How to Proceed with Troubleshooting

CRUISE CONTROL: CRUISE CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use the following procedures to troubleshoot the cruise control system.
- *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. PROBLEM SYMPTOM CONFIRMATION
NEXT -- Continue to next step.
3. CHECK MULTIPLEX COMMUNICATION SYSTEM*
Refer to HOW TO PROCEED WITH TROUBLESHOOTING How to Proceed With Troubleshooting.
(a) Check for output DTCs.
Result:





HINT:
The ECM of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system.

B -- PROCEED TO "MULTIPLEX COMMUNICATION SYSTEM"
A -- Continue to next step.
4. CHECK CAN COMMUNICATION SYSTEM*
Refer to the PRECAUTION Service Precautions.
(a) Check for output DTCs.
Result:





HINT:
The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

B -- PROCEED TO "CAN COMMUNICATION SYSTEM"
A -- Continue to next step.
5. DTC CHECK AND CLEAR*
Refer to the DTC CHECK / CLEAR Cruise Control System.
NEXT -- Continue to next step.
6. DTC CHECK (OTHER THAN MPX AND CAN SYSTEM DTC)*
Result:






A -- GO TO STEP 8
B -- Continue to next step.
7. DTC CHART
Refer to the DIAGNOSTIC TROUBLE CODE CHART Cruise Control System.
NEXT -- GO TO STEP 11
8. PROBLEM SYMPTOM CONFIRMATION
Result:






A -- GO TO STEP 10
B -- Continue to next step.
9. SYMPTOM SIMULATION
Refer to the ELECTRONIC CIRCUIT INSPECTION PROCEDURE Electronic Circuit Inspection Procedure.
NEXT -- Go to step 8
10. PROBLEM SYMPTOMS TABLE
Refer to the PROBLEM SYMPTOMS TABLE Cruise Control System.
NEXT -- Continue to next step.
11. CIRCUIT INSPECTION
NEXT -- Continue to next step.
12. TERMINALS OF ECM
Refer to TERMINALS OF ECM Cruise Control System.
NEXT -- Continue to next step.
13. IDENTIFICATION OF PROBLEM
NEXT -- Continue to next step.
14. REPAIR OR REPLACE
NEXT -- Continue to next step.
15. CONFIRMATION TEST
NEXT -- END