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

A003TO8E01
A003UFNE01

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

    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: Certification confirmed

      NG: Certification not confirmed

      		 -
      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 A
      NG B

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    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: Certification confirmed

      NG: Certification not confirmed

      		 -
      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. A003SQCE03

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


      1. Waveform 1

        A003SEXE01
        Tester Connection E112-20 (IMO) - E111-6 (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 E112-21 (IMI) - E111-6 (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 Starter request signal monitor/ON or OFF

      ON: ST relay on

      OFF: ST relay 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. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Remove the stop light switch assembly Click here.

      A003UIPE06

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      1 - 2 Pushed 10 kΩ or higher
      Not pushed Below 1 Ω
      3 - 4 Pushed Below 1 Ω
      Not pushed 10 kΩ or higher
      Text in Illustration
      *1

      Component without harness connected

      (Stop Light Switch Assembly)

      		 - -

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the A99 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
      A99-23 (STP) - A1-1 Always Below 1 Ω
      A99-23 (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

  13. REPLACE TRANSMISSION CONTROL ECU ASSEMBLY


    1. Replace transmission control ECU assembly Click here.


    NEXT

  14. 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 (TRANSMISSION CONTROL ECU ASSEMBLY WAS DEFECTIVE)

  15. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


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


    NEXT

  16. 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)