Transmission Code

Symptom:
P1687-NO COMMUNICATION WITH THE MIC

Test 1-3:

Test 4-5:

When Monitored:
Continuously with engine running.

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

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