Tests KF: Fan Control (FC) Relays
PINPOINT TEST KF: FAN CONTROL (FC) RELAYS
This pinpoint test is intended to diagnose the following:
^ LFC MFC HFC relays
^ harness circuits: HFC LFC MFC VPWR
^ powertrain control module (PCM) (12A650)
Three Speed Fan Operation
Although the PCM output circuits are called low, medium and high fan control (FC), cooling fan operation is controlled by a combination of these outputs.
Refer to Engine Control Components
Reference:
Reference:
HFC Relay Connector