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

A00443IE02
A0042EUE01

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
    OK
  2. CHECK FOR DTC


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

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

    6. Check for DTCs.

      OK
      DTC is not output.

    NG
    OK
  3. CHECK FOR DTC


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

    2. Check for DTCs.

      OK
      DTC is not output.

    NG
    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
    C
    D
    A
  5. READ VALUE USING GTS (STOP LIGHT SWITCH ASSEMBLY)


    1. Read the Data List according to the display on the GTS.

      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
    OK
  6. READ VALUE USING GTS (L CODE)


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

    2. Read the Data List according to the display on the GTS.

      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
    OK
  7. READ VALUE USING GTS (ENGINE START REQUEST)


    1. Read the Data List according to the display on the GTS.

      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.

    NG
    OK
  8. READ VALUE USING GTS (S CODE)


    1. Read the Data List according to the display on the GTS.

      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
    OK
  9. CHECK ID CODE BOX (IMMOBILISER CODE ECU)


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

      A0040EVE02

      1. Waveform 1

        A00424LE01
        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 auxiliary battery disconnected and connected
      2. Waveform 2

        A0043IIE01
        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
        *a

        Component with harness connected

        (Power Management Control ECU)

        - -

    NG
    OK
  10. READ VALUE USING GTS


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

    2. Read the Data List according to the display on the GTS.

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


    1. A0042O5E55
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Stop Light Switch Assembly)

      Disconnect the A26 stop light switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A26-1 (B) - A26-3 (GND) Always 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      A26-3 (GND) - Body ground Always Below 1 Ω

    NG
    OK
  12. CHECK STOP LIGHT SWITCH ASSEMBLY


    1. A0042F4E57
      Text in Illustration
      *a

      Component with harness connected

      (Stop Light Switch Assembly)

      Reconnect the A26 stop light switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A26-2 (L) - A26-3 (GND) Power switch off, brake pedal not depressed Below 1 V
      A26-2 (L) - A26-3 (GND) Power switch off, brake pedal depressed 11 to 14 V

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


    1. Disconnect the A21 power management control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A21-23 (STP) - A26-2 (L) Always Below 1 Ω
      A21-23 (STP) - Body ground Always 10 kΩ or higher

    NG
    OK
  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).

    NG
    OK
  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
    OK