P1477 2002 FORD F150 - Medium Cooling Fan Control Primary Circuit Failure
P1477 2002 FORD F150 Possible Causes
- Faulty Cooling Fan Relay
- Cooling Fan Relay harness is open or shorted
- Cooling Fan Relay circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How is the P1477 2002 FORD F150 code repair?Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
What is the cost to diagnose the P1477 2002 FORD F150 code
Labor: 1.0The cost to diagnose the P1477 2002 FORD F150 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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- Engine Light ON (or Service Engine Soon Warning Light)
P1477 2002 FORD F150 MeaningMonitors the medium fan control (MFC) primary circuit output from the Powertrain Control Module (PCM). The test fails if: With the MFC output commanded on (grounded), excessive current draw is detected on the MFC circuit; or with the MFC circuit commanded off, voltage is not detected on the MFC circuit (the PCM expects to detect IGN START/RUN voltage coming through the medium speed FC relay coil to the MFC circuit).
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