Legacy GT LTD Sedan AWD F4-2.5L DOHC (1998)
Radiator Cooling Fan Motor: Testing and Inspection
Radiator Sub Fan With AC
Radiator Sub Fan (With A/C model only)
A: LO MODE OPERATION DETECTING CONDITION:
Condition (1):
-
Engine coolant temperature is below 89°C (192°F).
-
A/C switch is turned ON.
-
Vehicle speed is below 10 km/h (6 MPH).
Condition (2):
-
Engine coolant temperature is above 95°C (203° F)
-
A/C switch is turned OFF.
-
Vehicle speed is below 10 km/h (6 MPH).
TROUBLE SYMPTOM:
-
Radiator sub fan does not rotate at LO speed under conditions (1) and (2) above.
2A1: CHECK POWER SUPPLY TO SUB FAN MOTOR.
CAUTION: Be careful not to overheat engine during repair.
1) Turn ignition switch to OFF.
2) Disconnect connector from sub fan motor.
3) Start the engine, and warm-up it until engine coolant temperature increases over 95° (203°F).
4) Stop the engine and turn ignition switch to ON.
5) Turn A/C switch to OFF.
6) Measure voltage between sub fan motor connector and chassis ground.
Connector & terminal(F16) No.2 (+) - Chassis ground (-)
(CHECK) Is voltage more than 10 V?
(YES) Go to step 2A2.
(NO) Go to step 2A5.
2A2: CHECK GROUND CIRCUIT OF SUB FAN MOTOR.
1) Turn ignition switch to OFF
2) Measure resistance between sub fan motor connector and chassis ground.
Connector & terminal (F16) No.1 - Chassis ground:
(CHECK) Is resistance less than 5 ohms?
(YES) Go to step 2A3.
(NO) Repair open circuit in harness between sub fan motor connector and chassis ground.
2A3: CHECK POOR CONTACT.
Check poor contact in sub fan motor connector.
(CHECK) Is there poor contact in sub fan motor connector?
(YES) Repair poor contact in sub fan motor connector.
(NO) Go to step 2A4.