How To Proceed With Troubleshooting

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use this procedure to troubleshoot the multiplex communication system.
- The intelligent tester should be used in step 2.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. CHECK FOR DTC
(a) Check for DTCs and note any codes that are output.
(b) Clear the DTCs.
(c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.
Result:






B -- GO TO DTC CHART
A -- Continue to next step.
3. OVERALL ANALYSIS AND TROUBLESHOOTING
(a) Terminals of ECU Multiplex Communication System.
NEXT -- Continue to next step.
4. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.
5. CONFIRMATION TEST
NEXT -- END