Radiator Fan Motor Electrical Circuit - Trouble Diagnoses — Radiator Fan Motor (Cont'd)
LC-26flowchartApplies only to A/T models for hot areas. Distinguishes R.H.D. and L.H.D. radiator fan relay layouts; water temperature switch terminal differs for 'except for hot areas' vs 'hot areas'.
Trouble Diagnoses — Radiator Fan Motor (Cont'd)
IMPORTANT
SYMPTOM: Even though the engine is extremely hot [engine temperature is above 105°C (221°F)], the radiator fan motor does not rotate at a higher speed. (Only for A/T models for hot areas)
NOTE
This check should be performed after the engine is warmed up sufficiently.
Radiator Fan Motor — does not rotate at higher speed (A/T models for hot areas)
1
A: CHECK POWER SUPPLY. 1) Turn ignition switch "ON". 2) Check voltage between c and ground. Battery voltage should exist.
O.K.
B: CHECK GROUND CIRCUIT. 1) Turn ignition switch "OFF". 2) Disconnect radiator fan motor harness connector. 3) Check harness continuity between d and ground. Continuity should exist. If N.G., repair harness.
B: CHECK GROUND CIRCUIT. 1) Turn ignition switch "OFF". 2) Disconnect radiator fan motor harness connector. 3) Check harness continuity between d and ground. Continuity should exist. If N.G., repair harness.
N.G.
2
C: 1) Turn ignition switch "OFF". 2) Disconnect radiator fan relay. 3) Check voltage between terminal 7 and ground. Battery voltage should exist. If N.G., check harness continuity between battery + terminal and terminal 7.
O.K.
3
1) Check radiator fan relay. If N.G., replace with a new one. 2) Check harness continuity between radiator fan relay terminal e and radiator fan motor harness connector terminal c. If N.G., repair harness.
O.K.
4
Go to A (circled A)