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

DESCRIPTION


  1. POWER SWITCH ON (READY) OPERATION


    1. When the power switch is pressed with the brake pedal depressed and shift lever in P, the main body ECU determines that it is a hybrid control system start request.

    2. The certification ECU and other ECUs perform key verification via the LIN communication line. The power switch indicator light illuminates in green.

    3. The main body ECU activates the D-IG1-1 relay, D-ACC relay and ignition relay No. 2 (IG2).

    4. The certification ECU outputs a steering UNLOCK signal. The signal is sent to the steering lock ECU via the LIN communication line.

    5. The main body ECU sends a power switch ON (READY) request signal to the hybrid vehicle control ECU.

    6. The main body ECU deactivates the D-ACC relay until the ECU detects that the power switch is ON (READY).

    7. The ECU reactivates the D-ACC relay and turns OFF the power switch indicator light.

      Symbols of main body ECU Signals
      SSW1/SSW2 Power switch ON (ACC, IG) signal
      IG1D D-IG1-1 relay operation signal
      ACCD D-ACC relay operation signal
      IG2D Ignition relay No. 2 (IG2) operation signal
      STP Stop light switch signal
      P Shift lock signal
      RDY Power switch ON (READY) signal
      STSW Hybrid control system activation request signal
    A01GY7JE03

WIRING DIAGRAM

A01GZLPE03
A01H0L8E02

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK WHETHER POWER SWITCH IS ON (READY) AFTER STEERING LOCK INITIALIZATION


    1. Move the shift lever to P.

    2. Open and close the driver door when the power switch is OFF.

    3. Check that pressing the power switch causes the power source mode to change to ON (READY).

      Result
      Result Proceed to
      Power switch not ON (READY) A
      Power switch ON (READY) B

      Tech Tips

      After the battery runs out, the hybrid control system may not turn ON (READY) if the steering lock ECU has not been initialized (lock / unlock may not be recorded) through the procedure described above.


    B

    END (SYSTEM OK)

    A

  2. CHECK WHETHER DTC OUTPUT RECURS


    1. Clear the DTCs Click here.

    2. Check whether the trouble recurs 5 seconds after the power switch is turned ON (IG).

    3. Check whether DTCs for the main body ECU, certification ECU or hybrid vehicle control ECU are output.

      Result

      Display (DTC output)

      System name

      		 Proceed to
      No DTC output A

      Main body ECU

      ENTRY AND START SYSTEM

      		 B

      Certification ECU

      STEERING LOCK SYSTEM

      		 C

      Certification ECU

      ENGINE IMMOBILISER SYSTEM

      		 D

      Hybrid vehicle control ECU

      HYBRID CONTROL SYSTEM

      		 E

    B

    GO TO ENTRY AND START SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    C

    GO TO STEERING LOCK SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    D

    GO TO ENGINE IMMOBILISER SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    E

    GO TO HYBRID CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    A

  3. CHECK POWER SWITCH (SWITCH CONDITION)


    1. Ensure the key is inside the cabin.

    2. With the brake pedal released, check that the power source mode changes as shown below each time the power switch is pushed.

      OK
      OFF → ON (ACC) → ON (IG) → OFF

    NG

    GO TO ENTRY AND START SYSTEM (POWER SOURCE MODE DOES NOT CHANGE) Click here

    OK

  4. READ VALUE USING INTELLIGENT TESTER (STEERING UNLOCK SWITCH)


    1. Use the Data List to check if the steering lock condition is functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Steering Unlock Switch Steering lock condition / ON or OFF

      ON: Steering is unlocked

      OFF: Steering is locked

      		 -
      OK
      ON (steering is unlocked) and OFF (steering is locked) are displayed on the tester.

    NG

    GO TO STEERING LOCK SYSTEM (STEERING LOCK MOTOR DRIVE POWER CIRCUIT) Click here

    OK

  5. READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SW)


    1. Use the Data List to check if the stop light switch is functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Stop Light SW Stop Light switch/ON or OFF

      ON: Brake pedal is depressed

      OFF: Brake pedal is released

      		 -
      OK
      ON (brake pedal is depressed) and OFF (brake pedal is released) are displayed on the tester.

    NG

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY, STOP LIGHT SWITCH ASSEMBLY) Click here

    OK

  6. READ VALUE USING INTELLIGENT TESTER (SHIFT P SIGNAL)


    1. Use the Data List to check if the shift position is functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Shift P Signal Shift P position signal/ON or OFF

      ON: Shift lever in P

      OFF: Shift lever not in P

      		 -
      OK
      ON (shift lever in P) and OFF (shift lever not in P) are displayed on the tester.

    NG

    INSPECT SHIFT LOCK CONTROL ECU Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - HYBRID VEHICLE CONTROL ECU)

    A01H0GCE02

    1. Disconnect the A68 main body ECU connector.

    2. Disconnect the A78 hybrid vehicle control ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A68-4 (STSW) - A78-28 (ST2) Always Below 1 Ω
      A68-4 (STSW) or A78- 28 (ST2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT MAIN BODY ECU

    A01H1ERE01

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

      Tech Tips

      The voltage is generated at terminal STSW for 0.3 seconds when the power switch is turned ON (READY).

      Standard voltage
      Tester Connection Condition Specified Condition
      A68-4 (STSW) - Body ground Brake pedal depressed with shift lever in P, power switch pushed once 11 to 14 V

    NG

    REPLACE MAIN BODY ECU

    OK

  9. READ VALUE USING INTELLIGENT TESTER (L CODE CHECK)


    1. Use the Data List to check if the L code certification result is functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      L Code Check L code certification result/NG or OK

      OK: L code certification result is normal

      NG: L code certification result is abnormal

      		 -
      OK
      OK is displayed on the tester.

    NG

    ECU CODE REGISTRATION Click here

    OK

  10. READ VALUE USING INTELLIGENT TESTER (S CODE CHECK)


    1. Use the Data List to check if the S code certification result is functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Check S code certification result/NG or OK

      OK: S code certification result is normal

      NG: S code certification result is abnormal

      		 -
      OK
      OK is displayed on the tester.

    NG

    READ VALUE USING INTELLIGENT TESTER (S CODE CHECK) Click here

    OK

  11. READ VALUE USING INTELLIGENT TESTER (READY SIGNAL)


    1. Use the Data List to check if the hybrid control system start request signal is functioning properly.

      Entry&Start
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Ready Signal Hybrid control system start request signal monitor/ON or OFF

      ON: System is ON (READY)

      OFF: System is OFF

      		 -
      OK
      ON (system is ON (READY)) and OFF (system is OFF) are displayed on the tester.

    NG

    REPLACE CERTIFICATION ECU Click here

    OK

  12. REPLACE ID CODE BOX


    1. Replace the ID code box.

    2. Check that pressing the power switch causes the power source mode to change to ON (READY).

      OK
      Power switch changes to ON (READY).

    NG

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    OK

    END (SYSTEM OK)

  13. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY, STOP LIGHT SWITCH ASSEMBLY)

    A01H19LE06

    1. Disconnect the DH main body ECU connector.

    2. Disconnect the A95 stop light switch connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      A95-1 (B) - Body ground Always 11 to 14 V
      Standard resistance
      Tester Connection Condition Specified Condition
      DH-15 (STP) - A95-2 (L) Always Below 1 Ω
      DH-15 (STP) or A95-2 (L)- Body ground Always 10 kΩ or higher
      A95-3 (GND)- Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  14. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Inspect the stop light switch assembly Click here.

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

    B

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    C

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    A

    REPLACE MAIN BODY ECU

  15. INSPECT SHIFT LOCK CONTROL ECU

    A01H18CE01

    1. Disconnect the L47 shift lock control ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      11 (P2) - 3 (E) Shift lever not in P Below 1 Ω
      11 (P2) - 3 (E) Shift lever in P 10 kΩ or higher

    NG

    REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT LOCK CONTROL ECU) Click here

    OK

  16. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - SHIFT LOCK CONTROL ECU, BODY GROUND)

    A01H1PYE01

    1. Disconnect the A68 main body ECU connector.

    2. Disconnect the L47 shift lock control ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A68-2 (P) - L47-11 (P2) Always Below 1 Ω
      L47-3 (E) - Body ground Always Below 1 Ω
      A68-2 (P) or L47-11 (P2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU

  17. ECU CODE REGISTRATION


    1. Reregister the recognition codes in ECUs.


    NEXT

  18. READ VALUE USING INTELLIGENT TESTER (L CODE CHECK)


    1. Use the Data List to check if the L code certification result is functioning properly again.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      L Code Check L code certification result/NG or OK

      OK: L code certification result is normal

      NG: L code certification result is abnormal

      		 -
      OK
      OK is displayed on the tester.

    NG

    REPLACE STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) Click here

    OK

    END (SYSTEM OK)

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


    1. Replace the steering lock actuator assembly (steering lock ECU) Click here.

    2. Check that pressing the power switch causes the power source mode to change to ON (READY).

      OK
      Power switch ON (READY).

    NG

    REPLACE ID CODE BOX

    OK

    END (SYSTEM OK)

  20. READ VALUE USING INTELLIGENT TESTER (S CODE CHECK)


    1. When another electrical key control transmitter is used, use the Data List to check again if the S code certification result is functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      S Code Check S code certification result/NG or OK

      OK: S code certification result is normal

      NG: S code certification result is abnormal

      		 -
      OK
      OK is displayed on the tester.

    NG

    REPLACE CERTIFICATION ECU Click here

    OK

    END (DOOR CONTROL TRANSMITTER IS DEFECTIVE)

  21. REPLACE CERTIFICATION ECU


    1. Replace the certification ECU.

    2. Check that pressing the power switch causes the power source mode to change to ON (READY).

      OK
      Power switch ON (READY).

    NG

    REPLACE ID CODE BOX

    OK

    END (SYSTEM OK)