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.

   Result

   Result	Proceed to
   400 ppm or higher	A
   Less than 400 ppm	B*1

   HINT: 

   • If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem.
   • *1: From step 74, perform fuel system troubleshooting C (steps 75 to 79).

B → See step   74 

A → See step   132 

1. Inspect the spark plugs. Refer to ON-VEHICLE INSPECTION - Step 3 .

   HINT: 

   Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders.

NG → See step   133 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select [Engine Speed] of the Data List.
4. Start the engine.
5. While running the engine, read the [Engine Speed] value.

   Standard

   A value that matches the actual engine speed is constantly output.

   HINT: 

   • Check the engine speed using a line graph.
   • If the engine cannot be started, check the engine speed while cranking the engine.
   • If the engine speed is 0 rpm, the crankshaft position sensor may have an open or short circuit.

NG → See step   134 

OK: Go to next step 

Fig 7: Identifying Ignition Coil With Igniter Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the ignition coil with igniter connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   C1-1 (+B) - C1-4 (GND)	Engine switch on (IG)	11 to 14 V
   C2-1 (+B) - C2-4 (GND)	Engine switch on (IG)	11 to 14 V
   C3-1 (+B) - C3-4 (GND)	Engine switch on (IG)	11 to 14 V
   C4-1 (+B) - C4-4 (GND)	Engine switch on (IG)	11 to 14 V
   C5-1 (+B) - C5-4 (GND)	Engine switch on (IG)	11 to 14 V
   C6-1 (+B) - C6-4 (GND)	Engine switch on (IG)	11 to 14 V
   C39-1 (+B) - C39-4 (GND)	Engine switch on (IG)	11 to 14 V
   C40-1 (+B) - C40-4 (GND)	Engine switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Ignition Coil with Igniter)

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → See step   135 

OK: Go to next step 

1. Disconnect the ignition coil with igniter connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C1-2 (IGF1) - C30-6 (IGF1)	Always	Below 1 Ω
   C2-2 (IGF2) - C31-5 (IGF2)	Always	Below 1 Ω
   C3-2 (IGF2) - C31-5 (IGF2)	Always	Below 1 Ω
   C4-2 (IGF1) - C30-6 (IGF1)	Always	Below 1 Ω
   C5-2 (IGF2) - C31-5 (IGF2)	Always	Below 1 Ω
   C6-2 (IGF1) - C30-6 (IGF1)	Always	Below 1 Ω
   C39-2 (IGF1) - C30-6 (IGF1)	Always	Below 1 Ω
   C40-2 (IGF2) - C31-5 (IGF2)	Always	Below 1 Ω
   C1-2 (IGF1) or C30-6 (IGF1) - Body ground	Always	10 kΩ or higher
   C2-2 (IGF2) or C31-5 (IGF2) - Body ground	Always	10 kΩ or higher
   C3-2 (IGF2) or C31-5 (IGF2) - Body ground	Always	10 kΩ or higher
   C4-2 (IGF1) or C30-6 (IGF1) - Body ground	Always	10 kΩ or higher
   C5-2 (IGF2) or C31-5 (IGF2) - Body ground	Always	10 kΩ or higher
   C6-2 (IGF1) or C30-6 (IGF1) - Body ground	Always	10 kΩ or higher
   C39-2 (IGF1) or C30-6 (IGF1) - Body ground	Always	10 kΩ or higher
   C40-2 (IGF2) or C31-5 (IGF2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the ignition coil with igniter connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C1-3 (IGT1) - C30-24 (IGT1)	Always	Below 1 Ω
   C2-3 (IGT2) - C29-27 (IGT2)	Always	Below 1 Ω
   C3-3 (IGT3) - C30-27 (IGT3)	Always	Below 1 Ω
   C4-3 (IGT4) - C29-26 (IGT4)	Always	Below 1 Ω
   C5-3 (IGT5) - C29-25 (IGT5)	Always	Below 1 Ω
   C6-3 (IGT6) - C30-28 (IGT6)	Always	Below 1 Ω
   C39-3 (IGT7) - C30-26 (IGT7)	Always	Below 1 Ω
   C40-3 (IGT8) - C30-25 (IGT8)	Always	Below 1 Ω
   C1-3 (IGT1) or C30-24 (IGT1) - Body ground	Always	10 kΩ or higher
   C2-3 (IGT2) or C29-27 (IGT2) - Body ground	Always	10 kΩ or higher
   C3-3 (IGT3) or C30-27 (IGT3) - Body ground	Always	10 kΩ or higher
   C4-3 (IGT4) or C29-26 (IGT4) - Body ground	Always	10 kΩ or higher
   C5-3 (IGT5) or C29-25 (IGT5) - Body ground	Always	10 kΩ or higher
   C6-3 (IGT6) or C30-28 (IGT6) - Body ground	Always	10 kΩ or higher
   C39-3 (IGT7) or C30-26 (IGT7) - Body ground	Always	10 kΩ or higher
   C40-3 (IGT8) or C30-25 (IGT8) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.
   • If the wire harness is normal, after replacing the ignition coil, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 74 and perform troubleshooting for the ignition system (steps 80 to 85).

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   136 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
4. When performing the Active Test, check for an operating sound from the fuel pump.

   Standard

   Control the Fuel Pump / Speed	Specified Condition
   ON	Operating sound heard
   OFF	Operating sound not heard

   HINT: 

   Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

NG → See step   137 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
4. When performing the Active Test, check for fuel leakage from the fuel pipes.
   RESULT
   
   

   Result	Proceed to
   Fuel leakage or signs of fuel leakage are present	A
   No fuel leakage or signs of fuel leakage	B

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.
   • If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 74 and perform fuel system troubleshooting (steps 75 to 79).

B → See step   138 

A → REPAIR OR REPLACE FUEL LINE 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select [Engine Speed] of the Data List.
4. Start the engine.
5. While running the engine, read the [Engine Speed] value.

   Standard

   A value that matches the actual engine speed is constantly output.

   HINT: 

   • Check the engine speed using a line graph.
   • If the engine cannot be started, check the engine speed while cranking the engine.
   • If the engine speed is 0 rpm, the crankshaft position sensor may have an open or short circuit.

NG → See step   139 

OK: Go to next step 

Fig 8: Identifying Front View Of Wire Harness Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the injector connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Cylinder	Tester Connection	Switch Condition	Specified Condition
   No. 1	E1-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 2	n1-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 3	E2-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 4	n2-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 5	E3-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 6	n3-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 7	E4-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 8	n4-2 - Ground	Engine switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel injector assembly)

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → See step   176 

OK: Go to next step 

1. Disconnect the injector connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Cylinder	Tester Connection	Condition	Specified Condition
   No. 1	E1-1 - Ground	Always	10 kΩ or higher
   	E1-1 - C31-6 (#10)	Always	Below 1 Ω
   No. 2	n1-1 - Ground	Always	10 kΩ or higher
   	n1-1 - C31-1 (#20)	Always	Below 1 Ω
   No. 3	E2-1 - Ground	Always	10 kΩ or higher
   	E2-1 - C31-7 (#30)	Always	Below 1 Ω
   No. 4	n2-1 - Ground	Always	10 kΩ or higher
   	n2-1 - C31-2 (#40)	Always	Below 1 Ω
   No. 5	E3-1 - Ground	Always	10 kΩ or higher
   	E3-1 - C31-8 (#50)	Always	Below 1 Ω
   No. 6	n3-1 - Ground	Always	10 kΩ or higher
   	n3-1 - C31-3 (#60)	Always	Below 1 Ω
   No. 7	E4-1 - Ground	Always	10 kΩ or higher
   	E4-1 - C31-9 (#70)	Always	Below 1 Ω
   No. 8	n4-1 - Ground	Always	10 kΩ or higher
   	n4-1 - C31-4 (#80)	Always	Below 1 Ω

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   140 

1. Connect the Techstream to the DLC3.
2. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

   HINT: 

   The A/C switch and all accessory switches should be off, and the shift lever should be in N or P.

3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF.
5. Check MAF in the Data List during idling.

   Standard

   3.4 to 6.2 gm/s.

NG → See step   59 

OK: Go to next step 

1. Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.]. Refer to ON-VEHICLE INSPECTION - Step 3 .

   HINT: 

   • If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake manifold increases and the air suction noise becomes louder.
   • If Short FT and Long FT are largely different from the normal values (differ by more than 15%) when idling (intake air volume is small) and almost the same as the normal values when racing the engine (for example, when maintaining a speed of 3000 rpm) (intake air volume is high), air leakage may be present.

   Standard

   There is no air leakage.

NG → REPAIR OR REPLACE INTAKE SYSTEM 

OK: Go to next step 

1. Disconnect the throttle body connector.

   HINT: 

   When the connector is disconnected, the vehicle enters fail-safe mode and the throttle valve opening angle is 4 to 7°.

2. Crank the engine and check that it starts.

   Result

   Result	Proceed to
   Engine starts	A
   Engine does not start	B

3. Connect the throttle body connector.

   HINT: 

   When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs. Refer to DTC CHECK / CLEAR .

B → See step   55 

A: Go to next step 

1. Check if carbon is in the air flow passage.

   Standard

   No carbon present.

NG → REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the Techstream on.
3. Warm up the engine.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2).

   HINT: 

   When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.

5. Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream.

   OK

   Tester Operation	Specified Condition
   OFF	Normal engine speed
   ON	Soon after OCV switched from OFF to ON, engine idles roughly or stalls

   RESULT
   
   

   Result	Proceed to
   NG	A
   OK	B

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
   • If the camshaft timing oil control valve assembly is stuck ON, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall.

B → See step   56 

A → See step   141 

1. Connect the Techstream to the DLC3.
2. Turn the Techstream on.
3. Warm up the engine.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank1) or Control the VVT Exhaust Linear (Bank2).

   HINT: 

   When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.

5. Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream.

   OK*1

   Tester Operation	Specified Condition
   0%	Normal engine speed
   100%	Engine idles roughly or stalls

   HINT: 

   • *1: From step 74, perform intake system troubleshooting (steps 86 to 88). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 89 to 96).
   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
   • If the camshaft timing oil control valve assembly is stuck ON, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall.

NG → See step   179 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

   HINT: 

   • When performing the Active Test, make sure the shift lever is in P or N.
   • The A/C switch and all accessory switches should be off.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position.
5. Confirm the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test.

   HINT: 

   • Do not leave the EGR valve open for 10 seconds or more during the Active Test.
   • Be sure to return the EGR valve to step 0 when the Active Test is completed.

   OK

   MAP and idling condition change in response to EGR step position as follows.

   Standard

   -	EGR Step Position (Active Test)
   	0 Steps	0 to 30 Steps
   Idling condition	Steady idling	Idling changes from steady to rough idling or engine stall
   MAP (Data List)	20 to 40 kPa (150 to 300 mmHg)	MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed

OK → See step   74 

NG → See step   58 

1. Remove the EGR valve assembly. Refer to REMOVAL .
2. Check if the EGR valve assembly is stuck open.

   OK

   EGR valve is tightly closed.

OK → See step   74 

NG → See step   180 

1. Disconnect the MAF meter connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C27-3 (VG) - C29-14 (VG)	Always	Below 1 Ω
   C27-2 (E2G) - C29-13 (E2G)	Always	Below 1 Ω
   C27-3 (VG) or C29-14 - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.
   • If the wire harness is normal, after replacing the mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 74 and perform intake system troubleshooting (steps 86 to 88). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 89 to 96).

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   142 

1. Inspect the engine coolant temperature sensor. Refer to INSPECTION .

   HINT: 

   If the engine coolant temperature sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

NG → See step   143 

OK: Go to next step 

1. Disconnect the ECT sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C18-2 - C30-17 (THW)	Always	Below 1 Ω
   C18-1 - C29-7 (E2)	Always	Below 1 Ω
   C18-2 or C30-17 (THW) - Body ground	Always	10 kΩ or higher
   C18-1 or C29-7 (E2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.
   • If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

   HINT: 

   The A/C switch and all accessory switches should be off, and the shift lever should be in N or P.

3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF.
5. Check MAF in the Data List during idling.

   Standard

   3.4 to 6.2 gm/s.

   HINT: 

   If the mass air flow meter is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

NG → See step   144 

OK: Go to next step 

1. Disconnect the MAF meter connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C27-3 (VG) - C29-14 (VG)	Always	Below 1 Ω
   C27-2 (E2G) - C29-13 (E2G)	Always	Below 1 Ω
   C27-3 (VG) or C29-14 (VG) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.
   • If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select and read [Long FT] and [Atmosphere Pressure] in the Data List.

   Result

   Data List Item	Result	Suspected Area	Proceed to
   Long FT	+25% or more or less than -25%	Air fuel ratio sensor Heated oxygen sensor Mass air flow meter Fuel injector ECM	A
   Atmosphere Pressure	80 kPa or less (when altitude is 0 m)
   Both Data List items listed above	Values are other than above	-	B

B → See step   68 

A: Go to next step 

1. Remove the EFI NO. 1 and ETCS fuses from the engine room relay block.
2. After 60 seconds or more elapse, install the EFI NO. 1 and ETCS fuses.
3. Check if the engine can be started.
   RESULT
   
   

   Result	Proceed to
   Engine can be started	A
   Engine cannot be started	B

B → See step   68 

A: Go to next step 

Fig 9: Inspecting Air Fuel Ratio Sensor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel System Status #1 and Fuel System Status #2.
5. Confirm that Fuel System Status #1 and Fuel System Status #2 are both CL.
6. Enter the following menus: Powertrain / Engine and ECT / Data List / AF Lambda B1S1 and AF Lambda B2S1.
7. Confirm that AF Lambda B1S1 and AF Lambda B2S1 are both within the range of 0.95 to 1.05 when idling.
8. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume.
9. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

   Standard

   Tester Display	Injection Volume	Specified Condition
   AFS Voltage B1S1 AFS Voltage B2S1	+25%	Air fuel ratio sensor output voltage is below 3.1 V
   	-12.5%	Air fuel ratio sensor output voltage is higher than 3.4 V

   TEXT IN ILLUSTRATION
   
   

   *a	Injection Volume
   *b	A/F Sensor Output Voltage
   *c	HO2 Sensor Output Voltage

   RESULT
   
   

   Result	Proceed to
   Normal	A
   Abnormal	B

   HINT: 

   • The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.
   • If the air fuel ratio sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

B → See step   145 

A: Go to next step 

1. Check if the idling speed is stable after starting the engine.

   OK

   Speed is stable.

   HINT: 

   After replacing the fuel injector or mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

NG → See step   147 

OK → See step   146 

1. Inspect the fuel pressure. Refer to ON-VEHICLE INSPECTION - Step 2 .

NG → See step   73 

OK: Go to next step 

1. Inspect the spark plugs. Refer to ON-VEHICLE INSPECTION - Step 3 .
   RESULT
   
   

   Result	Proceed to
   All cylinders are normal	A
   One cylinder is abnormal*1	B
   All cylinders are abnormal*2, *3	C

   HINT: 

   • *1: If one cylinder is abnormal, replace the spark plug of that cylinder and inspect the ignition and fuel system for that cylinder. After performing repairs, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.
   • *2: If all cylinders are abnormal, replace the spark plugs of all cylinders and check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.
   • *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly.

B → See step   148 

C → See step   149 

A: Go to next step 

1. Confirm the conditions present when the malfunction occurred based on the customer problem analysis.

   Result

   Problem Symptom	Suspected Area	Proceed to
   When the engine is stopped and a long time has passed, engine starting trouble occurs*1	Pressure regulator is stuck open	A
   When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2	Fuel injector leak	B
   When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3	Failure to maintain fuel pressure by pressure regulator	A
   Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs	-	C*4

   HINT: 

   *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *2: Fuel may be leaking from a fuel injector.

   *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *4: From step 74, perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

B → See step   72 

C → See step   74 

A: Go to next step 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION - Step 2 .

1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.

   Result

   Result	Proceed to
   147 kPa (1.5 kgf/cm2) or higher (5 minutes after stopping the engine)	A*1
   Less than 147 kPa (1.5 kgf/cm2) (5 minutes after stopping the engine)	B

   HINT: 

   • If the engine cannot be started, check the fuel pressure after cranking the engine.
   • *1: From step 74, perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

A → See step   74 

B → See step   150 

1. Clean the inside of the surge tank with compressed air.
2. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.

   Result

   Result	Proceed to
   400 ppm or higher	A
   Less than 400 ppm	B*1

   HINT: 

   • If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem.
   • *1: From step 74, perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

B → See step   74 

A → See step   151 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
4. When performing the Active Test, check for fuel leakage from the fuel pipes.
   RESULT
   
   

   Result	Proceed to
   Fuel leakage or signs of fuel leakage are present	A
   No fuel leakage or signs of fuel leakage	B

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.
   • If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

B → See step   152 

A → REPAIR OR REPLACE FUEL LINE 

1. If the malfunction could not be identified during the inspection in steps 38, 39, 40 and 47, perform fuel system troubleshooting C (steps 75 to 79).

   Result

   Performed Step	Troubleshooting by System	Procedure	Proceed to
   Steps 38, 39, 40 and 47	Fuel system troubleshooting C	75 to 79	A

2. If the malfunction could not be identified during the inspection in step 45, perform ignition system troubleshooting (steps 80 to 85).

   Result

   Performed Step	Troubleshooting by System	Procedure	Proceed to
   Step 45	Ignition system troubleshooting	80 to 85	B

3. If the malfunction could not be identified during the inspection in steps 55, 56, 57, 58 and 59, perform intake air system troubleshooting (steps 86 to 88). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 89 to 96).

   Result

   Performed Step	Troubleshooting by System	Procedure	Proceed to
   Step 55, 56, 57, 58, 59	Intake air system troubleshooting	86 to 88	C
   	Fuel system troubleshooting A	89 to 96

4. If the malfunction could not be identified during the inspection in steps 60, 61, 62, 63, 66, 67, 69, 70, 71, 72 and 73, perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake air system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

   Result

   Performed Step	Troubleshooting by System	Procedure	Proceed to
   Steps 60, 61, 62, 63, 66, 67, 69, 70, 71, 72 and 73	Fuel system troubleshooting A	97 to 104	D
   	Fuel system troubleshooting B	105 to 107
   	Intake air system troubleshooting	108 to 110
   	Ignition system troubleshooting	111 to 116

B → See step   80 

C → See step   86 

D → See step   97 

A: Go to next step 

1. Inspect the fuel injectors. Refer to INSPECTION .

NG → See step   177 

OK: Go to next step 

Fig 10: Identifying Front View Of Wire Harness Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the injector connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Cylinder	Tester Connection	Switch Condition	Specified Condition
   No. 1	E1-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 2	n1-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 3	E2-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 4	n2-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 5	E3-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 6	n3-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 7	E4-2 - Ground	Engine switch on (IG)	11 to 14 V
   No. 8	n4-2 - Ground	Engine switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel injector assembly)

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → See step   178 

OK: Go to next step 

1. Disconnect the injector connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Cylinder	Tester Connection	Condition	Specified Condition
   No. 1	E1-1 - Ground	Always	10 kΩ or higher
   	E1-1 - C31-6 (#10)	Always	Below 1 Ω
   No. 2	n1-1 - Ground	Always	10 kΩ or higher
   	n1-1 - C31-1 (#20)	Always	Below 1 Ω
   No. 3	E2-1 - Ground	Always	10 kΩ or higher
   	E2-1 - C31-7 (#30)	Always	Below 1 Ω
   No. 4	n2-1 - Ground	Always	10 kΩ or higher
   	n2-1 - C31-2 (#40)	Always	Below 1 Ω
   No. 5	E3-1 - Ground	Always	10 kΩ or higher
   	E3-1 - C31-8 (#50)	Always	Below 1 Ω
   No. 6	n3-1 - Ground	Always	10 kΩ or higher
   	n3-1 - C31-3 (#60)	Always	Below 1 Ω
   No. 7	E4-1 - Ground	Always	10 kΩ or higher
   	E4-1 - C31-9 (#70)	Always	Below 1 Ω
   No. 8	n4-1 - Ground	Always	10 kΩ or higher
   	n4-1 - C31-4 (#80)	Always	Below 1 Ω

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   79 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Replace the camshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   153 

OK → END (CAMSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Check the tightening and installation condition of the crankshaft position sensor bolt.
2. Check the connection of the crankshaft position sensor connector.

   OK

   Sensor is installed correctly.

NG → See step   154 

OK: Go to next step 

1. Check the tightening and installation condition of the camshaft position sensor bolt.
2. Check the connection of the camshaft position sensor connector.

   OK

   Sensor is installed correctly.

NG → See step   155 

OK: Go to next step 

1. Disconnect the crankshaft position sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C42-1 (NE+) - C28-6 (NE+)	Always	Below 1 Ω
   C42-2 (NE-) - C28-5 (NE-)	Always	Below 1 Ω
   C42-3 (VC) - C28-16 (VCV2)	Always	Below 1 Ω
   C42-1 (NE+) or C28-6 (NE+) - Body ground	Always	10 kΩ or higher
   C42-2 (NE-) or C28-5 (NE-) - Body ground	Always	10 kΩ or higher
   C42-3 (VC) or C28-16 (VCV2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the camshaft position sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C41-1 (G2) - C28-9 (G2)	Always	Below 1 Ω
   C41-2 (G-) - C28-10 (G2-)	Always	Below 1 Ω
   C41-3 (VC) - C28-16 (VCV2)	Always	Below 1 Ω
   C41-1 (G2) or C28-9 (G2) - Body ground	Always	10 kΩ or higher
   C41-2 (G-) or C28-10 (G2-) - Body ground	Always	10 kΩ or higher
   C41-3 (VC) or C28-16 (VCV2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   85 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Replace the camshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   156 

OK → END (CAMSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches should be off
4. Using the Techstream, select and read [ISC Learning Value] in the Data List.

   Result

   Data List Item	Result	Suspected Area	Proceed to
   ISC Learning Value	(engine displacement (liters) x 0.9) or more	Valve timing Compression	A
   	Less than (engine displacement (liters) x 0.9)	-	B

B → See step   88 

A: Go to next step 

1. Inspect the compression. Refer to ON-VEHICLE INSPECTION - Step 3 .

NG → REPAIR OR REPLACE ENGINE ASSEMBLY 

OK → CHECK VALVE TIMING 

1. Inspect the engine coolant temperature sensor. Refer to INSPECTION .

NG → See step   157 

OK: Go to next step 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION - Step 2 .

1. Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine.

   Result

   Vehicle State	Specified Condition
   Cranking engine	304 to 343 kPa (3.1 to 3.5 kgf/cm2 )
   5 minutes after stopping engine	147 kPa (1.5 kgf/cm2 ) or more

NG → See step   95 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select and read [Long FT] in the Data List.

   Result

   Data List Item	Result	Suspected Area	Proceed to
   Long FT	-15 to +15%	Wire harness or connector Fuel	A
   	+15% or more, or less than -15%	Fuel injector	B

B → See step   158 

A: Go to next step 

1. Check if the idling speed after starting the engine is currently stable and has always been stable in the past.

   Result

   Problem Symptom	Suspected Area	Proceed to
   Current unstable idling speed or history of unstable idling speed	Crankshaft position sensor system	A
   All current and past idling speeds are stable	Fuel	B

   HINT: 

   Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle.

B → REPLACE FUEL 

A: Go to next step 

1. Check the tightening and installation condition of the crankshaft position sensor bolt.
2. Check the connection of the crankshaft position sensor connector.

   OK

   Sensor is installed correctly.

NG → See step   159 

OK: Go to next step 

1. Disconnect the crankshaft position sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C42-1 (NE+) - C28-6 (NE+)	Always	Below 1 Ω
   C42-2 (NE-) - C28-5 (NE-)	Always	Below 1 Ω
   C42-3 (VC) - C28-16 (VCV2)	Always	Below 1 Ω
   C42-1 (NE+) or C28-6 (NE+) - Body ground	Always	10 kΩ or higher
   C42-2 (NE-) or C28-5 (NE-) - Body ground	Always	10 kΩ or higher
   C42-3 (VC) or C28-16 (VCV2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   160 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
4. When performing the Active Test, check for fuel leakage from the fuel pipes.
   RESULT
   
   

   Result	Proceed to
   Fuel leakage or signs of fuel leakage are present	A
   No fuel leakage or signs of fuel leakage	B

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning.
   • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.

B → See step   96 

A → REPAIR OR REPLACE FUEL LINE 

1. Inspect the fuel pump. Refer to INSPECTION .

NG → See step   164 

OK → See step   161 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION - Step 2 .

1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.

   Result

   Result	Proceed to
   147 kPa (1.5 kgf/cm2 ) or higher (5 minutes after stopping the engine)	A
   Less than 147 kPa (1.5 kgf/cm2 ) (5 minutes after stopping the engine)	B

B → See step   103 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select and read [Long FT] in the Data List.

   Result

   Data List Item	Result	Suspected Area	Proceed to
   Long FT	-15 to +15%	Wire harness or connector Fuel	A
   	+15% or more, or less than -15%	Fuel injector	B

B → See step   171 

A: Go to next step 

1. Check if the idling speed after starting the engine is currently stable and has always been stable in the past.
   RESULT
   
   

   Problem Symptom	Suspected Area	Proceed to
   Current unstable idling speed or history of unstable idling speed	Crankshaft position sensor system	A
   All current and past idling speeds are stable	Fuel	B

   HINT: 

   Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle.

B → REPLACE FUEL 

A: Go to next step 

1. Check the tightening and installation condition of the crankshaft position sensor bolt.
2. Check the connection of the crankshaft position sensor connector.

   OK

   Sensor is installed correctly.

NG → See step   162 

OK: Go to next step 

1. Disconnect the crankshaft position sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C42-1 (NE+) - C28-6 (NE+)	Always	Below 1 Ω
   C42-2 (NE-) - C28-5 (NE-)	Always	Below 1 Ω
   C42-3 (VC) - C28-16 (VCV2)	Always	Below 1 Ω
   C42-1 (NE+) or C28-6 (NE+) - Body ground	Always	10 kΩ or higher
   C42-2 (NE-) or C28-5 (NE-) - Body ground	Always	10 kΩ or higher
   C42-3 (VC) or C28-16 (VCV2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   163 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
4. When performing the Active Test, check for fuel leakage from the fuel pipes.
   RESULT
   
   

   Result	Proceed to
   Fuel leakage or signs of fuel leakage are present	A
   No fuel leakage or signs of fuel leakage	B

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning.
   • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.

B → See step   104 

A → REPAIR OR REPLACE FUEL LINE 

1. Inspect the fuel pump. Refer to INSPECTION .

NG → See step   174 

OK: Go to next step 

1. Disconnect the vacuum hose (on the canister side) of the purge VSV.
   Fig 11: Identifying Canister Purge VSV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Start the engine.
3. Idle the engine.
4. Disconnect the connector of the purge VSV.
5. Check if air flows through the purge VSV.

   Standard

   Air does not flow

6. Connect the connector of the purge VSV.
7. Connect the vacuum hose of the purge VSV.

   HINT: 

   When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs. Refer to DTC CHECK / CLEAR .

NG → See step   165 

OK: Go to next step 

1. Clean the inside of the surge tank with compressed air.
2. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.

   Result

   Result	Proceed to
   400 ppm or higher	A
   Less than 400 ppm	B

   HINT: 

   If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem.

B → See step   107 

A → See step   166 

1. Check if carbon is on the intake valves.

   Result

   Result	Proceed to
   Carbon present	A
   No carbon present	B

B → See step   108 

A → CLEAN INTAKE VALVE 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.
4. Using the Techstream, select and read [ISC Learning Value] in the Data List.

   Result

   Data List Item	Result	Suspected Area	Proceed to
   ISC Learning Value	(engine displacement (liters) x 0.9) or more	Valve timing Compression	A
   	Less than (engine displacement (liters) x 0.9)	-	B

B → See step   110 

A: Go to next step 

1. Inspect the compression. Refer to ON-VEHICLE INSPECTION - Step 3 .

NG → REPAIR OR REPLACE ENGINE ASSEMBLY 

OK → See step   167 

1. Inspect the engine coolant temperature sensor. Refer to INSPECTION .

NG → See step   168 

OK: Go to next step 

1. Check the tightening and installation condition of the crankshaft position sensor bolt.
2. Check the connection of the crankshaft position sensor connector.

   OK

   Sensor is installed correctly.

NG → See step   169 

OK: Go to next step 

1. Check the tightening and installation condition of the camshaft position sensor bolt.
2. Check the connection of the camshaft position sensor connector.

   OK

   Sensor is installed correctly.

NG → See step   170 

OK: Go to next step 

1. Disconnect the crankshaft position sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C42-1 (NE+) - C28-6 (NE+)	Always	Below 1 Ω
   C42-2 (NE-) - C28-5 (NE-)	Always	Below 1 Ω
   C42-3 (VC) - C28-16 (VCV2)	Always	Below 1 Ω
   C42-1 (NE+) or C28-6 (NE+) - Body ground	Always	10 kΩ or higher
   C42-2 (NE-) or C28-5 (NE-) - Body ground	Always	10 kΩ or higher
   C42-3 (VC) or C28-16 (VCV2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the camshaft position sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C41-1 (G2) - C28-9 (G2)	Always	Below 1 Ω
   C41-2 (G-) - C28-10 (G2-)	Always	Below 1 Ω
   C41-3 (VC) - C28-16 (VCV2)	Always	Below 1 Ω
   C41-1 (G2) or C28-9 (G2) - Body ground	Always	10 kΩ or higher
   C41-2 (G-) or C28-10 (G2-) - Body ground	Always	10 kΩ or higher
   C41-3 (VC) or C28-16 (VCV2) - Body ground	Always	10 kΩ or higher

   HINT: 

   • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
   • Make sure there is not an excessive amount of force applied to the wire harness.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   116 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Replace the camshaft position sensor. Refer to REMOVAL .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   175 

OK → END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)