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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 4193 FMI 2 (MCM) Coolant Inlet Temperature Not Plausible

DESCRIPTION:
Coolant inlet temperature not plausible.

MONITORED PARAMETER:
Coolant inlet and coolant outlet temperature sensors.

TYPICAL ENABLING CONDITIONS:
1. Engine speed 500 – 2500 rpm.
2. Coolant temperature is greater than 65°C (149°F).
3. Battery voltage is greater than 11 vDC.
4. Run engine greater than 60s.

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always enabled

TYPICAL DURATION:
30

DASH LAMPS:
MIL

VERIFICATION:
1. Start engine.
2. Warm up such that coolant temperature is greater than 65°C (149°F).
3. Ensure battery voltage is greater than 11 vDC and engine has been running for at least 1 minute.
4. Bring engine to idle speed.
5. Being certain that it is greater than 500 rpm.

NOTE: If there are any cooling system faults or conditions, repair those first.

PROBABLE CAUSES:
1. Engine coolant thermostat.
2. Inlet and/or outlet coolant temperature sensor.
3. Inlet and/or outlet coolant temperature sensor connector/harness.

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