Operation CHARM: Car repair manuals for everyone.
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Troubleshooting

TROUBLESHOOTING

1. If coolant temperature is low (below 181°F), proceed as follows:
a. Turn ignition switch on and ensure cooling fan is not operating.
b. If fan is operating, a faulty fan relay and/or temperature switch is indicated. Check for separated electrical connectors or severed wire between relay and temperature switch.
c. Disconnect temperature switch wire, then check that fan rotates.
d. If fan does not rotate, check fan relay, fan motor, ignition relay and fuse. Check for short circuit between fan relay and temperature switch.
e. Connect temperature switch wire.
2. If coolant temperature is high (above 194°F), proceed as follows:
a. Raise engine temperature to above 194°F, then check that fan rotates.
b. If fan does not rotate, replace temperature switch.