Overall Function Check

WITH GST

Use this procedure to check the overall function of the EVAP very small leak function. During this check, a DTC might not be confirmed.

CAUTION:

Never use compressed air, doing so may damage the EVAP system.
Do not start engine.
Do not exceeded 4.12 kPa (0.042 kg/cm² , 0.6 psi).

Attach the EVAP service port adapter securely to the EVAP service port.

Fig 1: Installing EVAP Service Port Adapter
Courtesy of NISSAN MOTOR CO., U.S.A.
Set the pressure pump and a hose.
Also set a vacuum gauge via 3-way connector and a hose.
Turn ignition switch ON.
Connect GST and select MODE 8.
Using MODE 8 control the EVAP canister vent control valve (close) and vacuum cut valve bypass valve (open).
Apply pressure and make sure the following conditions are satisfied.

Pressure to be applied: 2.7 kPa (20 mmHg, 0.79 inHg)

Time to be waited after the pressure drawn in to the EVAP system and the pressure to be dropped: 60 seconds and the pressure should not be dropped more than 0.4 kPa (3 mmHg, 0.12 inHg)

If NG, go to "DIAGNOSTIC PROCEDURE ".

NOTE: For more information, refer to GST instruction manual.