Check the 30 amp cooling fan maxifuse (labeled COOL FAN) in the underhood junction block.
If the fuse is OK, disconnect the cooling fan motor connector and connect a DVOM from terminal B wire (BLK/RED on 1991-94 models or LIGHT BLUE on 1995-98 models) to ground.
Disengage the A/C compressor clutch connector in order to prevent the air conditioning system from overpressurizing and releasing refrigerant from the pressure valve.
Start the engine and turn the air conditioning ON:
If there is voltage at the B wire, check for open at terminal A (BLK) wire to ground which would prevent circuit completion and keep an otherwise good motor from operating. If there is no open and voltage is present, the motor must be faulty. Repair the open wire or replace the faulty motor, as applicable.
If there is no voltage at the B wire, turn the engine OFFand with the DVOM still connected to terminal B, unplug the PCM connector. Install a jumper wire between the following PCM connector terminal and ground:
1991-94 models-PCM terminal J2A03 (DRK GRN/WHT)
1995 models-PCM terminal J2A03 (DRK GRN)
1996-98 models-PCM terminal J1C01 (DRK GRN)
If there is no voltage at the connector, the fan relay is faulty. If there is voltage, the PCM is bad.
The fan motor may also be checked by jumping 12 volts to the 2 wires (A = negative, B = positive). The motor should run while voltage is applied.