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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3599 FMI 3 (MCM) Motor Control Module Internal Injector Power Supply Failed High

DESCRIPTION:
Motor Control Module (MCM) internal injector power supply failed high.

MONITORED PARAMETER:
MCM internal injector power supply.

TYPICAL ENABLING CONDITIONS:
Always enabled

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always Enabled

TYPICAL DURATION:
2 Second

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
Derate 25%

VERIFICATION:
Engine Idle (1 minute).

PROBABLE CAUSES:
1. Doser heater.
2. Doser heater lines 1, 2, 3, or 4.
3. ACM (Aftertreatment Control Module) failure.
4. Short to battery between ACM pins 9, 15, 39, or 2 and their components.
5. Reconnect items in #4 one at a time and clear the fault code after each connection. When fault becomes active, replace the components.

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