Controller Failure

Tests 1 Through 3:

Tests 4 And 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
GROUND CIRCUIT(S) OPEN
VEHICLE ACCESSORIES CONNECTIONS OBSERVABLE DEFECT
CAB DEFECTIVE