2021 Ford Explorer XLT, RWDFACTORY OEM SERVICE PROCEDURE

P0482 - Fan 3 Control Circuit

DTC DESCRIPTION P0482 - FAN 3 CONTROL CIRCUIT

Description:  This DTC sets when the MFC output is commanded on (grounded) and excessive current draw is detected on the MFC circuit; or when the MFC circuit is commanded off and voltage is not detected on the MFC circuit. The PCM expects to detect VPWR voltage through the medium speed fan control (FC) relay coil to the MFC circuit.
Possible Causes: 
  • MFC circuit open
  • MFC circuit short
  • VPWR circuit to the MFC relay open
  • Damaged MFC relay
Diagnostic Aids:  When the MFC_F PID reads YES, a concern is present. An open circuit or short to ground can only be detected when the PCM is not grounding the MFC circuit. A short to voltage can only be detected when the PCM is grounding the MFC circuit.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test KF.
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