Multiplex Communication System

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

HOW TO PROCEED WITH TROUBLESHOOTING
HINT: Troubleshoot in accordance with the procedures.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. DTC CHECK
(a) Check for DTCs and make a note of the code that is output Reading and Clearing Diagnostic Trouble Codes.
(b) Delete the DTC.
(c) Check if the DTC is output once again when the problem symptom is simulated based on the noted code.
(1) When no code is output (symptom check and simulation are possible), proceed to A.
(2) When a code is output, proceed to B.
B -- Go to step 4
A -- Continue to next step.
3. PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM
(a) Terminals of ECU Multiplex Communication System

4. ADJUST, REPAIR OR REPLACE
NEXT -- END