Overall Function Check

Use this procedure to check the overall function of the engine coolant over temperature enrichment protection 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-III

Check the coolant level in the reservoir tank and radiator.
NOTE: 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 "DIAGNOSIS PROCEDURE ".
Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to "DIAGNOSIS PROCEDURE ".

Fig 1: Identifying Coolant Level In Reservoir Tank
Courtesy of NISSAN MOTOR CO., U.S.A.
Start engine.
Make sure that cooling fan (crankshaft driven) operates.
If NG, go to "DIAGNOSIS PROCEDURE ".

With GST

Check the coolant level in the reservoir tank and radiator.
NOTE: 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 "DIAGNOSIS PROCEDURE ".
Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to "DIAGNOSIS PROCEDURE ".
Start engine and make sure that cooling fan (crankshaft driven) operates.
CAUTION: Be careful not to overheat engine.
If NG, go to "DIAGNOSIS PROCEDURE ".