94/95 Cooling fan information
94/95 Main (puller) Fan Wiring Colors
Blue - Low Speed
Black/Orange - High Speed
Black - Ground
94/95 Auxillary (pusher) Fan Wiring
Blue - Low Speed
Black - Ground
White/Red - Low Speed (not used)
Early Model Fan Wiring Colors (for swap purposes)
Brown/Orange - Low Speed
Brown/Yellow - High Speed
Black - Ground
IRCM/CCRM Pin Outs (Main Fan Relays)
Pins 1/2 (black/yellow and black/orange) - Power to HIGH speed fan windings
Pins 6/7 (2 blue wires) - Power to LOW speed fan windings
Pin 13 (red) - 12V Ignition Hot (splice with 3A fuse if using external relays for fan)
Pin 14 (tan/orange) - Signal from EEC to IRCM for low speed fan
Pin 17 (green) - Signal from EEC to IRCM for high sped fan
Auxillary Fan Relay
Located on the DS fenderwell near the cowl/brake booster.
Red - 12V Key ON
Orange/Green - Trigger (ground to run fan at all times Key ON. Switch can be installed to open/close ground for manual control)
Yellow - Power from Power Distribution Box
Blue - Power to Fan
Power Distribution Block
Fuse (need to get ##) - 60A - Main Fan
Fuse (need to get ##) - 60A - Aux Fan
Testing Fans/Wiring
1. Check fuses!!! The main fan's 60A fuse likes to melt. I recommend running it off an external mega fuse and splice into the factory wiring.
2. Perform a KOEO Test. EEC will trigger low speed, high speed, then pusher fans to activate in sequence. Note what doesn't run.
3. Hotwire fan winding(s) that did not activate in KOEO test. If fan spins, you know it's most likely a relay or wiring.
Temp Solutions/Quick Fixes
Pusher Fan
1. Ground the trigger wire (Orange/Green) to run fan at all times Key ON. Switch can be installed to open/close ground for manual control.
Main Fan
1. Unplug the ECT (engine coolant temp) sensor. This will run the low speed fan at all times Key ON. It is located on the shaft that screws into the front, passenger side of the lower intake manifold. The passenger side heater core hose connects to this shaft directly beneath the ECT sensor.
2. Cut #14 wire in the IRCM to run low speed fan at all times Key ON. Switch can be installed to open/close circuit for manual control.
3. Splice #14 wire in IRCM to #17 to disable low speed windings (fan) when high-speed windings (fan) activate. This should be done if High Speed relay works in the IRCM and Low Speed is being run off a manual or thermo-electric switch. CAUTION - Running both windings at the same time will quickly burn out the fan and possibly cause a fire hazard/wires melting/additional electrical problems.
4. Splice the main fan's low speed fan wire (Blue) into the Blue power wire for the Auxillary fan. Ground the Aux fan relay as per above. This is best done only only when the IRCM or power to the main fan fails, but the fan motor itself is still functional.
IMPORTANT NOTE: EVTM manuals that state IRCM pin out 6/7 as the high speed fan windings are wrong. 6/7 (Blue wires) run to the low speed windings on the main puller fan. The black/yellow and black/orange of pin out 1/2 are for the high speed windings.