P1687

Symptom:
P1687-NO COMMUNICATION WITH THE MIC

When Monitored:
Continuously with engine running.

Set Condition:
The DTC sets in approximately 25 seconds if no BUS messages are received form the MIC.

Test 1-2:

Test 3-6:

POSSIBLE CAUSES
- OTHER BUS PROBLEMS PRESENT
- MIC - NO COMMUNICATION
- POWERTRAIN CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS