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Basic Diagnostic Procedure: Procedure

NOTE: This information is specified for H4SO engine model.
CRUISE CONTROL SYSTEM DIAGNOSTIC PROCEDURE

Step Check Yes No
1 START DIAGNOSIS. 
  1. Perform pre-inspection. < Ref. to , INSPECTION , General Description. >
  2. Check cruise control main switch operation.
Is cruise control main switch turned ON? Go to step 2.  Go to symptom 1. < Ref. to , SYMPTOM CHART , Diagnostics Chart with Symptom. >
2 PREPARE SUBARU SELECT MONITOR.  Is the Subaru select monitor available? Go to step 3.  Go to step 4. 
3 PERFORM CRUISE CANCEL CONDITIONS DIAGNOSIS. 
Perform cruise cancel conditions diagnosis. < Ref. to , SUBARU SELECT MONITOR . >
Is trouble code indicated? Go to "List of Diagnostic Trouble Code (DTC)". < Ref. to , LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Go to step 4. 
4 CHECK CRUISE CONTROL SET OPERATION. 
Check cruise control set operation.
Can cruise control be set while driving at 40 km/h (25 MPH)? Go to step 5.  Go to symptom 2. < Ref. to , SYMPTOM CHART , Diagnostics Chart with Symptom. >
5 CHECK VEHICLE SPEED IS HELD WITHIN SET SPEED. 
Make sure vehicle speed is held within set speed.
Is vehicle speed held within set speed +/-3 km/h (+/-2 MPH) ? Go to step 6.  Go to symptom 3. < Ref. to , SYMPTOM CHART , Diagnostics Chart with Symptom. >
6 CHECK RESUME/ACCEL OPERATION. 
Check RESUME/ACCEL operation.
Does vehicle speed increase or return to set speed after RESUME/ACCEL switch has been pressed? Go to step 7.  Go to symptom 4. < Ref. to , SYMPTOM CHART , Diagnostics Chart with Symptom. >
7 CHECK SET/COAST OPERATION. 
Check SET/COAST operation.
Does vehicle speed decrease after SET/COAST switch has been pressed? Go to step 8.  Go to symptom 5. < Ref. to , SYMPTOM CHART , Diagnostics Chart with Symptom. >
8 CHECK CANCEL OPERATION. 
Check CANCEL operation.
Is cruise control released after CANCEL switch has been pressed? Go to step 9.  Go to symptom 6. < Ref. to , SYMPTOM CHART , Diagnostics Chart with Symptom. >
9 CHECK CRUISE CONTROL RELEASE OPERATION. 
Check cruise control release operation.
Is cruise control released after brake pedal has been depressed? Go to step 10.  Go to symptom 7. < Ref. to , SYMPTOM CHART , Diagnostics Chart with Symptom. >
10 CHECK CRUISE CONTROL RELEASE OPERATION. 
Check cruise control release operation.
Is cruise control released after clutch pedal has been depressed? (MT) Finish the diagnostics. Go to symptom 8. < Ref. to , SYMPTOM CHART , Diagnostics Chart with Symptom. >