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

DESCRIPTION

When the electronic key is in the cabin and the power switch is pressed, the power management control ECU receives a signal and changes the power source mode. In addition, when the power switch is pressed with park (P) selected and the brake pedal depressed, the hybrid system turns on (READY).

WIRING DIAGRAM

A01JDAHE03
A01JBW1E01

INSPECTION PROCEDURE

Note


  • When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, power source mode that was selected when the auxiliary battery was removed is restored.

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

PROCEDURE


  1. CHECK HYBRID SYSTEM READY ON


    1. Place the electrical key on the driver seat.

    2. Depress the brake pedal.

    3. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).

      OK
      Power source mode becomes on (READY).

    NG

    CHECK FOR DTC Click here

    OK

    END (HYBRID SYSTEM PERMISSION CONDITIONS WERE NOT SATISFIED)

  2. CHECK FOR DTC


    1. Turn the power switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the intelligent tester on.

    5. Enter the following menus: Powertrain / Hybrid Control / DTC.

    6. Check for DTCs.

      OK
      DTC is not output.

    NG

    GO TO HYBRID CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    OK

  3. CHECK FOR DTC


    1. Enter the following menus: Body / Power Source Control / Data List.

    2. Check for DTCs.

      OK
      DTC is not output.

    NG

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    OK

  4. CHECK POWER SOURCE CONDITION


    1. Check the power source mode change.


      1. When the key is inside the vehicle and the park (P) is selected, check that pressing the power switch causes the power source mode to change.

        Result
        Result Proceed to
        off → on (ACC) → on (IG) → off A
        Power source mode does not change to on (IG and ACC) B
        Power source mode does not change to on (IG) C
        Power source mode does not change to on (ACC) D

    B

    GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (IG and ACC)) Click here

    C

    GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (IG)) Click here

    D

    GO TO OTHER FLOW CHART (Power Source Mode does not Change to ON (ACC)) Click here

    A

  5. READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH ASSEMBLY)


    1. Read the Data List according to the display on the intelligent tester.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Stop Light Switch1 Stop light switch 1/ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      OK
      ON (brake pedal is depressed) and OFF (brake pedal is released) appear on the screen.

    NG

    CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - POWER SOURCE AND BODY GROUND) Click here

    OK

  6. READ VALUE USING INTELLIGENT TESTER (L CODE)


    1. Enter the following menus: Body / Entry & Start / Data List.

    2. Read the Data List according to the display on the intelligent tester.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      L Code Check L code certification result/OK or NG

      OK: L code certification result normal

      NG: L code certification result abnormal

      		 -
      OK
      OK appears on the screen.

    NG

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    OK

  7. READ VALUE USING INTELLIGENT TESTER (ENGINE START REQUEST)


    1. Read the Data List according to the display on the intelligent tester.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Engine Start Request Start request signal response/OK or NG

      OK: Start request condition signal received

      NG: Start request condition signal not received

      		 -
      OK
      OK appears on the screen.
      Result
      Result Proceed to
      OK (w/ Airbag Cut-off Switch) A
      OK (w/o Airbag Cut-off Switch) B
      NG C

    B

    READ VALUE USING INTELLIGENT TESTER Click here

    C

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    A

  8. READ VALUE USING INTELLIGENT TESTER (S CODE)


    1. Read the Data List according to the display on the intelligent tester.

      Entry & Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Check S code certification result/OK or NG

      OK: S code certification result normal

      NG: S code certification result abnormal

      		 -
      OK
      OK appears on the screen.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

    OK

  9. CHECK ID CODE BOX (IMMOBILISER CODE ECU)


    1. A01J9H0E01

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


      1. Waveform 1

        A01J8H7E01
        Tester Connection L6-20 (IMO) - L5-6 (E1)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Vehicle Condition Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected

      2. Waveform 2

        Tester Connection L6-21 (IMI) - L5-6 (E1)
        Tool Setting 5 V/DIV., 50 ms./DIV.
        Vehicle Condition Power switch on (IG)
        OK
        The waveform is displayed as shown in illustration.
        Text in Illustration
        *1

        Component with harness connected

        (Power Management Control ECU)

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

    OK

  10. READ VALUE USING INTELLIGENT TESTER


    1. Enter the following menus: Body / Power Source Control / Data List.

    2. Read the Data List according to the display on the intelligent tester.

      Power Source Control
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Starter Request Signal Hybrid control system start request signal / ON or OFF

      ON: STSW signal is on

      OFF: STSW signal is off

      		 -
      OK
      Data List display changes when the power switch is operated.

    NG

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    OK

    GO TO HYBRID CONTROL SYSTEM Click here

  11. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - POWER SOURCE AND BODY GROUND)


    1. A01JCQ1E16
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Stop Light Switch Assembly)

      Disconnect the A67 connector from the stop light switch assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A67-1 (B) - A67-3 (GND) Always 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      A67-3 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK STOP LIGHT SWITCH ASSEMBLY


    1. A01JCFXE13
      Text in Illustration
      *a

      Component with harness connected

      (Stop Light Switch Assembly)

      Reconnect the A67 connector to the stop light switch assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A67-2 (L) - A67-3 (GND) Power switch off, brake pedal not depressed Below 1 V
      A67-2 (L) - A67-3 (GND) Power switch off, brake pedal depressed 11 to 14 V

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY)


    1. Disconnect the A22 connector from the power management control ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A22-23 (STP) - A67-2 (L) Always Below 1 Ω
      A22-23 (STP)- Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY)

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  14. REPLACE TRANSMISSION CONTROL ECU ASSEMBLY


    1. Replace transmission control ECU assembly Click here.


    NEXT

  15. CHECK HYBRID SYSTEM READY ON


    1. Place the electrical key on the driver seat.

    2. Depress the brake pedal.

    3. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).

      OK
      Power source mode becomes on (READY).
      Result
      Result Proceed to
      OK A
      NG (w/ Airbag Cut-off Switch) B
      NG (w/o Airbag Cut-off Switch) C

    B

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

    C

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A

    END (TRANSMISSION CONTROL ECU WAS DEFECTIVE)

  16. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace certification ECU (Entry & Start ECU assembly).


    NEXT

  17. CHECK HYBRID SYSTEM READY ON


    1. Place the electrical key on the driver seat.

    2. Depress the brake pedal.

    3. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).

      OK
      Power source mode becomes on (READY).

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

    OK

    END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)