Controller Failure

Test 1 And 2:

Tests 3 Through 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 GROUND CIRCUIT(S)
OPEN (RESISTANCE)
CAB CONNECTOR OBSERVABLE DEFECT
CAB GROUND CIRCUIT(S) OPEN (RFI)
VEHICLE ACCESSORIES CONNECTIONS OBSERVABLE DEFECT CAB DEFECTIVE