Overall Function Check

Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be confirmed.

WARNING: Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pressure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up pressure to escape. Then turn the cap all the way off.

WITH CONSULT-II

Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.

If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to "DIAGNOSTIC PROCEDURE ".

Fig 1: Locating Coolant Level In Reservoir Tank
Courtesy of NISSAN MOTOR CO., U.S.A.
Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to "DIAGNOSTIC PROCEDURE ".
Turn ignition switch ON.
Perform "COOLING FAN" in "ACTIVE TEST" mode with CONSULT-II.

Fig 2: CONSULT-II Display - ACTIVE TEST, COOLING FAN Display
Courtesy of NISSAN MOTOR CO., U.S.A.
If the results are NG, go to "DIAGNOSTIC PROCEDURE ".

WITH GST

Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.

If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to "DIAGNOSTIC PROCEDURE ".
Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to "DIAGNOSTIC PROCEDURE ".
Start engine.
Be careful not to overheat engine.
Set temperature control lever to full cold position.
Turn air conditioner switch ON.
Turn blower fan switch ON.
Run engine at idle for a few minutes with air conditioner operating.
Be careful not to overheat engine.
Make sure that cooling fan operates at low speed.

Fig 3: Cooling Fan Operating In Low Speed
Courtesy of NISSAN MOTOR CO., U.S.A.

If NG, go to "DIAGNOSTIC PROCEDURE ".

If OK, go to the following step.
Turn ignition switch OFF.
Turn air conditioner switch and blower fan switch OFF.
Disconnect engine coolant temperature sensor harness connector.
Connect 150Ω resistor to engine coolant temperature sensor harness connector.

Fig 4: Connecting 150 Ohm Resistor To Engine Coolant Temperature Sensor Harness Connector
Courtesy of NISSAN MOTOR CO., U.S.A.
Restart engine and make sure that cooling fan operates at higher speed than low speed.
Be careful not to overheat engine.
If NG, go to "DIAGNOSTIC PROCEDURE ".