Diagnostic Procedure 37 (Cont'd)
EF & EC-612flowchartSR20DET. Radiator fan operation check differs for models with air conditioner vs without air conditioner.
Radiator Fan Control Diagnostic Procedure 37
1
INSPECTION START
2
CHECK RADIATOR FAN OPERATION. [With air conditioner] 1) Start engine. 2) Set temperature lever at full cold position. 3) Turn air conditioner switch "ON". 4) Turn blower fan switch "ON". 5) Run engine at idle for a few minutes with air conditioner operating. 6) Make sure that radiator fan operates. [Without air conditioner] 1) Start engine. 2) Keep engine speed at about 2,000 rpm until engine is warmed up sufficiently. 3) Make sure that radiator fan begins to operate during warm-up.
O.K.
INSPECTION END
N.G.
3
CHECK POWER SUPPLY. 1) Turn air conditioner switch "OFF". 2) Turn blower fan switch "OFF". (Step 1) and 2) are only performed for model with air conditioner.) 3) Stop engine. 4) Disconnect radiator fan relay. 5) Turn ignition switch "ON". 6) Check voltage between terminals (2), (5) and ground. Voltage: Battery voltage
N.G.
Check the following. • Harness connectors (M11), (M104) • "L" fusible link • 30A fusible link • 10A fuse • Harness continuity between battery and radiator fan relay • Harness continuity between fuse and radiator fan relay If N.G., repair harness or connectors.
Check the following. • Harness connectors (M11), (M104) • "L" fusible link • 30A fusible link • 10A fuse • Harness continuity between battery and radiator fan relay • Harness continuity between fuse and radiator fan relay If N.G., repair harness or connectors.
O.K.
4
CHECK GROUND CIRCUIT. 1) Turn ignition switch "OFF". 2) Disconnect radiator fan motor-1 harness connector and radiator fan motor-2 harness connector. 3) Check harness continuity between terminal (6) and terminal (1), terminal (9) and body ground. Continuity should exist.
N.G.
Repair harness or connectors.
O.K.
5
(A) — continues to next page