Controller Failure

Test 1-3:

Test 4-5:

Symptom
CONTROLLER FAILURE

When Monitored and Set Condition:
CONTROLLER FAILURE

When Monitored: 1. Ignition on. 2. The CAB monitors its own internal microprocessors for proper operation.

Set Condition: If an error occurs within the microprocessor, the Diagnostic Trouble Code (DTC) is set.

POSSIBLE CAUSES
CAB CONNECTOR OBSERVABLE DEFECT
CAB GROUND CIRCUIT(S) OPEN
VEHICLE ACCESSORIES CONNECTIONS OBSERVABLE DEFECT
CAB DEFECTIVE