Troubleshooting

1. If coolant temperature is low (below 181°F), proceed as follows:
a. Turn ignition switch on and check that cooling fan does not operate. If fan runs, check for faulty fan relay and/or temperature switch. Check too for separated electrical connectors or severed wire between relay and temperature switch.
b. Disconnect temperature switch wire, then check that fan rotates. If fan does not run, check fan relay, fan motor, ignition relay and temperature switch.
c. Connect temperature switch wire.
2. If coolant temperature is high (above 199°F), proceed as follows:
a. Raise engine temperature to at least 200°F, then confirm that fan rotates.
b. If fan does not rotate, replace temperature switch.