Controller Failure

Tests 24 Through 28:

Symptom
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 (2)
CAB GROUND CIRCUIT(S) OPEN (l)
CAB DEFECTIVE
VEHICLE ACCESSORIES CONNECTIONS OBSERVABLE DEFECT