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ENTRY AND START SYSTEM(for Start Function) Steering Lock does not Lock

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DTC Code DTC Name
  Steering Lock does not Lock
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DESCRIPTION

The steering lock ECU (steering lock actuator or upper bracket assembly) activates the steering lock motor and moves the lock bar into the steering column to lock the steering.

When the steering lock is operating, the steering may not lock when the lock bar is not aligned with the lock hole of the steering column. In this case, the steering can be locked by turning the steering wheel a little, as is done for a vehicle with a mechanical key, to change the position of the lock hole.

Table 1. Related Data List and Active Test Items
Problem Symptom Data List and Active Test
Steering Lock does not Lock
  • Entry&Start

  • Lock Request Receive

  • S Code Check

  • L Code Check

  • Steering Lock


  • Main Body

  • FL Door Courtesy SW


  • Power Source Control

  • Shift P Signal
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WIRING DIAGRAM

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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.

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

  • 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. Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

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

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

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

  • Before replacing the steering lock ECU (steering lock actuator or upper bracket assembly), certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU), refer to the Service Bulletin.

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PROCEDURE


  1. Click here

    READ VALUE USING GTS (LOCK REQUEST RECEIVE)


    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.


      1. Body Electrical > Entry&Start > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Lock Request Receive Status of steering lock command from certification ECU (smart key ECU assembly) OK or NG

        OK: Lock request signal received within 10 seconds of any of the doors being opened with shift state park (P) and power switch off.

        NG: Except above

        		 If OK is not displayed even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.



      1. Body Electrical > Entry&Start > Data List
        Tester Display
        Lock Request Receive




      OK
      Within 10 seconds of any of the doors being opened with shift state park (P) and power switch off, the Data List item changes to "OK".
      Result
      Proceed to
      OK
      NG

  2. Click here

    READ VALUE USING GTS (S CODE CHECK)


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


      1. Body Electrical > Entry&Start > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        S Code Check S code verification result 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 steering cannot be locked.

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



      1. Body Electrical > Entry&Start > Data List
        Tester Display
        S Code Check




      OK
      OK is displayed on the GTS.
      Tip:

      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 is replaced, but is not registered.

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

      Result
      Proceed to
      OK
      NG

  3. Click here

    READ VALUE USING GTS (L CODE CHECK)


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


      1. Body Electrical > Entry&Start > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        L Code Check L code verification result 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 steering lock ECU (steering lock actuator or upper bracket assembly) is not registered, or the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly) is malfunctioning.

        • The steering cannot be locked.

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



      1. Body Electrical > Entry&Start > Data List
        Tester Display
        L Code Check




      OK
      OK is displayed on the GTS.
      Tip:

      Reasons for verification failure:


      • The steering lock ECU (steering lock actuator or upper bracket assembly) or ID code box (immobiliser code ECU) is malfunctioning.

      • There is a problem with the communication between ECUs.

      • An ECU is replaced, but is not registered.

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

      Result
      Proceed to
      OK
      NG

  4. Click here

    CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) - POWER SUPPLY AND BODY GROUND)


    1. Disconnect the steering lock ECU (steering lock actuator or upper bracket assembly) G22 connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G22-1 (GND) - Body ground Always Below 1 Ω
      Note:

      If the result is not as specified, check for looseness in the ground cable connection.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G22-7 (B) - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) (MOTOR ACTIVATION COMMAND SIGNAL)


    1. Reconnect the steering lock ECU (steering lock actuator or upper bracket assembly) connector.

    2. B004WM1C07
      *a

      Component with harness connected

      (Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly))
      *b Steering Lock Motor not Operating
      *c Steering Lock Motor Operating

      Using an oscilloscope, check the waveform.

      OK
      Tester Connection Tool Setting Condition Specified Condition
      G22-3 (IGE) - G22-1 (GND) 2 V/DIV., 200 ms./DIV.

      Any door opened when conditions below met, and then steering lock motor activated:


      • Shift state park (P)

      • Steering lock unlocked in advance by carrying key and turning power switch on (IG)

      • After above conditions met, power switch turned off

      Pulse generation

      (See waveform)
      Tip:

      • When taking measurements when the lock motor is stopped, it is not necessary to perform any operations.

      • In order to take measurements when the lock motor is operating, perform either of the following operations:


        • To unlock the steering, carry the key and turn the power switch on (ACC) or on (IG).

        • To lock the steering, turn the power switch off with the shift state park (P), and then open a door.

      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)Click here

    • NGClick here
  6. Click here

    CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))


    1. Disconnect the G22 steering lock ECU (steering lock actuator or upper bracket assembly) connector.

    2. Disconnect the G71 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G22-3 (IGE) - G71-25 (SLR+) Always Below 1 Ω
      G22-3 (IGE) or G71-25 (SLR+) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)


    1. Reconnect the steering lock ECU (steering lock actuator or upper bracket assembly) connector.

    2. B004S6RC82
      *a

      Component with harness connected

      (Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly))

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G22-3 (IGE) - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    • NG

      REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)Click here

  8. Click here

    CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)


    1. Replace the steering lock ECU (steering lock actuator or upper bracket assembly) with a new one.

      Click here

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


      1. Body Electrical > Entry&Start > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        L Code Check

        L code verification result

        Tip:

        This indicates the certification result of the certification codes of the ID code box (immobiliser code ECU) and hybrid vehicle 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 steering lock ECU (steering lock actuator or upper bracket assembly) is not registered, or the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly) is malfunctioning.

        • The steering cannot be locked.

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



      1. Body Electrical > Entry&Start > Data List
        Tester Display
        L Code Check




      OK
      OK is displayed on the GTS.
      Result
      Proceed to
      OK
      NG

    • OK

      END (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) WAS DEFECTIVE)

    • NG

      REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

  9. Click here

    CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Replace the certification ECU (smart key ECU assembly) with a new one and perform registration again.

      Tip:

      Refer to Service Bulletin.

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


      1. Body Electrical > Entry&Start > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        S Code Check S code verification result 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 steering cannot be locked.

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



      1. Body Electrical > Entry&Start > Data List
        Tester Display
        S Code Check




      OK
      OK is displayed on the GTS.
      Result
      Proceed to
      OK
      NG

    • OK

      END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

    • NG

      REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

  10. Click here

    READ VALUE USING GTS (FL DOOR COURTESY SW)


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


      1. Body Electrical > Main Body > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        FR Door Courtesy SW Courtesy light switch RH signal OFF or ON

        OFF: Front door RH closed

        ON: Front door RH open

        		 for RHD
        FL Door Courtesy SW Courtesy light switch LH signal OFF or ON

        OFF: Front door LH closed

        ON: Front door LH open

        		 for LHD




      1. Body Electrical > Main Body > Data List
        Tester Display
        FR Door Courtesy SW
        FL Door Courtesy SW





      OK
      The Data List item changes in accordance with the opening and closing of the driver door.
      Result
      Proceed to
      OK
      NG

  11. Click here

    READ VALUE USING GTS (SHIFT P SIGNAL)


    1. Move the shift state park (P).

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


      1. 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.



      1. Body Electrical > Power Source Control > Data List
        Tester Display
        Shift P Signal Pulse




      OK
      Normal2 is displayed on the GTS.
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      GO TO ENTRY AND START SYSTEM (for Start Function) (PROBLEM SYMPTOMS TABLE)Click here

  12. Click here

    READ VALUE USING GTS (STEERING LOCK)


    1. Check that the steering is unlocked.

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


      1. Body Electrical > Entry&Start > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Steering Lock Steering lock ECU (steering lock actuator or upper bracket assembly) lock confirmation status Unset or Set

        Unset: Lock not confirmed

        Set: Lock confirmed

        		 When Unset is displayed, the steering is not locked.



      1. Body Electrical > Entry&Start > Data List
        Tester Display
        Steering Lock




      OK
      Set is displayed on the GTS.
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)Click here

  13. Click here

    READ VALUE USING GTS (LOCK REQUEST RECEIVE)


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

      Tip:

      Refer to Service Bulletin.

    2. Perform registration.

      Tip:

      Refer to Service Bulletin.

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


      1. Body Electrical > Entry&Start > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Lock Request Receive Status of steering unlock command from certification ECU (smart key ECU assembly) OK or NG

        OK: Unlock request signal received within 10 seconds of power switch being turned on (IG) or on (ACC) or of a hybrid control system start operation being performed

        NG: Power switch not turned on (IG) or on (ACC) and hybrid control system start operation not being performed

        • The hybrid control system cannot be started when an unlock request signal cannot be received.

        • If OK is not displayed even though the steering unlock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.



      1. Body Electrical > Entry&Start > Data List
        Tester Display
        Lock Request Receive




      OK
      Within 10 seconds of any of the doors being opened with shift state park (P) and power switch off, the Data List item changes to "OK".
      Result
      Proceed to
      OK
      NG

    • OK

      END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

    • NG

      REPLACE ID CODE BOX (IMMOBILISER CODE ECU)