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.
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) Delete the DTC.
(c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.
Result:
B -- Go to step 4
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