What size fuse protects the cooling fan circuit?

A 50A COOLING FAN fuse in the Engine Compartment Fuse Box (referenced to page 13-6) supplies the circuit, which is hot at all times.

How does the PCM control the cooling fan?

Per the diagram callout, when the PCM determines fan operation is required, it grounds the Cooling Fan Relay coil via circuit 229 (R/O) at PCM pin 45 (connector C185), which energizes the relay and turns on the cooling fan.

What wire feeds the cooling fan motor from the relay?

Relay output pin 87 feeds circuit 228, a dark blue (DB) wire, through connector C109 to the cooling fan motor.

How is the cooling fan motor grounded?

The fan motor grounds through circuit 57 (BK wire) via splice S113 to ground G102; grounds are detailed on page 10-2.

Where does the cooling fan relay coil get its power?

From the PCM Power Relay pin 87 in the Relay Center (page 23-1), on circuit 361 (R wire) through splice S129 and connectors C103M/C103F to relay pin 86.

Home/ Registry/ Ford/ Crown Victoria/ 1992-1997/ 1992 Ford Crown Victoria/ Photo supermotors.net/registry/media/484931

1992 Ford Crown Victoria Cooling Fan Wiring Diagram - Relay, PCM & Fuse Circuit

Wiring diagram for the engine cooling fan circuit with cooling fan relay and PCM control

‹ ›

Wiring diagram of the cooling fan circuit showing the cooling fan relay, fan motor and PCM ground control.

AI caption February 2007 · Photo 49 of 185

This document is a Ford electrical wiring schematic (EVTM-style) for the engine cooling fan circuit. It shows battery power ("HOT AT ALL TIMES") feeding a 50A COOLING FAN fuse in the Engine Compartment Fuse Box (page 13-6), which supplies circuit 37 (Y) to pin 30 of the Cooling Fan Relay, also located in the Engine Compartment Fuse Box. The relay coil (pin 86) is powered by circuit 361 (R) from the PCM Power Relay (pin 87) in the Relay Center (page 23-1), passing through splice S129 and connector C103M/C103F. When energized, relay output pin 87 sends power on circuit 228 (DB) through connector C109 to the Cooling Fan motor, which grounds through circuit 57 (BK), splice S113, and ground G102 (grounds on page 10-2). Relay control pin 85 connects via circuit 229 (R/O) through C103F/C103M and C185 to pin 45 of the Powertrain Control Module (PCM, pages 23-2, 24-2). A callout explains that when the PCM determines fan operation is required, it grounds the Cooling Fan Relay to turn the fan on. Cross-references point to Engine Controls (pages 23-2, 24-2). The diagram gives connector numbers, splice points, circuit numbers, and wire colors useful for diagnosing an inoperative electric cooling fan.

Is this accurate? Sign in to help verify it.

Frequently asked questions

What size fuse protects the cooling fan circuit?: A 50A COOLING FAN fuse in the Engine Compartment Fuse Box (referenced to page 13-6) supplies the circuit, which is hot at all times.
How does the PCM control the cooling fan?: Per the diagram callout, when the PCM determines fan operation is required, it grounds the Cooling Fan Relay coil via circuit 229 (R/O) at PCM pin 45 (connector C185), which energizes the relay and turns on the cooling fan.
What wire feeds the cooling fan motor from the relay?: Relay output pin 87 feeds circuit 228, a dark blue (DB) wire, through connector C109 to the cooling fan motor.
How is the cooling fan motor grounded?: The fan motor grounds through circuit 57 (BK wire) via splice S113 to ground G102; grounds are detailed on page 10-2.
Where does the cooling fan relay coil get its power?: From the PCM Power Relay pin 87 in the Relay Center (page 23-1), on circuit 361 (R wire) through splice S129 and connectors C103M/C103F to relay pin 86.