Evap two way valve testing

EVAP TWO WAY VALVE TESTING

1. Remove the fuel filler cap.

A Vacuum/Pressure Gauge
B Vacuum Pump/Gauge
C T piece

2. Remove the vapour line from the fuel tank and connect to T piece from vacuum gauge and vacuum pump as shown.
3. Apply vacuum slowly and continuously while watching the gauge.
   Vacuum should stabilise momentarily at 5 to 15 mmHg.

• If vacuum stabilises (i.e. valve opens) below 5 mmHg or above 15 mmHg, install a new valve and retest.

A Pressure side

4. Move vacuum pump hose from vacuum to pressure fitting, and move vacuum gauge hose from vacuum to pressure side as shown.
5. Slowly pressurise the vapour line while watching the gauge.
   Pressure should stabilise at 10 to 35 mmHg.

• If pressure momentarily stabilises (i.e. valve opens) between 10 to 35 mmHg, the valve is OK.

• If pressure stabilises (i.e. valve opens) below 10 mmHg or above 35 mmHg, install a new valve and retest.

CATALYST OVERHEAT SENSOR

Remove

1. Raise vehicle on a ramp.
2. Remove 4 securing screws and remove lower heat shield from catalyst.

A Upper height shield
B Sensor connector – 2P
C Harness clips
D Catalyst overheat sensor

3. Raise upper heat shield, move rearwards and retain against floor panel.
4. Remove bolt securing connector clip and disconnect sensor 2P connector.
5. Release harness from 4 clips.
6. Unscrew union and withdraw overheat sensor from catalyst.

Refit

1. Apply anti-seize compound to overheat sensor thread and tighten to 45 Nm.
2. Fit heat shields and tighten screws to 10 Nm.
3. Connect harness and clip to floor.