Basic Diagnostic Procedure: Procedure

2005 Subaru Outback i, StandardSECTION Procedure
DIAGNOSTIC PROCEDURE CHART

Step Check Yes No

CHECK MALFUNCTION INDICATOR LIGHT. 
Ensure the malfunction indicator light illuminates.
Does the malfunction indicator light illuminate? Go to step . Go to step .

CHECK CRUISE INDICATOR LIGHT. 
Ensure the cruise indicator light blinks.
Does the cruise indicator light blink? Go to step 5.  Go to step 3. 

CHECK CRUISE CONTROL MAIN SWITCH OPERATION. 
Check the 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 step 4.  Go to phenomenon 1. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>

CHECK CRUISE CONTROL SET OPERATION. 
Check the cruise control set operation.
Can the cruise control be set while driving at more than 40 km/h (25 MPH)? Go to step 6.  Go to step 5. 

PERFORM CRUISE CANCEL CONDITIONS DIAGNOSIS. 
Perform the cruise cancel conditions diagnosis.
Is DTC displayed? Go to "List of Diagnostic Trouble Code (DTC)".
< Ref. to , LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .
Go to phenomenon 2. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>

CHECK CRUISE SET INDICATOR LIGHT. 
Ensure the cruise set indicator light illuminates.
Does the cruise set indicator light illuminate? Go to step 7.  Go to phenomenon 3. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>

CHECK VEHICLE SPEED IS HELD WITHIN SET SPEED. 
Make sure the vehicle speed is held within set speed.
Is vehicle speed held within set speed +/-3 km/h (+/-2 MPH)?
(Make an inspection on a level road.)
Go to step 8.  Go to phenomenon 4. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>

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 step 9.  Go to phenomenon 5. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>

CHECK SET/COAST OPERATION. 
Check the SET/COAST switch operation.
Does the vehicle speed decrease after SET/COAST switch has been pressed? Go to step 10.  Go to phenomenon 6. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>
10 
CHECK CANCEL OPERATION. 
Check the CANCEL switch operation.
Is the cruise control released after CANCEL switch has been pressed? Go to step 11.  Go to phenomenon 7. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>
11 
CHECK CRUISE CONTROL RELEASE OPERATION. 
Check the cruise control release operation.
Is the cruise control released after brake pedal has been depressed? Go to step 12.  Go to phenomenon 8. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>
12 
CHECK CRUISE CONTROL RELEASE OPERATION. 
Check the cruise control release operation.
Is the cruise control released after shifting to the neutral position? Go to step 13.  Go to phenomenon 9. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>
13 
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. < Ref. to , DIAGNOSTIC PROCEDURE WITH PHENOMENON , Diagnostics with Phenomenon.>
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.