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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 1071 FMI 5 (MCM, CPC) Fan Stage 2 Circuit Failed Open

DESCRIPTION:
Fan circuit failed open.

MONITORED PARAMETER:
Fan control solenoid.

TYPICAL ENABLING CONDITIONS:
Always enabled

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always enabled

TYPICAL DURATION:
2 seconds

DASH LAMPS:
None

ENGINE REACTION:
None

VERIFICATION:
Ignition cycle

NOTE: If codes 647-5, 1072-5, or 1071-5 active, repair wiring between pins 91 of the 120-pin MCM connector and the fan and the Jake brake Solenoids.

PROBABLE CAUSES:
1. Wiring between the fan control solenoid and 120-pin MCM connector.
2. Fan control solenoid failure.

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