DESCRIPTION:
Signal not available on the CPC DPF switch source address.

MONITORED PARAMETER:
CM1 DPF source add SAE J1939.

TYPICAL ENABLING CONDITIONS:
1. Key on
2. Engine off

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

ENGINE REACTION:
None

VERIFICATION:
Cycle the key to power down, then cycle the key back on.

NOTE: Verify CPC group PGR001 parameter CM1 source add SAE J1939 is set to 49. If set properly, check other computers on the truck for faults.