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 certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. Additionally, when the shift state is park (P) and the brake pedal is depressed, the hybrid control system can be started by pressing the power switch. If the steering is unlocked, the hybrid control system can also be started by pressing the power switch with the shift state park (P) and the brake pedal depressed.

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

    Power Source Control

  • Stop Light Switch1

  • Steering Unlock Switch

  • Shift P Signal Pulse

  • IG Relay Monitor (Inside)

  • IG Relay Monitor (Outside)

  • Latch Circuit

  • Starter Request Signal

  • Power Supply Condition


    Entry&Start

  • Immobiliser

  • Engine Start Request

  • S Code Check

  • L Code Check

WIRING DIAGRAM

B004BN5E02

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. 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.

  • If the entry and start system (for Start Function) has been canceled, enable the system before performing troubleshooting.

    Click here

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

  • Before replacing the certification ECU (smart key ECU assembly) or an electrical key transmitter sub-assembly, refer to the Service Bulletin.

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

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

  • When disconnecting the cable from the negative (-) auxiliary battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.

    Click here

PROCEDURE


  1. CHECK POWER SWITCH CONDITION


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

    2. Push the P position switch(shift position indication).

    3. With the brake pedal released, check that pressing the power switch causes the power source mode to change.

      Result
      Result Proceed to
      Power source mode changes : Off → on (ACC) → on (IG) → off A
      Power source mode does not change to on (ACC) or 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 ENTRY AND START SYSTEM (for Start Function) (Power Source Mode does not Change to ON (IG and ACC)) Click here

    C

    GO TO ENTRY AND START SYSTEM (for Start Function) (Power Source Mode does not Change to ON (IG)) Click here

    D

    GO TO ENTRY AND START SYSTEM (for Start Function) (Power Source Mode does not Change to ON (IG)) Click here

    A

  2. 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 OFF or ON

      OFF: Brake pedal released

      ON: Brake pedal depressed

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

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

      • If the stop light switch assembly 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 SUPPLY AND BODY GROUND) Click here

    OK

  3. READ VALUE USING GTS (SHIFT POSITION P)


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

    2. 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
      Shift P Signal Pulse P position signal status Normal2, Normal3, Normal4, Normal5 or Unknown

      Normal2: Signal normal and park (P) selected

      Normal3: Signal normal and shift state other than (P)

      Normal4: Signal normal and park (N) selected

      Normal5: Signal normal and park other than (P) or (N) selected

      Unknown: -

      		 Use this item to determine if the P position signal is malfunctioning.

      Body Electrical > Power Source Control > Data List
      Tester Display
      Shift P Signal Pulse
      OK
      The GTS display changes correctly in response to the shift state.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK SHIFT CONTROL ECU (OUTPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Click here

    OK

  4. READ VALUE USING GTS (STARTER REQUEST SIGNAL)


    1. 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 OFF or ON

      OFF: The power switch is not pressed

      ON: With the shift state park (P) and the brake pedal depressed, the power switch is pressed and held

      • 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 key indicator display 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 power switch operation.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK STEERING LOCK Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - HYBRID VEHICLE CONTROL ECU ASSEMBLY)


    1. Disconnect the P66 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the P64 hybrid vehicle control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P66-27 (ST2) - P64-9 (ST2) Always Below 1 Ω
      P66-27 (ST2) or P64-9 (ST2) - Other terminals and body ground Always 10 kΩ or higher

    4. Connect the P66 certification ECU (smart key ECU assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. B004C79C68
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      P66-27 (ST2) - Body ground With the brake pedal depressed, the power switch is pressed and held → After approximately 3 sec. has elapsed, the power switch is released 8.5 V or higher → 1 V or less
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

  7. CHECK STEERING LOCK


    1. Check that the steering unlocks when the power switch is turned on (ACC).

      OK
      The steering unlocks.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO ENTRY AND START SYSTEM (for Start Function) (Unable to Unlock Steering Wheel (Hybrid Control System cannot Start)) Click here

    OK

  8. CHECK SECURITY INDICATOR LIGHT (IMMOBILISER FUNCTION UNSET)


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

    2. Push the P position switch(shift position indication).

    3. Press the power switch with the brake pedal released and check that the security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).

      OK
      The security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).

      Tech Tips

      The immobiliser function can be determined to be operating correctly if the security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    GO TO ENTRY AND START SYSTEM (for Start Function) (Immobiliser System does not Operate Properly) Click here

  9. CHECK SHIFT CONTROL ECU (OUTPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))


    1. Using an oscilloscope, check the waveform.

      B004B36C02
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECUAssembly))

      		 *b Waveform
      Measurement Condition
      Tester Connection Condition Tool Setting Specified Condition
      P66-22 (P) - P66-18 (E)

      Procedure:


      1. Power switch on (IG)

      2. Shift state park (P)

      		 2 V/DIV., 500 ms./DIV.

      Pulse generation

      (See waveform)

      Tech Tips

      The waveform will vary depending on the shift state.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

  10. CHECK SHIFT CONTROL ECU


    1. B004C79C76

      Disconnect the P74 shift control ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      P66-22 (P) - Other terminals and body ground

      Procedure:


      1. Power switch on (IG)

      2. Shift state park (P)

      		 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  11. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - SHIFT CONTROL ECU)


    1. Disconnect the P66 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P66-22 (P) - P74-13 (PPOS) Always Below 1 Ω
      P66-22 (P) or P74-13 (PPOS) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SHIFT CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. B004B6AC22
      *a

      Front view of wire harness connector

      (to Stop Light Switch Assembly)

      Disconnect the stop light switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A4-1 (B) - Body ground Power switch off 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A4-3 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY)


    1. Disconnect the X23 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the A22 hybrid vehicle control ECU assembly connector.

    3. Disconnect the A10 skid control ECU (brake actuator assembly) connector.

    4. Disconnect the P75 shift control ECU connector.

    5. Disconnect the cable from the negative (-) auxiliary battery terminal.

    6. Disconnect the X99 semiconductor power integration ECU ECU connector.

    7. Resconnect the cable from the negative (-) auxiliary battery terminal.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X23-25 (STP1) - A4-2 (L) Always Below 1 Ω
      X23-25 (STP1) - A4-2 (L) - Other terminals and body ground Always 10 kΩ or higher

    9. Connect the cable to the negative (-) auxiliary battery terminal.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Inspect the stop light switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here