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 the shift lever in P and the brake pedal depressed, the hybrid system turns on (READY).

WIRING DIAGRAM

A01NM02E05
A01NK3RE02

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, the 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. Move the shift lever to P.

    3. Depress the brake pedal.

    4. 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 if the power source mode changes.


      1. When the key is inside the vehicle and the shift lever is in P, check that the power source mode changes.

        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 (STEERING UNLOCK SWITCH)


    1. Enter the following menus: Body / Power Source Control / Date 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
      Steering Unlock Switch Steering unlock condition/ON or OFF

      ON: Steering unlocked

      OFF: Steering locked

      		 -
      OK
      ON (steering is unlocked) and OFF (steering is locked) appear on the screen.

    NG

    GO TO STEERING LOCK SYSTEM Click here

    OK

  6. 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

  7. 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 STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Click here

    OK

  8. 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.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  9. 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

  10. CHECK ID CODE BOX (IMMOBILISER CODE ECU)


    1. A01NL8CE01
      Text in Illustration
      *1

      Component with harness connected

      (Power Management Control ECU)

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

      Tester Connection

      CH1: F98-20 (IMO) - F97-6 (E1)

      CH2: F98-21 (IMI) - F97-6 (E1)
      Tool Setting 5 V/DIV., 200 ms/DIV
      Idling with warm engine off → on (IG) → on (READY)
      OK
      The waveform is displayed as shown in illustration.

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

    OK

  11. 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

      		 -

    3. Proceed to the next step based on inspection result.

      Result
      Result Proceed to
      Data List display changes when the power switch is operated. A
      Data List display does not change even when the power switch is operated. (for LHD) B
      Data List display does not change even when the power switch is operated. (for RHD) C

    B

    REPLACE POWER MANAGEMENT CONTROL ECU (for LHD) Click here

    C

    REPLACE POWER MANAGEMENT CONTROL ECU (for RHD) Click here

    A

    GO TO HYBRID CONTROL SYSTEM Click here

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


    1. A01NMCNE51
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Stop Light Switch Assembly)

      Disconnect the A108 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
      A108-1 (B) - A108-3 (GND) Always 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      A108-3 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK STOP LIGHT SWITCH ASSEMBLY


    1. A01NLW4E52
      Text in Illustration
      *1

      Component with harness connected

      (Stop Light Switch Assembly)

      Reconnect the A108 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
      A108-2 (L) - A108-3 (GND) Power switch off, brake pedal not depressed Below 1 V
      A108-2 (L) - A108-3 (GND) Power switch off, brake pedal depressed 11 to 14 V

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

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


    1. A01NJX6E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Management Control ECU)
      *2

      Front view of wire harness connector

      (to Stop Light Switch Assembly)

      Disconnect the A81 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
      A81-23 (STP) - A108-2 (L) Always Below 1 Ω
      A81-23 (STP) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU

  15. REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)


    1. Replace steering lock actuator Click here.


    NEXT

  16. CHECK HYBRID SYSTEM READY ON


    1. Place the electrical key on the driver seat.

    2. Move the shift lever to P.

    3. Depress the brake pedal.

    4. 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 (STEERING LOCK ACTUATOR (STEERING LOCK ECU) WAS DEFECTIVE)

  17. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace certification ECU (smart key ECU assembly).


    NEXT

  18. CHECK HYBRID SYSTEM READY ON


    1. Place the electrical key on the driver seat.

    2. Move the shift lever to P.

    3. Depress the brake pedal.

    4. 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 (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE)