ENTRY AND START SYSTEM (for Start Function) Power Source Mode does not Change to ON (IG)

DESCRIPTION

When the engine switch is pushed with the electrical key in the cabin, the power management control ECU*1 or power source control ECU*2 receives signals to switch the power source mode.

Tech Tips

To allow use of the intelligent tester to inspect the push-button start function when the engine switch is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between the intelligent tester and power management control ECU*1 or power source control ECU*2. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)


WIRING DIAGRAM

Refer to Power Source Mode does not Change to ON (IG and ACC) Click here.

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A011B8UE33
    Text in Illustration
    *A for 1KR-FE and 1NR-FE
    *B for 1ND-TV
    *1

    Rear view of wire harness connector

    (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
    *2

    Rear view of wire harness connector

    (to Power Source Control ECU) (for 1ND-TV)

    1. Disconnect the D38 or D73 ECU connector.

    2. Measure the voltage according to the value(s) in the table below.


      1. for 1KR-FE and 1NR-FE

        Standard Voltage
        Tester Connection Condition Specified Condition
        D38-2 (AM21) - Body ground Always 9.5 to 16 V
        D38-1 (AM22) - Body ground

      2. for 1ND-TV

        Standard Voltage
        Tester Connection Condition Specified Condition
        D73-2 (AM21) - Body ground Always 9.5 to 16 V
        D73-1 (AM22) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (GROUND)

    A011B8UE34
    Text in Illustration
    *A for 1KR-FE and 1NR-FE
    *B for 1ND-TV
    *1

    Rear view of wire harness connector

    (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
    *2

    Rear view of wire harness connector

    (to Power Source Control ECU) (for 1ND-TV)

    1. Disconnect the D38 or D73 ECU connector.

    2. Measure the resistance according to the value(s) in the table below.


      1. for 1KR-FE and 1NR-FE

        Standard Resistance
        Tester Connection Condition Specified Condition
        D38-6 (GND) - Body ground Always Below 1 Ω
        D38-5 (GND2) - Body ground

      2. for 1ND-TV

        Standard Resistance
        Tester Connection Condition Specified Condition
        D73-6 (GND) - Body ground Always Below 1 Ω
        D73-5 (GND2) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Disconnect the instrument panel junction block assembly connectors.

      A0117KWE01
      Text in Illustration
      *1

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-1 - 3C-36 When battery voltage absent 10 kΩ or higher
      3A-1 - 3B-1
      3A-1 - 3C-36 When battery voltage is applied to terminals 3C-23 and 3C-10 Below 1 Ω
      3A-1 - 3B-1
    3. A0118L2E01
      Text in Illustration
      *1

      Component without harness connected

      (Integration Relay)

      Remove the integration relay from the engine room relay block.

    4. Measure the resistance according to the value(s) in the table below.


      1. for 1KR-FE and 1NR-FE

        Standard Resistance
        Tester Connection Condition Specified Condition
        1A-1 - 1B-6 When battery voltage absent 10 kΩ or higher
        When battery voltage is applied to terminals 1D-11 and 1C-3 Below 1 Ω

      2. for 1ND-TV

        Standard Resistance
        Tester Connection Condition Specified Condition
        1A-1 - 1D-1 When battery voltage absent 10 kΩ or higher
        When battery voltage is applied to terminals 1D-11 and 1C-3 Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for 1KR-FE and 1NR-FE) B
      NG (for 1ND-TV) C

    NG

    REPAIR OR REPLACE HARNESS, CONNECTOR OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU)


    1. A0117X8E03
      Text in Illustration
      *A for 1KR-FE and 1NR-FE
      *B for 1ND-TV
      *1

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)
      *2

      Rear view of wire harness connector

      (to Power Management Control ECU) (for 1KR-FE and 1NR-FE)
      *3

      Rear view of wire harness connector

      (to Power Source Control ECU) (for 1ND-TV)

      Disconnect the instrument panel junction block assembly connectors.

    2. Disconnect the D38 or D73 ECU connector.

    3. Measure the resistance according to the value(s) in the table below.


      1. for 1KR-FE and 1NR-FE

        Standard Resistance
        Tester Connection Condition Specified Condition
        D38-20 (IG1D) - 3C-23 Always Below 1 Ω
        3C-10 - Body ground

      2. for 1ND-TV

        Standard Resistance
        Tester Connection Condition Specified Condition
        D73-20 (IG1D) - 3C-23 Always Below 1 Ω
        3C-10 - Body ground
        Result
        Result Proceed to
        OK (for 1KR-FE and 1NR-FE) A
        NG (for 1KR-FE and 1NR-FE) B
        OK (for 1ND-TV) C
        NG (for 1ND-TV) D

    B

    REPAIR OR REPLACE HARNESS, CONNECTOR OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    C

    Click here

    D

    REPAIR OR REPLACE HARNESS, CONNECTOR OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    A

  5. INSPECT POWER MANAGEMENT CONTROL ECU


    1. A0118F0E01
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Reconnect the D36 and D38 ECU connectors.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D36-8 (IG2D) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more.
      D38-20 (IG1D) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more.

    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

  6. CHECK ENGINE SWITCH


    1. Check that the power changes to on (ACC) and on (IG) when operating the engine switch.

      OK
      The power changes to on (ACC) and on (IG) in response to the operation of the engine switch.

    NG

    CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)

    OK

    END

  7. REPAIR OR REPLACE HARNESS, CONNECTOR OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Repair or replace harness, connector or instrument panel junction block assembly.


    NEXT

  8. INSPECT POWER MANAGEMENT CONTROL ECU


    1. A0118F0E01
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Reconnect the D36 and D38 ECU connectors.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D36-8 (IG2D) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more.
      D38-20 (IG1D) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more.

    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

  9. CHECK ENGINE SWITCH


    1. Check that the power changes to on (ACC) and on (IG) when operating the engine switch.

      OK
      The power changes to on (ACC) and on (IG) in response to the operation of the engine switch.

    NG

    CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)

    OK

    END

  10. INSPECT POWER SOURCE CONTROL ECU


    1. A0118F0E04
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Source Control ECU)

      Reconnect the power source control ECU connectors.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D73-19 (ACCD) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more.

    NG

    REPLACE POWER SOURCE CONTROL ECU

    OK

  11. CHECK ENGINE SWITCH


    1. Check that the power changes to on (ACC) and on (IG) when operating the engine switch.

      OK
      The power changes to on (ACC) and on (IG) in response to the operation of the engine switch.

    NG

    CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)

    OK

    END

  12. REPAIR OR REPLACE HARNESS, CONNECTOR OR INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Repair or replace harness, connector or instrument panel junction block assembly.


    NEXT

  13. INSPECT POWER SOURCE CONTROL ECU


    1. A0118F0E03
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Source Control ECU)

      Reconnect the D72 and D73 ECU connectors.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D72-8 (IG2D) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more.
      D73-20 (IG1D) - Body ground Engine switch off Below 1 V
      Engine switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more.

    NG

    REPLACE POWER SOURCE CONTROL ECU

    OK

  14. CHECK ENGINE SWITCH


    1. Check that the power changes to on (ACC) and on (IG) when operating the engine switch.

      OK
      The power changes to on (ACC) and on (IG) in response to the operation of the engine switch.

    NG

    CHECK HARNESS AND CONNECTOR (BATTERY - RELAY)

    OK

    END