With Air Conditioning

If electric cooling fan does not work all the time, go to step 3). If electric cooling fan is inoperative when A/C compressor operates, start engine and turn A/C on. Disconnect fan relay connector. Fan relay is located on left inner fender panel.
Using a voltmeter, check for voltage at fan relay connector terminal No. 2. See Figure. If battery voltage does not exist, replace fan diode assembly.
Disconnect fan relay connector. Fan relay is located on left inner fender panel. Using a jumper wire with an in-line 25-amp fuse, supply battery voltage to fan relay connector terminal No. 4.
If fan operates, motor is okay. Go to next step. If fan motor does not operate, check continuity between fan relay connector terminal No. 4 and body ground connections. See Figure and Figure . If continuity exists, replace fan motor. If continuity does not exist, repair open and retest.
Turn ignition switch to the RUN position. Check continuity between fan relay connector terminal No. 5 and body ground connections. If continuity does not exist, repair open circuit. If continuity exists, go to next step.
Using a jumper wire with an in-line 25-amp fuse, jump across fan relay connector terminals No. 1 and No. 4. If fan motor operates, go to next step. If fan motor does not operate, repair fan relay fusible link.
Check for battery voltage at fan relay connector terminal No. 2. Connect a jumper wire across radiator temperature switch connector. Radiator temperature switch is located on radiator outlet tank, above lower radiator hose. If fan does not operate, replace radiator temperature switch. If fan operates, go to next step.
Check for battery voltage at fan relay connector terminal No. 2. If battery voltage is not present, replace fan diode assembly.