CRUISE CONTROL SYSTEM (DIAGNOSTICS) > Basic Diagnostic Procedure

PROCEDURE

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1.CHECK MALFUNCTION INDICATOR LIGHT.

Make sure the malfunction indicator light illuminates.

Does the malfunction indicator light illuminate?

2.CHECK CRUISE INDICATOR LIGHT.

Make sure the cruise indicator light blinks.

Does the cruise indicator light blink?

3.CHECK CRUISE CONTROL MAIN SWITCH OPERATION.

Check cruise control main switch operation. (Ensure the cruise indicator light illuminates.)

Is the cruise control main switch turned on? (Does the cruise indicator light illuminate?)

Go to phenomenon 1.

4.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?

5.CHECK DTC.

Read all DTCs using the Subaru Select Monitor.

Is an engine or ABS/VDC related DTC displayed?

Perform the diagnosis according to DTC related to engine or ABS/VDC.

Go to phenomenon 2.

6.CHECK CANCEL CODE.

Using the Subaru Select Monitor, read the cancel codes.

NOTE:

• 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.

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

Is it possible to read the cancel codes?

Perform the diagnosis according to the cancel code.

7.CHECK CRUISE SET INDICATOR LIGHT.

Make sure the cruise set indicator light illuminates.

Does the cruise set indicator light illuminate?

Go to phenomenon 3.

8.CHECK VEHICLE SPEED IS HELD WITHIN SET SPEED.

Make sure the vehicle speed is held within set speed.

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

Go to phenomenon 4.

9.CHECK RESUME/ACCEL OPERATION.

Check the RESUME/ACCEL switch operation.

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

Go to phenomenon 5.

10.CHECK SET/COAST OPERATION.

Check the SET/COAST switch operation.

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

Go to phenomenon 6.

11.CANCEL OPERATION CHECK.

Check the CANCEL switch operation.

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

Go to phenomenon 7.

12.CHECK CRUISE CONTROL RELEASE OPERATION.

Check the cruise control release operation.

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

Go to phenomenon 8.

13.CHECK CRUISE CONTROL RELEASE OPERATION.

Check the cruise control release operation.

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

Go to phenomenon 9.

14.CHECK CRUISE CONTROL RELEASE OPERATION.

Check the cruise control release operation.

Is the cruise control released after depressing the clutch pedal?

Finish the diagnosis.

Go to phenomenon 10.