1993 Ford Probe Cooling Fan Circuit Wiring Diagram - Relays, PCM & Fuses
Wiring diagram of the engine cooling fan circuit showing low- and high-speed fan relays, fan motor, fuse boxes, PCM and color-coded wiring.
This document is a scanned automotive wiring diagram showing the engine cooling fan circuit, filed by the uploader for a 1993 Ford Probe. Power feeds come from two sources: a 15A ENGINE fuse in the interior fuse panel (hot in start or run, see page 13-7) and a 40A COOLING FAN fuse in the engine compartment fuse box (hot at all times, see page 13-3). These feeds pass through connector C214 and splice S142 on circuit 44 BK/W and circuit 15 BK/R to two relays: the Low Speed Cooling Fan Relay (connector C167) and the High Speed Cooling Fan Relay (connector C144). Relay outputs on circuits 194 BL/O and 176 BL/W run through connector C118 to the cooling fan motor (BR/O and BR/W leads), with the motor ground on circuit 50 BK to ground G103 (see grounds page 14-1). Relay control circuits 174 R/W and 173 BL/GN run through connectors C107, splices S188 and S192, to the Powertrain Control Module (PCM, page 25-1) at connectors C246 (pin 1L) and C247 (pin 2P). Circuit 173 BL/GN also connects to the High Speed Condenser Fan Relay (via C164, page 34-3) and the Data Link Connector (DLC, C135). Wire colors, circuit numbers, connector IDs, and relay pin letters are shown throughout.
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Frequently asked questions
- What fuses power the cooling fan circuit on this diagram?
- Two fuses: the 15A ENGINE fuse in the interior fuse panel (hot in start or run, page 13-7) and the 40A COOLING FAN fuse in the engine compartment fuse box (hot at all times, page 13-3).
- What relays control the cooling fan?
- A Low Speed Cooling Fan Relay (connector C167) and a High Speed Cooling Fan Relay (connector C144). A High Speed Condenser Fan Relay (via C164, page 34-3) is also tied into circuit 173 BL/GN.
- What wire colors go to the cooling fan motor?
- Circuit 194 BL/O and circuit 176 BL/W feed connector C118, where the fan motor leads are BR/O (pin C) and BR/W (pin B). The ground side is circuit 50 BK to ground G103.
- Which PCM pins control the cooling fan relays?
- The relay control circuits run to the Powertrain Control Module at connector C246 pin 1L (circuit 174 R/W) and connector C247 pin 2P (circuit 173 BL/GN).
- Does the cooling fan circuit connect to the diagnostic connector?
- Yes — circuit 173 BL/GN branches through splice S192 to the Data Link Connector (DLC) at connector C135.
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