DTC P0482: Medium Fan Control (MFC) Primary Circuit Failure
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0482 - MEDIUM FAN CONTROL (MFC) PRIMARY CIRCUIT FAILURE
| Description: | Monitors the MFC primary circuit output from the powertrain control module (PCM). The test fails if 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 through the medium speed FC relay coil to the MFC circuit). | ||
| Possible Causes: |
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| Diagnostic Aids: | When the MFCF PID reads YES, a fault is currently present. An open circuit or short to ground can only be detected when the PCM is not grounding the MFC circuit. A short to power can only be detected when the PCM is grounding the MFC circuit. During the KOEO and KOER self-test, the MFC circuit is cycled on and off. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KF . | ||