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The Steering Lock Does Not Operate

CAUTION: When the keyless access CM or steering lock CM is replaced, registration of the immobilizer is required. For the relevant procedures, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. Contact an authorized Subaru Dealership.
  1. CHECK DTC. 

    Read the DTC of [Keyless Access with Push Button Start] using the Subaru Select Monitor. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Diagnostic Trouble Code (DTC) .

    Is DTC displayed?

    • Yes  : Perform the diagnosis according to the corresponding DTC.
    • No  : Go to 2. 
  2. CHECK DATA MONITOR. 
    1. Using the Subaru Select Monitor, display the data monitor [Driver's door SW input] of [Body Control]. Ref. to BODY CONTROL(DIAGNOSTICS)>Data Monitor .
    2. Read the data when opening and closing the driver's door.

    Does the data change from ON to OFF according to the opening and closing?

    • Yes  : Go to 3. 
    • No  : Inspect door switch circuit.
  3. CHECK DATA MONITOR. 

    Using the Subaru Select Monitor, display the data monitor [Shift P Signal] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .

    Is the status displayed correctly when the shift lever is shifted from P to other than P?

    • Yes  : Go to 4. 
    • No  : Check the P range switch and harness.
  4. CHECK DATA MONITOR. 

    Using the Subaru Select Monitor, display the data monitor [Code collation result between smart ECM and ID code box] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .

    Is the status normal?

  5. CHECK DATA MONITOR. 

    Using the Subaru Select Monitor, display the data monitor [Code collation result between steering locked ECM and ID code box] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .

    Is the status normal?

  6. CHECK DATA MONITOR. 
    1. Using the Subaru Select Monitor, display the data monitor [Steering lock lock/unlock command reception history] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .
    2. While in possession of the access key, perform engine start operations, and read data within 10 seconds after starting.

    Is data displayed as ON?

  7. CHECK STEERING LOCK CM. 

    Using a tester, measure the waveform between steering lock CM terminals immediately after the following operations.

    Perform ignition ON, driver's side door close → shift lever "P" range, ignition OFF, and close → open the driver's side door.

    Connector & terminal 

    (B424) No. 3 - (B424) No. 1:

    Is the waveform immediately after opening the driver's side door abnormal?

  8. CHECK WIRING HARNESS (OPEN). 
    1. Disconnect the keyless access CM connector and the steering lock CM connector.
    2. Using a tester, check continuity between the keyless access CM connector and steering lock CM connector.

      Connector & terminal 

      (B424) No. 3 - (B574) No. 29:

    Is there continuity?

    • Yes  : Go to 9. 
    • No  : Repair or replace the open circuit of harness.
  9. CHECK WIRING HARNESS (OPEN). 

    Using a tester, check continuity between the keyless access CM connector and chassis ground.

    Connector & terminal 

    (B572) No. 11 - Chassis ground:

    Is there continuity?

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