CAB Check Sum

Symptom:
CAB CHECK SUM

Test 1-2:

Test 3-6:

When Monitored:
Ignition On - Once

Set Condition:
When the sum of all storage bytes are not equal to the original sum stored.

POSSIBLE CAUSES
- INTERMITTENT CAB CHECK SUM DTC
- DAMAGED CAB/CAB HARNESS CONNECTOR
- FUSED OPTIONAL EQUIPMENT RELAY OUTPUT CIRCUIT OPEN
- FUSED B(+) CIRCUIT OPEN
- GROUND CIRCUIT OPEN
- ANTILOCK BRAKE CONTROLLER