No Response From Controller Antilock Brake

Test 107 - 112:

Test 113 - 116:

SYMPTOM
NO RESPONSE FROM CAB CONTROLLER

TEST NOTE
All symptoms listed above are diagnosed using the same tests. The title for the tests will be NO RESPONSE FROM CAB CONTROLLER.

POSSIBLE CAUSES
- PCI bus open to CAB
- Fused ignition switch output circuit intermittently shorted to ground
- Fused ignition switch output circuit open
- Fused ignition switch output circuit shorted to ground
- Ground circuit open
- CAB defective - fused ignition switch output shorted to ground
- CAB defective - no response