Inspection Procedure

HINT:

• The following troubleshooting flowchart is based on the premise that the engine is cranked normally. If the engine will not crank, proceed to the PROBLEM SYMPTOMS TABLE
• Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK IF VEHICLE IS EQUIPPED WITH SMART ENTRY AND START SYSTEM 

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   Without SMART ENTRY AND START SYSTEM	A
   With SMART ENTRY AND START SYSTEM	B

   B:  Go to step  11

   A: Go to Next Step 

2. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch on (IG) and turn the tester on.
   3. Select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
   4. Read the value displayed on the tester when the ignition switch is turned on (IG) and when the engine is started.

      OK 

      STARTER SIGNAL SPECIFICATION
      
      

      Ignition Switch	Starter Signal
      ON (IG)	OFF
      Engine start	ON

   OK: CHECK FOR INTERMITTENT PROBLEMS 

   NG: Go to Next Step 

3. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
   1. Disconnect the PNP switch connector.
   2. Measure the resistance when the transaxle gear selector lever is moved to each position.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Gear Selector Lever Position	Tester Connection	Specified Condition
      P	2 - 6, 4 - 5	Below 1 Ω
      R	1 - 2
      N	2 - 9, 4 - 5
      D	2 - 7
      2	2 - 3
      L	2 - 8

   3. Reconnect the PNP switch connector.
   Fig 1: Identifying PNP Switch Connector Terminals

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   OK:  Go to step  6

   NG: Go to Next Step 

4. REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
5. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch on (IG) and turn the tester on.
   3. Select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
   4. Read the value displayed on the tester when the ignition switch is turned on (IG) and when the engine is started.

      OK 

      STARTER SIGNAL SPECIFICATION
      
      

      Ignition Switch	Starter Signal
      ON (IG)	OFF
      Engine start	ON

   OK: SYSTEM OK 

   NG: Go to Next Step 

6. INSPECT IGNITION SWITCH ASSEMBLY 
   1. Disconnect the ignition switch connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Ignition Switch	Specified Condition
      All Terminals	LOCK	10 kΩ or higher
      2 - 3	ACC	Below 1 Ω
      2 - 3 - 4, 6 - 7	ON
      1 - 2 - 4, 6 - 7 - 8	START

      Fig 2: Identifying Ignition Switch Connector Terminals

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   3. Reconnect the ignition switch connector.

   OK:  Go to step  8

   NG: Go to Next Step 

7. REPLACE IGNITION SWITCH ASSEMBLY 
8. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch on (IG) and turn the tester on.
   3. Select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
   4. Read the value displayed on the tester when the ignition switch is turned on (IG) and when the engine is started.

      OK 

      STARTER SIGNAL SPECIFICATION
      
      

      Ignition Switch	Starter Signal
      ON (IG)	OFF
      Engine start	ON

   OK: SYSTEM OK 

   NG: Go to Next Step 

9. REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY CIRCUIT) 
10. CHECK WHETHER DTC OUTPUT RECURS 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the ignition switch on (IG) and turn the tester on.
    3. Clear the DTCs (See DTC CHECK / CLEAR ).
    4. Drive the vehicle at more than 20 km/h (12.4 mph) for over 20 seconds.
    5. Select the following menu items: Powertrain / Engine and ECT / DTC.
    6. Read DTCs.

       Result 

       RESULT CHART
       
       

       Display (DTC Output)	Proceed to
       P0617	A
       No DTC	B

    B: SYSTEM OK 

    A: REPLACE ECM 

11. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the ignition switch on (IG) and turn the tester on.
    3. Select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
    4. Read the value displayed on the tester when the ignition switch is turned on (IG) and when the engine is started.

       OK 

       STARTER SIGNAL SPECIFICATION
       
       

       Ignition Switch	Starter Signal
       ON (IG)	OFF
       Ignition Switch	Starter Signal
       Engine start	ON

       OK: REPLACE ECM 

       NG: Go to Next Step 

12. INSPECT PARK/NEUTRAL POSITION SWITCH 
    1. Disconnect the PNP switch connector.
    2. Measure the resistance when the transaxle gear selector lever is moved to each position.

       Standard resistance 

       TESTER CONNECTION SPECIFIED CONDITION
       
       

       Gear Selector Lever Position	Tester Connection	Specified Condition
       P	2 - 6, 4 - 5	Below 1 Ω
       R	1 - 2
       N	2 - 9, 4 - 5
       D	2 - 7
       2	2 - 3
       L	2 - 8

    3. Reconnect the PNP switch connector.
    Fig 3: Identifying PNP Switch Connector Terminals

    Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

    NG: REPLACE PARK/NEUTRAL POSITION SWITCH 

    OK: CHECK CRANKING HOLDING FUNCTION CIRCUIT