BUS System Communication

Test 1-2:

Test 3-4:

SYMPTOM
SYSTEM COMMUNICATION FAILURE

WHEN MONITORED
Ignition ON, continuously.

SET CONDITION
When the CAB does not receive a message from the instrument cluster for 10 seconds.

POSSIBLE CAUSES
- INTERMITTENT CONDITION
- ELECTRO-MECHANICAL INSTRUMENT CLUSTER DTC PRESENT
- BUS CIRCUIT OPEN
- CAB - INTERNAL FAILURE