MR2 L4-132 2164cc 2.2L DOHC (5S-FE) (1993)
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Radiator Cooling Fan Motor: Testing and Inspection
1. If coolant temperature is below 113.9°F, proceed as follows:
a. Turn ignition switch on and ensure cooling fan is not operating.
b. If fan is operating, check for faulty fan relay and/or temperature switch. Check too 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 relays, fan motor, ignition main relay, fuses and cooling fan ECU. Check also for short circuit between fan
relay and temperature switch.
e. Connect temperature switch wire.
2. If coolant temperature is above 144.5°F, proceed as follows:
a. Raise engine temperature above 144.5°F, then check that fan rotates.
b. If fan does not rotate, replace coolant temperature sensor.
