Overall Function Check

WARNING: This page is about a different car, the 2004 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.

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. See Figure .
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, OVERALL FUNCTION CHECK .

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