Skyhawk L4-112 1.8L Turbo VIN J FI (1984)
Radiator Cooling Fan Motor: Testing and Inspection
Component Diagnostic Charts - PFI
Fig. 018 - WIRING DIAGRAM for Chart C-12 Coolant Fan Control Circuit with A/C. VIN J
CHART C-12, FAN CONTROL CIRCUIT
Battery voltage is supplied to the fan relay on terminal "D" and ignition to terminal "C".
Grounding relay terminal "B" will close relay and supply battery voltage to the fan motor.
Above 30 MPH the ECM will remove the ground from CKT 409. If the coolant temperature and A/C pressure switches are open the fan will stop.