P0480 - Fan 1 Control Circuit

2007 Ford Escape Base, 2.3 Z, FWD, AutomaticSECTION P0480 - Fan 1 Control Circuit
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P0480 - FAN 1 CONTROL CIRCUIT

Description:  Monitors the LFC primary circuit output from the powertrain control module (PCM). The test fails if the PCM grounds the LFC circuit, excessive current draw is detected on the LFC circuit, or with the LFC circuit not grounded by the PCM, voltage is not detected on the LFC circuit (the PCM expects to detect VPWR voltage coming through the low speed FC relay coil to the LFC circuit).
Possible Causes: 
  • Open or shorted LFC circuit
  • Open VPWR circuit to the low speed FC relay
  • Damaged low speed FC relay
Diagnostic Aids:  When the LFCF PID reads YES, a concern is currently present.
An open circuit or short to ground can only be detected when the PCM is not grounding the LFC circuit.
A short to voltage can only be detected when the PCM is grounding the LFC circuit.
During the KOEO and KOER self-test, the LFC circuit is cycled on and off.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST KF .
RENDER: 1.0x

NO RELATED

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