Lack of Power [12/2021 - ]: Procedure

1. Interview the customer for details about the conditions when experiencing the lack of power.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Perform a road test.
2. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTC is output	B

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2021 - ] 

Result: 

A 

See step  3

1. Confirm if any data relating to the problem symptoms exist in the Vehicle Control History.

   Powertrain > Engine > Utility 

   Tester Display
   Vehicle Control History

   HINT: 

   • It is also possible to display Vehicle Control History during the Health Check, if "Store All Data" is selected.
   • The vehicle condition when the problem symptoms occurred can be determined by confirming the Vehicle Control History Freeze Frame Data.
   • As the Vehicle Control History data may be overwritten whenever the trigger conditions are met, make sure to save the Vehicle Control History data before performing any inspections.
   • Using information from the customer about when the problem symptom occurred, find the Freeze Frame Data with the appropriate Key Cycle, Total Distance Traveled, etc., to find vehicle history that may be related to the problem symptoms.
2. Check if the problem symptoms stated by the customer are currently occurring.

   HINT: 

   By using snapshot to store the Data List, the Data List items can be compared to the Vehicle Control History.

3. Read the Vehicle Control History Freeze Frame Data.

   Result

   Vehicle Control History	Vehicle Control History Freeze Frame Data	Proceed to
   Lack of Power is stored (Vehicle Control History Code: X0844)	Knock Correct Learn Value is less than 5 deg (CA)	A
   	Difference between Target Boost Pressure and Boost Pressure Sensor is 60 kPa [8.7 psi] or higher	B
   The malfunction is currently occurring and there is no Vehicle Control History related to the problem symptoms stated by the customer.		C
   The malfunction is not currently occurring and there is no Vehicle Control History related to the problem symptoms stated by the customer.		D

Result: 

A 

CONFIRM FUEL 

HINT: 

• Interview the customer to check if the malfunction is caused by the quality of the fuel being used.
• If the result of the customer problem analysis is that improper fuel was not used or the type of fuel used is unknown, suggest that the customer refuel the vehicle with a different brand of fuel and then check if the malfunction symptoms disappear.

Result: 

B 

See step  16

Result: 

D 

CHECK FOR INTERMITTENT PROBLEMS 

HINT: 

If the problem symptoms cannot be reproduced, refer to Check for Intermittent Problems, and try to reproduce the conditions when the problem symptoms occurred as stated by the customer.

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ]

Result: 

C 

See step  4

1. Check the malfunction condition.

   Result

   Result	Proceed to
   Other than below	A
   Lack of power during high-load driving	B

Result: 

B 

See step  23

Result: 

A 

See step  5

1. Read the value displayed on the GTS.

   Powertrain > Engine > Data List 

   Tester Display
   ISC F/B Learn Torque

   Result

   Result	Proceed to
   Less than 15 Nm	A
   Other than above	B

Result: 

B 

See step  14

Result: 

A 

See step  6

1. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
2. Idle the engine.
3. Read the value.

   Powertrain > Engine > Data List 

   Tester Display
   Knock Correct Learn Value

   Result

   Knock Correct Learn Value	Proceed to
   5 deg (CA) or higher	A
   Less than 5 deg (CA)	B

   HINT: 

   • If the value shown in the Data List is below 5 deg (CA), interview the customer to check if the malfunction is caused by the quality of the fuel being used.
   • If the result of the customer problem analysis is that improper fuel was not used or the type of fuel used is unknown, suggest that the customer refuel the vehicle with a different brand of fuel and then check if the malfunction symptoms disappear.

Result: 

B 

CONFIRM FUEL 

Result: 

A 

See step  7

1. Read the value displayed on the GTS.

   Powertrain > Engine > Data List 

   Tester Display
   Short FT B1S1
   Short FT B2S1
   Long FT B1S1
   Long FT B2S1

   Result

   Data List	Result	Proceed to
   Short FT B1S1 + Long FT B1S1	-20% or higher, or less than 20%	A
   Short FT B2S1 + Long FT B2S1
   Short FT B1S1 + Long FT B1S1	Other than above	B
   Short FT B2S1 + Long FT B2S1

   HINT: 

   • "Total FT Bank 1, Bank 2" is used to detect an abnormal air fuel ratio. As the value of "Total FT Bank 1, Bank 2" is corrected by the ECM before it is displayed in the Data List, the displayed value may not be equal to the sum of the measured "Short FT B1S1, B2S1" and "Long FT B1S1, B2S1".
   • An abnormally lean or rich tendency can be checked by reading the following Data List items: A/F Learn Value Idle Bank 1, Bank 2, A/F Learn Value Low Bank 1, Bank 2, A/F Learn Value Mid No. 1 Bank 1, Bank 2, A/F Learn Value Mid No. 2 Bank 1, Bank 2, A/F Learn Value High Bank 1, Bank 2, A/F Learn Value Idle (Port) Bank 1, Bank 2, A/F Learn Value Low (Port) Bank 1, Bank 2, A/F Learn Value Mid No. 1 (Port) Bank 1, Bank 2, A/F Learn Value Mid No. 2 (Port) Bank 1, Bank 2 and A/F Learn Value High (Port) Bank 1, Bank 2.
   • The following may cause a lean air fuel ratio (an operating range in which the air fuel ratio learned value correction is +20% or more):
     1. Decrease in fuel injector assembly injection volume
     2. Decrease in mass air flow meter sub-assembly output (due to existence of foreign matter)
     3. Air leaks in intake system after mass air flow meter sub-assembly
     4. Decrease in fuel pressure (at fuel filter, fuel pump assembly, fuel main valve assembly or fuel suction plate sub-assembly)
   • On vehicles which the learning value for each operating range can be checked, if the value of "A/F Learn Value High Bank 1, Bank 2" or "A/F Learn Value High (Port) Bank 1, Bank 2" only is corrected to the positive side, a malfunction in the fuel system (clogging of the fuel pump assembly or fuel filter) is suspected.
   • On vehicles which the learning value for each operating range can be checked, if the value of "A/F Learn Value Idle Bank 1, Bank 2", "A/F Learn Value Low Bank 1, Bank 2", "A/F Learn Value Idle (Port) Bank 1, Bank 2" or "A/F Learn Value Low (Port) Bank 1, Bank 2" only is corrected to the positive side, an air leak after the mass air flow meter sub-assembly is suspected.
   • If the air fuel ratio becomes lean only when the engine is running under a high load and at a high engine speed, clogging of the fuel filter is suspected.
   • The following may cause a rich air fuel ratio (an operating range in which the air fuel ratio learned value correction is -20% or less):
     1. Increase in the fuel injector assembly injection volume
     2. Purge VSV system

Result: 

B 

See step  19

Result: 

A 

See step  8

1. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
2. Accelerate to 80 km/h (50 mph) with the accelerator pedal fully depressed.
   NOTE:

   When performing the confirmation driving pattern, obey all speed limits and traffic laws.

   HINT: 

   • Perform the test drive at 500 m (1640 ft.) or lower elevation. Accurate evaluation may not be possible at high elevation.
3. Read the Data List while driving with the shift position in 2nd gear and an engine speed of 4000 rpm +/-100 rpm (40 to 60 km/h [25 to 37 mph]).

   Powertrain > Engine > Data List 

   Tester Display
   Boost Pressure Sensor

   HINT: 

   Compare Data List items "Wastegate Valve Position Bank1" and "Wastegate Valve Position Bank2" and if there is a difference in the values, it is possible that there is a malfunction in the waste gate valve system.

   Result

   GTS Display	Result	Proceed to
   Boost Pressure Sensor	Atmospheric pressure (kPa [psi]) x 1.2 or higher	A
   	Below atmospheric pressure (kPa [psi]) x 1.2	B

   HINT: 

   Example judgment threshold (atmospheric pressure (kPa [psi]) x 1.2)

   • 0 m (0 ft.) above sea level (atmospheric pressure 101.3 kPa [16.69 psi]): Threshold is 121.56 kPa [17.63 psi]
   • 1500 m (4920 ft.) above sea level (atmospheric pressure 86.3 kPa [12.51 psi]): Threshold is 103.56 kPa [15.02 psi]

Result: 

B 

See step  16

Result: 

A 

See step  9

1. Start the engine.

   HINT: 

   Reproduce the vehicle conditions when the malfunction occurred. (such as after the engine is warmed up or after a cold start).

2. According to the display on the GTS, perform the Active Test and check for a malfunctioning cylinder.

   Powertrain > Engine > Active Test 

   Active Test Display
   D-4S (Fuel Cut)

   Data List Display
   Injection Mode

   HINT: 

   • Perform fuel-cut of port injection and direct injection for each cylinder and check the change in the engine speed.
   • If the engine speed of a cylinder does not change while performing the Active Test, it can be determined that the cylinder is malfunctioning.
   • If the engine speed of all cylinders changes while performing the Active Test, it can be determined that multiple cylinders are malfunctioning.
   • A cylinder for which the Data List item "Misfire Count Cylinder #1 to #6" increases may be malfunctioning.

   Result

   Result	Proceed to
   One cylinder is malfunctioning	A
   Multiple or all cylinders are malfunctioning, or the malfunctioning cylinder cannot be determined	B

Result: 

B 

See step  19

Result: 

A 

See step  10

HINT: 

If the vehicle does not support the Active Test "Check the Cylinder Compression", measure the compression pressure. If the compression pressure is normal, go to step 11 (PERFORM ACTIVE TEST USING GTS (D-4S (INJECTION VOLUME))).

1. Warm up the engine.
2. Turn the ignition switch off.
3. Perform the Check the Cylinder Compression.

   Powertrain > Engine > Active Test 

   Active Test Display
   Check the Cylinder Compression

   Data List Display
   Engine Speed Cylinder #1
   Engine Speed Cylinder #2
   Engine Speed Cylinder #3
   Engine Speed Cylinder #4
   Engine Speed Cylinder #5
   Engine Speed Cylinder #6
   Average Engine Speed of All Cylinder

   HINT: 

   To display the entire Data List, press the pull down menu button next to Primary. Then select Compression.

4. Push the snapshot button to turn the snapshot function on.

   HINT: 

   Using the snapshot function, data can be recorded during the Active Test.

5. While the engine is not running, press the Active button to change Check the Cylinder Compression to "Start".

   HINT: 

   After performing the above procedure, Check the Cylinder Compression will start. Fuel injection for all cylinders is prohibited and each cylinder engine speed measurement enters standby mode.

6. Crank the engine for about 10 seconds.
7. Monitor the engine speed (Engine Speed Cylinder #1 to #6 and Average Engine Speed of All Cylinder) displayed on the GTS.
   NOTE:

   • Do not crank the engine continuously for 20 seconds or more.
   • If it is necessary to crank the engine again after Check the Cylinder Compression has been changed to "Start" and the engine has been cranked once, press Exit to return to the Active Test menu screen. Then change Check the Cylinder Compression to "Start" and crank the engine.
   • Make sure the battery is fully charged before performing this Active Test.
8. Stop cranking the engine, and then change "Check the Cylinder Compression" to "Stop" after the engine stops.
   NOTE:

   • If the Active Test is changed to "Stop" while the engine is being cranked, the engine will start.
   • When performing the Active Test, Vehicle Control History code X0810 (Engine Difficult to Start (Engine Starting Time Long)) may be stored.
   • After performing the Active Test, make sure to check and clear DTCs.
9. Push the snapshot button to turn the snapshot function off.
10. Select "Stored Data" on the GTS screen, select the recorded data and display the data as a graph.

    HINT: 

    If the data is not displayed as a graph, the change of the values cannot be observed.

11. Read the value.

    HINT: 

    • At first, the GTS will display extremely high cylinder engine speed values. After approximately 10 seconds of engine cranking, the engine speed measurement of each cylinder will change to the actual engine speed.
    • If the value of Data List item "Engine Speed Cylinder" of a cylinder is higher than other cylinders, the cylinder may be malfunctioning.
    • If the value of Data List item "Engine Speed Cylinder" is high for only one cylinder, compression loss is suspected.

    Result

    Result	Proceed to
    There is no variation in "Engine Speed Cylinder" (All cylinders display approximately the same value for "Engine Speed Cylinder")	A
    There is variation in "Engine Speed Cylinder" (Only one cylinder displays a value for "Engine Speed Cylinder" that differs considerably)	B

Result: 

B 

See step  17

Result: 

A 

See step  11

1. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off.
2. Idle the engine.
3. According to the display on the GTS, perform the Active Test and check the vehicle conditions when increasing and decreasing the fuel injection volume of port injection and direct injection.

   Powertrain > Engine > Active Test 

   Active Test Display
   D-4S (Injection Volume)

   Data List Display
   Injection Mode

   HINT: 

   • Increase and decrease the fuel injection volume of the port injection and direct injection simultaneously and check the vehicle condition.
   • Change the fuel injection volume between the minimum and maximum range of correction (e.g. -12.5% to 24.8%).

   Result

   Result	Proceed to
   Malfunction is still present even if the fuel injection volume is changed	A
   Malfunction disappears when the fuel injection volume is changed	B

Result: 

B 

See step  18

Result: 

A 

See step  12

1. Check the ignition system.

   HINT: 

   • Interchange the ignition coil assembly and spark plug of the malfunctioning cylinder with those of a known good cylinder and check if the malfunctioning cylinder returns to normal.
   • If the spark plug of the malfunctioning cylinder is abnormally wet with fuel even after the ignition coil assembly and spark plug are replaced, a leaking fuel injector assembly is suspected.

   Result

   Result	Proceed to
   The malfunctioning cylinder does not return to normal	A
   The malfunctioning cylinder returned to normal	B

Result: 

B 

See step  33

Result: 

A 

See step  13

1. Check the power source circuit, wire harness and connectors.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  33

1. Clean off any deposits from the inside of the throttle body with motor assembly.
2. Push open the throttle valve and wipe off any carbon from the valve and bore using a piece of cloth soaked in non-residue solvent.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Throttle Body with Motor Assembly	*2	Bore
   *3	Valve	-	-
   *a	Reference	*b	Throttle Body with Motor Assembly Cross-section Diagram
   *c	When valve fully opened	*d	Do not directly apply cleaner
   *e	Deposits	-	-

   NOTE:

   • Make sure that the cloth or your fingers do not get caught in the valve.
   • Make sure that foreign matter does not enter the throttle valve.
   • Do not directly apply non-residue solvent to the throttle body with motor assembly or wash the throttle body with motor assembly. Cleaning solvent may leak into the motor from the shaft and cause problems such as rust or valve movement problems.
   • If there is coating material on the edge of the valve, be careful not to remove it.

   HINT: 

   The illustrations are for reference only. Actual parts may differ.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  15

1. Perform "Inspection After Repair" after cleaning the throttle body with motor assembly.

   Refer to INITIALIZATION [12/2021 - ]

2. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
3. Allow the engine to idle for 3 minutes or more and confirm that the engine speed is within the specified range.

   HINT: 

   After cleaning the deposits from the throttle body with motor assembly, perform learning value reset and idle learning. If the engine is operated without performing learning again, the engine speed may increase.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  34

1. Perform a lack of power (turbocharger system) troubleshooting inspection.

   Refer to Lack of Power (Turbocharger System) [12/2021 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  34

1. Measure the cylinder compression pressure. If the compression pressure of a cylinder is low, inspect the engine assembly and repair or replace parts as necessary.

   Refer to PROCEDURE - Step 13

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  34

1. Replace the abnormal fuel injector assembly.

   HINT: 

   • If the air fuel ratio learned value is corrected to the positive side for all operating ranges due to low fuel injector assembly injection volume, replace the fuel injector assemblies of all cylinders.
   • Perform "Inspection After Repair" after replacing the fuel injector assembly.

     Refer to INITIALIZATION [12/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  34

1. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off.
2. According to the display on the GTS, read the Data List.

   Powertrain > Engine > Data List 

   Tester Display
   MAF Sensor Bank1
   MAF Sensor Bank2

   Result

   Result	Proceed to
   Idling (engine warmed up and shift lever in D): 1.8 to 3.0 gm/sec Engine speed 2000 rpm (without load): 5.0 to 25.0 gm/sec Engine speed 3000 rpm (without load): 6.5 to 30.0 gm/sec	A
   Other than above	B

Result: 

B 

See step  25

Result: 

A 

See step  20

1. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off.
2. Warm up the air fuel ratio sensors at an engine speed of 2500 rpm for 90 seconds.
3. Idle the engine.
4. According to the display on the GTS, perform the Active Test and check the vehicle conditions when increasing and decreasing the fuel injection volume of port injection and direct injection.

   Powertrain > Engine > Active Test 

   Active Test Display
   D-4S (Injection Volume)

   Data List Display
   Injection Mode
   A/F (O2) Sensor Current B1S1
   A/F (O2) Sensor Current B2S1
   A/F (O2) Sensor Current B1S2
   A/F (O2) Sensor Current B2S2

   NOTE:

   • The air fuel ratio sensor (sensor 1) has an output delay of a few seconds and the air fuel ratio sensor (sensor 2) has a maximum output delay of approximately 20 seconds.
   • Read the output current immediately after warming up the air fuel ratio sensors to avoid an inaccurate reading due to a sensor cooling.

   HINT: 

   • Increase and decrease the fuel injection volume of the port injection and direct injection simultaneously and check the vehicle condition.
   • Change the fuel injection volume between -12 to 12%.

   Standard

   GTS Display (Sensor)	Injection Volume	Current
   A/F (O2) Sensor Current B1S1 A/F (O2) Sensor Current B1S1 (Air fuel ratio (sensor 1))	12%	Below -0.075 mA
   	-12%	More than 0.037 mA
   A/F (O2) Sensor Current B1S2 A/F (O2) Sensor Current B2S2 (Air fuel ratio (sensor 2))	12%	Below -0.86 mA
   	-12%	More than 0.33 mA

   Result

   Result	Proceed to
   Output current values are abnormal	A
   Malfunction disappears when fuel injection volume is increased	B
   Malfunction is still present when fuel injection volume is increased, even if output current values are normal	C

Result: 

B 

See step  22

Result: 

C 

See step  27

Result: 

A 

See step  21

1. Replace the air fuel ratio sensor (sensor 1).

   Refer to REMOVAL [12/2021 - ]

   HINT: 

   Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).

   Refer to INITIALIZATION [12/2021 - ]

2. Replace the air fuel ratio sensor (sensor 2).

   Refer to REMOVAL [12/2021 - ]

   HINT: 

   Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 2).

   Refer to INITIALIZATION [12/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  34

1. Replace the fuel injector assemblies of all cylinders.

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel injector assembly.

   Refer to INITIALIZATION [12/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  34

1. Clear the DTCs.

   Powertrain > Engine > Clear DTCs 

2. Turn the ignition switch off and wait for at least 30 seconds.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  24

1. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
2. Turn the ignition switch off and wait for at least 30 seconds.
3. Start the engine and wait 1 minute or more.

   HINT: 

   At this time, waste gate valve and air by-pass valve active detection is performed to check for malfunctions in the waste gate valve and air by-pass valve system.

4. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTC is not output	A
   DTCs are output	B

Result: 

A 

See step  5

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2021 - ] 

1. Check for air leaks or blockage in the intake system components. If a connection problem or foreign matter is found, repair the connection or remove the foreign matter.

   HINT: 

   • If there is foreign matter in the intake system components, remove it before proceeding to the next step.
   • If there is no foreign matter in the intake system components, check for foreign matter in the mass air flow meter sub-assembly. If there is foreign matter in the mass air flow meter sub-assembly, remove it.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  26

1. Check that there are no blockages and no exhaust gas is leaking from the exhaust pipe joint and installation area of each sensor. If there are any malfunctions, repair or replace the parts.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  33

1. When performing the Active Test, check for an operating sound from the fuel pump assembly (for low pressure side).

   Powertrain > Engine > Active Test 

   Tester Display
   Activate the Circuit Relay (Brushless)

   OK

   Activate the Circuit Relay (Brushless)	Specified Condition
   ON	Operating sound heard
   OFF	Operating sound not heard

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  35

Result: 

OK 

See step  28

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

   Refer to ON-VEHICLE INSPECTION [12/2021 - ]

   Standard

   Vehicle State	Specified Condition
   Cranking engine	196 to 833 kPa (2.0 to 8.5 kgf/cm2 , 28 to 121 psi)
   5 minutes after stopping engine	98 kPa (1.0 kgf/cm2 , 14 psi) or higher

   HINT: 

   • If there is foreign matter such as iron particles on the fuel pump assembly (for low pressure side), remove it.
   • Make sure that there are no leaks from the fuel lines, signs of fuel leakage or fuel odors.
   • If the air fuel ratio becomes lean only when the engine is running under a high load and at a high engine speed, clogging of the fuel filter is suspected.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  30

Result: 

OK 

See step  29

1. Inspect the following fuel pump assembly (for low pressure side) related parts:
   • Fuel pump assembly (for low pressure side)
   • Fuel suction plate sub-assembly
   • Fuel main valve assembly
   • Fuel lines and connecting parts
   • Fuel filter

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  33

1. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off.
2. According to the display on the GTS, read the Data List.

   Powertrain > Engine > Data List 

   Tester Display
   Fuel Pressure (High)
   Injection Mode

   Standard

   GTS Display	Condition	Specified Condition
   Fuel Pressure (High)	Shift position: P A/C: Off Engine warmed up Engine Speed: 3000 rpm Injection Mode: Direct	2800 to 20000 kPag

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  33

Result: 

OK 

See step  31

1. According to the display on the GTS, read the Data List.

   Powertrain > Engine > Data List 

   Tester Display
   Fuel Cut History 1
   Fuel Cut History 2
   Fuel Cut History 3
   Fuel Cut History 4

   Result

   Result	Proceed to
   Other than below	A
   The "distance calculated by subtracting the driving distance at the time of the malfunction from the current driving distance" and "distance calculated by subtracting the driving distance of Fuel Cut History 1 to 4 in the Data List from the driving distance of Distance for Control in the Data List" match.*1	B

   HINT: 

   *1: The Data List fuel cut operation history records the driving distance when the strong knocking repeated prevention control (engine protection) function is performed. Performing initialization of the GTS "Heavy Knock History" causes the Data List item "Fuel Cut History 1 to 4" driving distance to be reset to 0 km.

   If "distance calculated by subtracting the driving distance at the time of the malfunction from the current driving distance" and "distance calculated by subtracting the driving distance of Fuel Cut History 1 to 4 from the driving distance of Distance for Control in the Data List" match, explain to the customer that this is the normal control for the repeated prevention control (engine protection).

Result: 

B 

END 

Result: 

A 

See step  32

1. Inspect other related components.

   HINT: 

   If the malfunctioning part could not be determined by performing the preceding inspections, one of the following malfunctions is suspected.

   • Deposits in the intake manifold or on an intake valve
   • Delay in fuel supply due to adherence of the fuel to the deposits

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  33

1. Repair or replace the malfunctioning part.
2. Perform "Inspection After Repair" after repairing or replacing the malfunctioning part.

   Refer to INITIALIZATION [12/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  34

1. Check that the engine has returned to normal.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END 

1. Inspect the fuel pump control system.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  33