Radiator Cooling Fan: Testing and Inspection

2GR-FE COOLING: COOLING FAN SYSTEM: ON-VEHICLE INSPECTION

1. INSPECT COOLING FAN SYSTEM

(a) Put the vehicle in the following conditions:

(1) The engine switch is off.

(2) The coolant temperature is less than 95°C (203°F).

(3) The battery voltage is between 9 and 14 V.

(4) The A/C switch is OFF.

(b) Connect the 400 A probe of the ammeter to terminals M+ (M) and M+ (S) of the cooling fan motor.

(c) Turn the engine switch on (IG) and wait for approximately 10 seconds. Check that the fan stops.

(d) Start the engine. Check that the fan stops with the engine idling.

HINT
* Make sure that the radiator engine coolant temperature is less than 95°C (203°F).
* Turn the A/C switch OFF.

(e) Check that the fan operates when the A/C switch is turned ON (MAX COOL and the magnetic clutch is operating).

Standard current : Without trailer hitch:





Standard current : With trailer hitch:





HINT
The coolant temperature is less than 95°C (203°F).

(f) Check that the fan operates when the engine coolant temperature sensor connector is disconnected.

Standard current : Without trailer hitch:





Standard current : With trailer hitch:





(g) After the engine is warmed up, check that the fan operates as shown in the illustration on the left.





HINT
* The coolant temperature at which the fan starts operating is approximately 95°C (203°F).
* This system can also be checked using Techstream.
* Select the following menu items: Power train / Engine / Data List / Initial Engine Coolant Temp.