System Diagnosis - A/C Condenser Fan

1. Turn ignition switch to On position and press A/C switch. If condenser fan does not operate, proceed to step 3.
2. If fan operates, press A/C switch Off. If fan stops, system is functioning properly. If fan continues to operate, proceed to step 16.
3. Disconnect fan motor connector and connect a suitable test lamp between cavities 1 and 2. If lamp lights, replace condenser fan motor.
4. If lamp does not light, connect a suitable digital ohmmeter from fan motor connector cavity 1 to ground and measure resistance. If resistance is greater than .3 ohms, repair black wire between fan motor and ground G104.
5. If resistance is less than .3 ohms, backprobe fan relay connector with test lamp from cavity 4 to ground. If lamp lights, repair open in blue/black wire.
6. If lamp does not light, disconnect fan relay connector and connect test lamp from cavity 2 to ground. If lamp does not light, repair open in red wire.
7. If lamp lights, connect an ohmmeter from fan relay connector cavity 3 to ground and measure resistance. If resistance is greater than .3 ohms, repair black wire between fuse and relay box and S117.
8. If resistance is less than .3 ohms, connect test lamp from fan relay connector cavity 1 to ground. If lamp lights, replace fan relay.
9. If lamp does not light, backprobe A/C clutch relay with test lamp from cavity 4 to ground. If lamp lights, repair open in black/white wire between clutch relay and fan relay.
10. If lamp does not light, disconnect clutch relay connector and connect an ohmmeter from cavity 3 to ground and measure resistance. If resistance is greater than .3 ohms, proceed to step 15.
11. If resistance is less than .3 ohms, connect test lamp from clutch relay connector cavity 1 to ground. If lamp lights, replace clutch relay.
12. If lamp does not light, backprobe dual pressure switch connector with test lamp from cavity 1 to ground. If lamp lights, repair open in yellow wire.
13. If lamp does not light, disconnect dual pressure switch connector and connect test lamp from cavity 2 to ground. If lamp lights, replace dual pressure switch.
14. If lamp does not light, backprobe junction block connector C7 with test lamp from cavity 1 to ground. If lamp lights, repair open in black/white wire between junction block and dual pressure switch. If lamp does not light, replace junction block.
15. Disconnect A/C controller connector and connect an ohmmeter from controller connector cavity 7 to clutch relay connector cavity 3 and measure resistance. If resistance is greater than .3 ohms, repair open in pink wire. If resistance is less than .3 ohms, problem is in compressor control system.
16. Disconnect fan relay connector. if fan continues to operate, repair short to voltage in blue/black wire.
17. If fan stops, connect test lamp from fan relay connector cavity 1 to ground. If lamp does not light, replace fan relay.
18. If lamp lights, disconnect clutch relay connector and connect test lamp from connector cavity 4 to ground. If lamp lights, repair short to voltage in black/white wire between clutch relay and fan relay.
19. If lamp does not light, connect an ohmmeter from clutch relay connector cavity 3 to ground and measure resistance. Is resistance is infinite, replace clutch relay. If resistance is less than infinite, problem is in compressor control system.