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Basic Diagnostic Procedure: Procedure

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to  CRUISE CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION  

  1. PERFORM CUSTOMER INTERVIEW  .

    Ask the customer when and how the trouble occurred using the Check List for Interview. Ref. to CRUISE CONTROL (DIAGNOSTICS)>CHECK LIST FOR INTERVIEW 

    Did you interview the customer?

    Yes  : Go to  2.

    No  : Perform the interview, and Go to  2.

  2. CHECK MALFUNCTION INDICATOR LIGHT  .
    1. Turn the ignition switch to ON.
    2. After the initial operation of the combination meter is completed, check that the malfunction indicator light illuminates.

    Does the malfunction indicator light illuminate?

    Yes  : Go to  6.

    No  : Go to  3.

  3. CHECK CRUISE INDICATOR LIGHT  .

    Make sure the cruise indicator light blinks.

    Does the cruise indicator light blink?

    Yes  : Go to  8.

    No  : Go to  4.

  4. CHECK CRUISE MAIN SWITCH OPERATION  .

    Check the CRUISE MAIN switch operation. (Check the illumination of the CRUISE indicator.)

    Is the CRUISE MAIN switch turned to ON? (Does the CRUISE indicator illuminate?)

    Yes  : Go to  5.

    No  : Go to phenomenon 1. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  5. CHECK CRUISE CONTROL SET OPERATION  .

    Check the cruise control setting operation.

    Can the cruise control be set while driving at 40 km/h (25 MPH) or more?

    Yes  : Go to  9.

    No  : Go to  8.

  6. CHECK DTC  .

    Using the Subaru Select Monitor, read all DTCs. Ref. to LAN SYSTEM (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)

    Is DTC related to engine or ABS/VDC displayed? (Current code)

    Yes  : Record the DTC. Go to  7.

    No  : Go to phenomenon 2. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  7. CHECK FREEZE FRAME DATA  .

    Using the Subaru Select Monitor, check the Freeze Frame Data or Information in Trouble State.

    Was the Freeze Frame Data or Information in Trouble State recorded?

    Yes  : Record the data. Perform the inspection according to the engine or ABS/VDC related DTC.

    No  : Perform the inspection according to the engine or ABS/VDC related DTC.

  8. CHECK CANCEL CODE  .

    Read the cancel codes using the Subaru Select Monitor. Ref. to CRUISE CONTROL (DIAGNOSTICS)>CANCEL CODE 

    NOTE:

    If the following is performed, the cancel code will be cleared. 

    • Do not turn the ignition switch to OFF after the cruise control is deactivated. 
    • Do not operate the cruise control command switch after the cruise control is deactivated. 

    Is a cancel code displayed?

    Yes  : Perform the diagnosis according to the cancel code. Ref. to CRUISE CONTROL (DIAGNOSTICS)>CANCEL CODE>LIST 

    No  : Go to  9.

  9. CHECK CRUISE CONTROL SET STATUS DISPLAY  .

    Check that the CRUISE indicator illuminates in green.

    Does the CRUISE indicator illuminate in green?

    Yes  : Go to  10.

    No  : Go to phenomenon 3. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  10. CHECK VEHICLE SPEED IS HELD WITHIN SET SPEED  .

    Make sure the vehicle speed is held within set speed.

    Is the vehicle speed kept within the setting speed ±3 km/h (±2 MPH)? (Confirm that on a level road.)

    Yes  : Go to  11.

    No  : Go to phenomenon 4. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  11. CHECK RES/+ OPERATION  .

    Check the RES/+ switch operation.

    Does the vehicle speed increase or return to set speed after RES/+ switch has been pressed?

    Yes  : Go to  12.

    No  : Go to phenomenon 5. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  12. CHECK SET/- OPERATION  .

    Check the SET/- switch operation.

    Does the vehicle speed decrease after SET/- switch has been pressed?

    Yes  : Go to  13.

    No  : Go to phenomenon 6. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  13. CANCEL OPERATION CHECK  .

    Check the CANCEL switch operation.

    Is the cruise control released after CANCEL switch has been pressed?

    Yes  : Go to  14.

    No  : Go to phenomenon 7. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  14. CHECK CRUISE CONTROL RELEASE OPERATION  .

    Check the cruise control release operation.

    Is the cruise control released after brake pedal has been depressed?

    Yes  : Go to  15.

    No  : Go to phenomenon 8. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  15. CHECK CRUISE CONTROL RELEASE OPERATION  .

    Check the cruise control release operation.

    Is the cruise control released after shifting to the neutral position?

    Yes  : Go to  16.

    No  : Go to phenomenon 9. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

  16. CHECK CRUISE CONTROL RELEASE OPERATION  .

    Check the cruise control release operation.

    Is the cruise control released after depressing the clutch pedal?

    Yes  : Finish the diagnosis.

    No  : Go to phenomenon 10. Ref. to CRUISE CONTROL (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON 

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