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Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 7 (MCM, CPC) Engine Starter Relay Jammed

NOTE: Please see the step by step troubleshooting procedures for this specific code.

PROBABLE CAUSES:
1. Starter relay.
2. Starter relay wiring.

Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 5 (MCM) Engine Starter Relay Open Circuit
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 4 (MCM, CPC) Engine Starter Relay Circuit Failed Low
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 3 (MCM, CPC) Engine Starter Relay Shorted to High Source
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 2 (MCM) Starter Switch Inconsistent
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 2 (MCM, CPC) Low or No Voltage for the Starter Switch
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 667 FMI 3 (CPC) Short to Power on the Pin 18 Circuit of the CPC #1 Connector