Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 974
FMI: 4

Description: Remote Accelerator Pedal Circuit Failed Low
Troubleshooting:
DESCRIPTION:
This fault may occur if remote accelerator pedal is programmed ON and remote pedal circuit is
shorted to ground while pin 8 of the Common Powertrain Controller (CPC) connector #2 is
grounded.
MONITORED PARAMETER:
Remote throttle sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Key on, Engine on with remote pedal activated.
POSSIBLE CAUSES:
1. CPC needs proper configuring.
2. Faulty wiring.
3. Faulty remote throttle switch.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 979
FMI: 9

Description: J1939 PTO Message Not Received this Ignition Cycle
Troubleshooting:
DESCRIPTION:
PTO message missing or not received.
MONITORED PARAMETER:
PGR001/052 PTO source address SAE J1939.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Key on
POSSIBLE CAUSES:
1. Battery voltage.
2. CPC needs proper configuring.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 986
FMI: 9

Description: J1939 CM1 Message is Missing
Troubleshooting:
DESCRIPTION:
J1939 message not received by Common Powertrain Controller (CPC).
MONITORED PARAMETER:
J1939 CM1 message.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
None
ENGINE REACTION:
None
VERIFICATION:
Key cycle
POSSIBLE CAUSES:
CPC needs proper configuring.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 986
FMI: 13

Description: J1939 CM1 SPN 986 Signal from Source #1 or #2 is Missing
Troubleshooting:
NOTICE: This fault does not indicate a Common Powertrain Controller (CPC) issue; do not
replace the CPC.
DESCRIPTION:
J1939 message missing.
MONITORED PARAMETER:
J1939 CM1 message.
TYPICAL ENABLING CONDITIONS:
Always on
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
None
ENGINE REACTION:
None
VERIFICATION:
Key cycle
POSSIBLE CAUSES:
1. Faulty Controller Area Network (CAN) line.
2. CPC needs reprogramming.
3. CPC needs proper configuration.