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Cranking Holding Function Circuit [09/2015 - ]: Procedure

  1. CHECK OPERATION OF CRANKING 
    1. When starting the engine, check whether the starter motor starts.

      Result

      Starter Condition Proceed to
      Not operating A
      Operating B

    Result:  B

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

    (Refer to PROBLEM SYMPTOMS TABLE [09/2015 - ] )

    Result:  A

    See step  2

  2. CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (ENGINE DOES NOT START) 
    1. Refer to Smart Access System With Push-button Start [Engine does not Start] (Refer to Engine does not Start [09/2015 - ] ).

    Result:  NG

    NG 

    REPAIR SMART ACCESS SYSTEM WITH PUSH-BUTTON START (ENGINE DOES NOT START) 

    (Refer to Engine does not Start [09/2015 - ] )

    Result:  OK

    OK 

    See step  3

  3. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG) and turn the Techstream on.
    3. Enter the following menus: Powertrain / Engine / Data List / All Data / Starter Signal.
    4. Check the result when the engine switch is turned on (IG) and the engine is started.

      Standard

      Starter Signal Engine Switch Position
      OFF on (IG)
      ON Engine start

    Result:  OK

    OK 

    See step  10

    Result:  NG

    NG 

    See step  4

  4. INSPECT ECM (STAR AND STSW VOLTAGE) 
    1. Measure the voltage according to the value(s) in the table below while cranking the engine.
      GTY621806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage

      Tester Connection Condition Specified Condition
      A14-2 (STAR) - E3-1 (E1) Cranking 11 to 14 V
      A14-27 (STSW) - E3-1 (E1) Cranking 11 to 14 V

      Result

      Terminal STAR Terminal STSW Proceed to
      11 to 14 V 11 to 14 V A
      0 V 11 to 14 V B
      0 V 0 V C

    Result:  B

    REPLACE ECM 

    (Refer to REMOVAL [09/2015 - ] )

    Result:  C

    GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START 

    (Refer to Engine does not Start [09/2015 - ] )

    Result:  A

    See step  5

  5. INSPECT STARTER CUT RELAY (ST CUT) 
    1. Remove the ST CUT relay from the engine room No. 2 relay block.
      GTY141650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      3 - 5 When no battery voltage applied to terminals 1 and 2 10 kΩ or higher
      3 - 5 When battery voltage applied to terminals 1 and 2 Below 1 Ω

    Result:  NG

    NG 

    REPLACE STARTER CUT RELAY (ST CUT) 

    Result:  OK

    OK 

    See step  6

  6. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Disconnect the park/neutral position (PNP) switch connector.
      GTY658728Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      4 (B) - 5 (L) Shift position P Below 1 Ω
      4 (B) - 5 (L) Shift position N Below 1 Ω
      RESULT

      Result Proceed to
      OK A
      NG (for 2WD) B
      NG (for AWD) C

    Result:  B

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

    (Refer to REMOVAL [09/2015 - ] )

    Result:  C

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

    (Refer to REMOVAL [09/2015 - ] )

    Result:  A

    See step  7

  7. CHECK HARNESS AND CONNECTOR (STARTER CUT RELAY (ST CUT) - PARK/NEUTRAL POSITION SWITCH) 
    1. Remove the ST CUT relay from the engine room No. 2 relay block.
      GTY618764Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E49 PNP switch connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      ST CUT relay (3) - E49-4 (B) Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      ST CUT relay (3) or E49-4 (B) - Body ground Always 10 kΩ or higher

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (STARTER CUT RELAY (ST CUT) - ECM) 
    1. Remove the ST CUT relay from the engine room No. 2 relay block.
      GTY625354Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the A14 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      ST CUT relay (5) - A14-2 (STAR) Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      ST CUT relay (5) or A14-2 (STAR) - Body ground Always 10 kΩ or higher

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  9

  9. CHECK ENGINE ROOM NO. 2 RELAY BLOCK, JUNCTION BLOCK (STARTER CUT RELAY (ST CUT) - IGNITION RELAY NO. 2 (IG2), BODY GROUND) 
    1. Remove the IG2 relay from the engine room No. 2 junction block.
      GTY516879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the ST CUT relay from the engine room No. 2 relay block.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      ST CUT relay (2) - IG2 relay (3) Always Below 1 Ω
      ST CUT relay (1) - Body ground Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      ST CUT relay (2) - Body ground Always 10 kΩ or higher
      IG2 relay (3) - Body ground Always 10 kΩ or higher

    Result:  OK

    OK 

    REPLACE HARNESS OR CONNECTOR (IGNITION RELAY NO. 2 (IG2) - BATTERY) 

    Result:  NG

    NG 

    REPLACE ENGINE ROOM NO. 2 RELAY BLOCK, JUNCTION BLOCK 

  10. INSPECT STARTER RELAY (ST) 
    1. Remove the ST relay from the engine room No. 2 relay block.
      GTY141650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      3 - 5 When no battery voltage applied to terminals 1 and 2 10 kΩ or higher
      3 - 5 When battery voltage applied to terminals 1 and 2 Below 1 Ω

    Result:  NG

    NG 

    REPLACE STARTER RELAY (ST) 

    Result:  OK

    OK 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (STARTER RELAY (ST) - PARK/NEUTRAL POSITION SWITCH, BODY GROUND) 
    1. Remove the ST relay from the engine room No. 2 relay block.
      GTY633226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E49 PNP switch connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      ST relay (1) - E49-5 (L) Always Below 1 Ω
      ST relay (2) - Body ground Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      ST relay (1) or E49-5 (L) - Body ground Always 10 kΩ or higher

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  12

  12. INSPECT STARTER ASSEMBLY 
    1. Inspect the starter assembly.

      HINT: 

      RESULT

      Result Proceed to
      OK A
      NG (for 2WD) B
      NG (for AWD) C

    Result:  B

    REPLACE STARTER ASSEMBLY 

    (Refer to REMOVAL [09/2015 - ] )

    Result:  C

    REPLACE STARTER ASSEMBLY 

    (Refer to REMOVAL [09/2015 - ] )

    Result:  A

    See step  13

  13. CHECK HARNESS AND CONNECTOR (STARTER ASSEMBLY - STARTER RELAY (ST), BATTERY) 
    1. Remove the ST relay from the engine room No. 2 relay block.
      GTY673477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E25 and F1 starter connectors.
    3. Disconnect the cable from the positive battery terminal.
    4. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      ST relay (3) - E25-1 Always Below 1 Ω
      F1-1 - Battery cable (+) Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      ST relay (3) or E25-1 - Body ground Always 10 kΩ or higher
      F1-1 or Battery cable (+) - Body ground Always 10 kΩ or higher

    Result:  OK

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY (ST) - BATTERY) 

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR