Detroit Diesel
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 656 FMI 7 (MCM) Injector Cylinder #6 Needle Control Valve Stuck Open
Posted by Diezel Solutions on
DESCRIPTION:Injector cylinder #6 needle control valve stuck open. MONITORED PARAMETER:Injector cylinder #6 needle control valve. TYPICAL ENABLING CONDITIONS:Engine rpm = idle or higher. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:Derate 25% VERIFICATION:Engine Idle: One minute. NOTE: Submit completed diagnostics with warranty claim. PROBABLE CAUSES:1. Bent pins.2. Spread pins.3. damaged connector seal.4. Faulty rear fuel injector harness.5. Faulty injector with the out-of-range resistance.6. Corroded pins.7. Unseated pins.8. Damaged wire.9. Faulty MCM. Detroit DD16 GHG14 (2014-16) Fault Code: SPN 656 FMI 6 (MCM) Injector Cylinder #6 Needle Control Valve Shorted Circuit Detroit...
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
Posted by Diezel Solutions on
NOTE: The common powertrain controller (CPC) digital outputs have the same SPN as some motor control module (MCM) faults. The diagnostic service tool 7X makes the distinction between the MCM and CPC when diagnosing a fault. NOTE: This diagnostic is typically started pin – short to power on the pin 18 circuit of the CPC #1 connector. NOTE: There is a short to power on pin 18 of the CPC4 #1 connector. Detroit DD16 GHG14 (2014-16) Fault Code: SPN 656 FMI 7 (MCM) Injector Cylinder #6 Needle Control Valve Stuck Open Detroit DD16 GHG14 (2014-16) Fault Code: SPN 656 FMI...
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 14 (MCM, CPC) Electronic Starter Fault or Motor Control Module Internal Failure
Posted by Diezel Solutions on
NOTE: Please see the step by step troubleshooting procedures for this specific code. NOTE: If active and engine starts, re-start the engine 3 times. If fault doesn’t come back, clear the codes and return vehicle. NOTE: If active, the failure is probably a failed MCM (Engine ECM). Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 7 (MCM, CPC) Engine Starter Relay Jammed 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...
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 18 (MCM, CPC) Starter Relay – Low Resistance
Posted by Diezel Solutions on
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 14 (MCM, CPC) Electronic Starter Fault or Motor Control Module Internal Failure Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 7 (MCM, CPC) Engine Starter Relay Jammed 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...
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 677 FMI 2 (MCM, CPC) Low or No Voltage for the Starter Switch
Posted by Diezel Solutions on
NOTE: Please see the step by step troubleshooting procedures for this specific code. PROBABLE CAUSES:1. If 677-2 inactive, clear the code, start the engine, and if it doesn’t come back release the vehicle.2. Wiring on the MCM 21-pin connector between pin 20 and ground. Should have 11.5 or more volts.3. Wiring on the CPC connector #1 between pin 18 and ground. If less than 11.5 Volts, repair wiring. 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 Detroit DD16 GHG14 (2014-16) Fault Code: SPN 656...