Basic Diagnostic Procedure: Procedure
NOTE:
This information is specified for H4DOTC engine model.
CRUISE CONTROL SYSTEM DIAGNOSTICS PROCEDURE (ETC)
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK MALFUNCTION INDICATOR LIGHT. Check the malfunction indicator light illuminates. |
Does the malfunction indicator light illuminate? | Go to step 5. | Go to step 2. |
| 2 CHECK CRUISE INDICATOR LIGHT. Check the cruise indicator light blinks. |
Does the cruise indicator light blink? | Go to step 5. | Go to step 3. |
| 3 CHECK CRUISE CONTROL MAIN SWITCH OPERATION. Check the cruise control main switch operation. (Check the cruise indicator light illuminates.) |
Is the cruise control main switch set to on? (Does the cruise indicator light illuminate?) | Go to step 4. | Go to symptom 1. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 4 CHECK CRUISE CONTROL SET OPERATION. Check the cruise control set operation. |
Can the cruise control be set while driving at 40 km/h (25 MPH)? | Go to step 6. | Go to step 5. |
| 5 PERFORM CRUISE CONTROL CANCEL CONDITION DIAGNOSIS. Perform the cruise control cancel condition diagnosis. |
Are any DTC indicated? | Go to "List of DTC". < Ref. to , LIST OF DTC . > | Go to symptom 2. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 6 CHECK CRUISE SET INDICATOR LIGHT. Check the cruise set indicator light illuminates. |
Does the cruise set indicator light illuminate? | Go to step 7. | Go to symptom 3. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 7 CHECK VEHICLE SPEED IS HELD WITHIN SET SPEED. Make sure the vehicle speed is held within set speed. |
Is the vehicle speed held within set speed +/-3 km/h (+/-2 MPH)? | Go to step 8. | Go to symptom 4. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 8 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 symptom 5. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 9 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 symptom 6. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 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 symptom 7. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 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 symptom 8. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 12 CHECK CRUISE CONTROL RELEASE OPERATION. Check the cruise control release operation. |
Is the cruise control released after clutch pedal has been depressed? | Go to step 13. | Go to symptom 9. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |
| 13 CHECK CRUISE CONTROL RELEASE OPERATION. Check the cruise control release operation. |
Is the cruise control released after shifting to neutral position? | Finish the diagnosis. | Go to symptom 10. < Ref. to , SYMPTOM CHART , Diagnostic Procedure with Symptom. > |