Trouble Shooting: Notes

SYMPTOM TROUBLE SHOOTING INDEX

Symptom		Perform Test
Premium
Radiator fan does not run at all.		RADIATOR FAN CIRCUIT TROUBLE SHOOTING "A" .
Radiator fan does not run for engine cooling, but it does run with A/C ON.		RADIATOR FAN SWITCH "A" CIRCUIT TROUBLE SHOOTING (OPEN) .
Both fans do not run at all.		RADIATOR AND CONDENSER FANS CIRCUIT TROUBLE SHOOTING "A" .
Radiator fan runs with ignition switch ON, A/C off, and engine temperature below 199°F (93°C).		RADIATOR FAN SWITCH "A" CIRCUIT TROUBLE SHOOTING (SHORT) .
Type S (A/T)
Both radiator fan and condenser fan do not run with A/C ON and when the engine coolant temperature is above 199°F (93°C).		RADIATOR AND CONDENSER FANS CIRCUIT TROUBLE SHOOTING "A" .
Radiator fan does not run at all, but condenser fan runs with A/C ON or when the engine coolant temperature is above 199°F (93°C).		RADIATOR AND CONDENSER FANS CIRCUIT TROUBLE SHOOTING "B" .
Condenser fan runs but radiator fan does not run when the engine coolant temperature is above 199°F (93°C), but both fans run with A/C ON.		Remove radiator control relay, and test. See FAN RELAYS under COMPONENT TESTS. If the relay is faulty, replace it. If the relay is OK, repair an open in the wire between the radiator fan control relay 5-pin connector, terminal No. 4 and the radiator fan motor 2-pin connector, terminal No. 2.
Both radiator fan and condenser fan do not run when the engine coolant temperature is above 199°F (93°C), but both fans run with A/C ON.		RADIATOR AND CONDENSER FANS CIRCUIT TROUBLE SHOOTING "C" .
Both radiator and condenser fans do not run when the engine coolant temperature is above 199°F (93°C), but both fans change speed with A/C ON.		RADIATOR AND CONDENSER FANS CIRCUIT TROUBLE SHOOTING "D" .
Both radiator fan and condenser fan run with ignition switch ON, with A/C OFF, and when the engine temperature is below 199°F (93°C).		RADIATOR AND CONDENSER FANS CIRCUIT TROUBLE SHOOTING "E" .
Both radiator fan and condenser fan do not run at high speed with the A/C ON.		See TROUBLE SHOOTING in appropriate AUTOMATIC A/C-HEATER SYSTEMS article.
Both radiator fan speed and condenser fan speed do not change from Low to Hi when the engine coolant temperature is above 210°F (99°C), but both fans change speed with A/C ON.		RADIATOR AND CONDENSER FANS HIGH SPEED CIRCUIT TROUBLE SHOOTING .
Condenser fan speed does not change from Low to Hi with A/C ON and the engine coolant temperature above 210°F (99°C).		See TROUBLE SHOOTING in appropriate AUTOMATIC A/C-HEATER SYSTEMS article.
Type S (M/T)
Radiator fan does not run at all.		RADIATOR FAN CIRCUIT TROUBLE SHOOTING "B" .
Radiator fan does not run for engine cooling, but it does run with A/C ON.		RADIATOR FAN SWITCH "A" CIRCUIT TROUBLE SHOOTING (OPEN) .
Radiator fan runs with ignition switch ON, A/C off, and engine temperature below 199°F (93°C).		RADIATOR FAN SWITCH "A" CIRCUIT TROUBLE SHOOTING (SHORT) .