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

DESCRIPTION

When the electrical key transmitter sub-assembly 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 control system turns on (READY).

Tech Tips


  • When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).

  • When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

WIRING DIAGRAM

Refer to "System Diagram"

Click here

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the power switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • The entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

  • If the entry and start system (for Start Function) is disabled through the customize function, enable the system before performing troubleshooting.

    Click here

  • Before replacing the power management control ECU, certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) or transmission control ECU assembly, refer to entry and start system (for Start Function) Precaution.

    Click here

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

  • After completing repairs, confirm that the problem does not recur.

Tech Tips

Related Data List and Active Test Items
Problem Symptom Data List Item Active Test Item
Power source mode does not change to ON (READY)

    Power Source Control

  • Stop Light Switch1

  • Power Supply Condition

  • IG1 Relay Monitor(Inside)

  • IG2 Relay Monitor(Inside)

  • IG1 Relay Monitor(Outside)

  • IG2 Relay Monitor(Outside)

  • Latch Circuit

  • Starter Request Signal


    Entry&Start

  • Immobiliser

  • S Code Check

  • L Code Check

  • Engine Start Condition

 -

PROCEDURE


  1. CHECK HYBRID CONTROL SYSTEM (READY ON)


    1. Place the electrical key transmitter sub-assembly on the driver seat.

    2. Push the P position switch (transmission shift main switch).

    3. Depress the brake pedal.

    4. Confirm that the smart warning light is displayed, and then press the power switch and check that the power source mode changes to on (READY).

      OK
      Power source mode changes to on (READY).
      Result
      Proceed to
      OK
      NG

    OK

    END (USE SIMULATION METHOD TO CHECK) Click here

    NG

  2. CHECK AUXILIARY BATTERY


    1. Measure the auxiliary battery voltage with the power switch off.

      Standard Voltage
      11 to 14 V

      Tech Tips


      • It may be possible to tell whether the auxiliary battery is discharged by operating the horn.

      • If the auxiliary battery voltage is less than 11 V, recharge or replace it.

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTC (ALL)


    1. Using the GTS, check for DTCs for all systems.

      OK
      No DTCs are output.

      Note

      Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart.

      Result
      Proceed to
      OK
      NG

    NG

    GO TO DTC CHART

    OK

  4. CHECK WAVE ENVIRONMENT


    1. If the problem occurs in certain locations or times of day, the possibility of wave interference is high.

    2. Confirm that the smart warning light is displayed, and then press the power switch and check that the hybrid control system turns on (READY).

      Tech Tips

      Whether the problem is due to wave interference can be checked by holding the electrical key transmitter sub-assembly near the door control receiver.

      OK
      Power source mode becomes on (READY).
      Result
      Proceed to
      OK
      NG

    OK

    AFFECTED BY WAVE INTERFERENCE

    NG

  5. CHECK POWER SWITCH CONDITION


    1. Get into the vehicle while carrying an electrical key transmitter sub-assembly.

    2. Push the P position switch (transmission shift main switch).

    3. With the brake pedal released, 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 (ACC) and on (IG) B
      Power source mode changes to on (IG) but not to on (ACC) C
      Power source mode changes to on (ACC) but not to on (IG) D

    B

    GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG AND ACC) Click here

    C

    GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (IG) Click here

    D

    GO TO POWER SOURCE MODE DOES NOT CHANGE TO ON (ACC) Click here

    A

  6. READ VALUE USING GTS (STOP LIGHT SWITCH1)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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


      Body Electrical > Power Source Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stop Light Switch1 State of brake pedal ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      • Use this item to determine whether the stop light switch is malfunctioning.

      • The hybrid control system cannot be started when this item is OFF.

      • When this item is malfunctioning, the hybrid control system can be started by pressing and holding the power switch for a certain period of time.

      Body Electrical > Power Source Control > Data List
      Tester Display
      Stop Light Switch1
      OK
      The GTS display changes correctly in response to the brake pedal operation.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  7. READ VALUE USING GTS (L CODE CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      L Code Check Verification result between ID code box (immobiliser code ECU) and transmission control ECU assembly OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • The ID code for the ID code box (immobiliser code ECU) or transmission control ECU assembly is not registered or the ID code box (immobiliser code ECU) or transmission control ECU assembly is malfunctioning.

      • Gearshift control cannot be locked

      • Gearshift control cannot be unlocked (the hybrid control system cannot be started).

      Body Electrical > Entry&Start > Data List
      Tester Display
      L Code Check
      OK
      OK (verification result normal) is displayed on the GTS screen when the electrical key transmitter sub-assembly is in the cabin.

      Tech Tips

      Reasons for verification failure:


      • The transmission control ECU assembly or ID code box (immobiliser code ECU) is malfunctioning.

      • There is a problem with the communication between ECUs.

      • An ECU has been replaced, but is not registered.

      • An ECU has been replaced with an ECU which has a code already stored in it.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    OK

  8. READ VALUE USING GTS (ENGINE START CONDITION)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Engine Start Condition Status of hybrid control system start permission signal determined by transmission control ECU assembly and sent to certification ECU (smart key ECU assembly) OK or NG

      OK: Hybrid control system start permitted

      NG: Hybrid control system start prohibited

      • When OK is displayed, the certification ECU (smart key ECU assembly) receives an unlock confirmation signal from the transmission control ECU assembly and starting of the hybrid control system is possible.

      • The hybrid control system cannot be started when NG is displayed.

      Body Electrical > Entry&Start > Data List
      Tester Display
      Engine Start Condition

      Note

      Check that the smart warning light is displayed on the multi-information display in the combination meter assembly, and then press the power switch.

      OK
      The GTS display changes correctly in response to the operation of the power switch.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  9. READ VALUE USING GTS (S CODE CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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


      Body Electrical > Entry&Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) OK or NG

      OK: Verification result normal

      NG: Verification result abnormal

      When NG is displayed:


      • The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered, or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

      • The gearshift control cannot be locked.

      • The gearshift control cannot be unlocked (the hybrid control system cannot be started).

      Body Electrical > Entry&Start > Data List
      Tester Display
      S Code Check
      OK
      OK (verification result normal) is displayed on the GTS screen.

      Tech Tips

      Reasons for verification failure:


      • The certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

      • There is a problem with the communication between ECUs.

      • An ECU has been replaced, but is not registered.

      • An ECU has been replaced with an ECU which has a code already stored in it.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

    OK

  10. CHECK IMMOBILISER SYSTEM


    1. A01G3L1C06
      *a

      Component with harness connected

      (Power Management Control ECU)

      Check the signal waveform according to the condition(s) in the table below.


      1. Waveform 1

        A01G3TFC03
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection E112-20 (IMO) - E111-6 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      2. Waveform 2

        A01G385C02
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection E112-21 (IMI) - E111-6 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected
        OK
        The waveform is similar to that shown in the illustration.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

    OK

  11. READ VALUE USING GTS (STARTER REQUEST SIGNAL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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


      Body Electrical > Power Source Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Starter Request Signal Hybrid control system start request signal status ON or OFF

      ON: With park (P) selected and brake pedal depressed, power switch pressed and held

      OFF: After approx. 1 second has elapsed, power switch released

      • When the hybrid control system cannot be started due to a start request signal malfunction, OFF is displayed.

      • When the power switch is pressed, the duration of time that ON is displayed will be extremely short. As such, the power switch needs to be pressed and held for a certain period of time.

      Body Electrical > Power Source Control > Data List
      Tester Display
      Starter Request Signal

      Note

      Check that the smart warning light is displayed on the multi-information display in the combination meter assembly, and then press the power switch.

      OK
      The GTS display changes correctly in response to the operation of the power switch.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    GO TO HYBRID CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    C

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

  12. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) with a new one.

    2. Perform the registration procedure.

      Tech Tips

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  13. CHECK HYBRID CONTROL SYSTEM (READY ON)


    1. Place the electrical key transmitter sub-assembly on the driver seat.

    2. Push the P position switch (transmission shift main switch).

    3. Depress the brake pedal.

    4. Confirm that the smart warning light is displayed, and then press the power switch and check that the power source mode changes to on (READY).

      OK
      Power source mode changes to on (READY).
      Result
      Proceed to
      OK
      NG

    OK

    END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

  14. REPLACE TRANSMISSION CONTROL ECU ASSEMBLY


    1. Replace the transmission control ECU assembly with a new one.

      for LHD: Click here

      for RHD: Click here

    2. Perform the registration procedure.

      Tech Tips

      Refer to Service Bulletin.

      Result
      Proceed to
      NEXT

    NEXT

  15. CHECK HYBRID CONTROL SYSTEM (READY ON)


    1. Place the electrical key transmitter sub-assembly on the driver seat.

    2. Push the P position switch (transmission shift main switch).

    3. Depress the brake pedal.

    4. Confirm that the smart warning light is displayed, and then press the power switch and check that the power source mode changes to on (READY).

      OK
      Power source mode changes to on (READY).
      Result
      Proceed to
      OK
      NG

    OK

    END (TRANSMISSION CONTROL ECU ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

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

    Result
    Proceed to
    OK
    NG

    1. Disconnect the A124 stop light switch assembly connector.

    2. A01KSMBC02
      *a

      Front view of wire harness connector

      (to Stop Light Switch Assembly)

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

      Standard Voltage
      Tester Connection Condition Always
      A124-7 (B) - A124-2 (GND) Power switch off 11 to 14 V
      Standard Resistance
      Tester Connection Condition Always
      A124-2 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. CHECK STOP LIGHT SWITCH ASSEMBLY

    Click here

    Result
    Proceed to
    OK
    NG

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

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

    Result
    Result Proceed to
    OK (for LHD) A
    OK (for RHD) B
    NG C

    1. A0139C2C05
      *a

      Front view of wire harness connector

      (to Power Management Control ECU)

      Disconnect the A130 power management control ECU connector.

    2. Disconnect the A124 stop light switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A130-23 (STP) - A124-3 (L) Always Below 1 Ω
      A130-23 (STP) or A124-3 (L) - Body ground Always 10 kΩ or higher

    4. Reconnect the A124 stop light switch assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A130-23 (STP) - Body ground Brake pedal released 1 V or less
      Brake pedal depressed 9 V or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR