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Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1639 FMI 2 (MCM) Fan Speed Error
DESCRIPTION:
This code sets when a fan speed deviation is detected.
MONITORED PARAMETER:
Fan speed sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Engine running with fan engaged.
NOTE: If 1071-5 or 647-5 active, repair the wiring between pin 91 (from the 120 pin ECM connector) and the fan and the jake brake solenoids.
PROBABLE CAUSES:
1. Coolant loss.
2. Thermostat failure.
3. Blockage in radiator and charge air cooler.
4. Fan belt condition.
5. Proper location of fan shroud.
6. Proper radiator hose condition.
7. Fan failure.
8. Short between fan speed sensor and ECM.
9. Fan drive failure.
Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1636 FMI 20 (MCM) Intake Manifold Temperature Drift (Low Box)
Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1636 FMI 4 (MCM) Intake Manifold Temperature Circuit Failed Low
Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1636 FMI 3 (MCM) Intake Manifold Temperature Circuit Failed High
Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1636 FMI 2 (MCM) Engine Air Temperature – Plausibility Fault Out of Range (Low Box)
Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1636 FMI 0 (MCM) Charge Air Cooler Low Efficiency
Detroit DD15 EPA10 (2010-13) Fault Code: SPN 1624 FMI 19 (CPC) Tachograph Vehicle Speed Signal is Erratic