Pinpoint Test G830073P8

Pinpoint Test G830073p8 : Check The Fuel System Pressure

G830073t39 : CHECK THE PUMP ACTIVITY
1. Remove the rear seat cushion.
2. Set ignition status to ON, engine OFF.
3. Listen for pump noise.

- Can the fuel pump be heard running?

->YES
GO to Pinpoint Test G830073t40.

->NO
CHECK for DTCs.

G830073t40 : CHECK THE FUEL SYSTEM PRESSURE
1. Make sure the vehicle is in Park and apply the parking brake.

WARNING: This procedure involves fuel handling. Be prepared for fuel spillage at all times and always observe fuel handling precautions. Failure to follow these instructions may result in personal injury.

2. Set ignition status to OFF
3. Connect adapter and gauge assembly 310-116 to the fuel Schraeder valve. Remove the absorbent material and dispose of safely.

NOTE: Place suitable absorbent material around the Schraeder valve to absorb any spillage when connecting the gauge set.







4. Disconnect and plug the vacuum hose from the pressure regulator.
5. Open the valve on the fuel pressure gauge 310- 116.
6. Set ignition status to ON, engine OFF.
7. Record the fuel pressure reading.

- Is the fuel pressure 3.8 bar (55.11 lb/sq.in). A slow decay to approximately 3 bar should occur over one minute.

->YES
GO to Pinpoint Test G830073t41.

->NO
CHECK for DTCs.

G830073t41 : CHECK THE FUEL SYSTEM PRESSURE WITH THE ENGINE CRANKING
1. Apply footbrake and press start button.
2. Record the fuel pressure reading when engine cranking.

- Is the fuel pressure 3.8 bar (55.11 lb/sq.in) nominal.

->YES
GO to Pinpoint Test G830073t42.

->NO
CHECK for DTCs.

G830073t42 : CHECK THE FUEL SYSTEM PRESSURE WITH THE ENGINE IDLING (WHERE POSSIBLE)
1. With engine running.

- Is the fuel pressure 3.8 bar (55.11 lb/sq.in)

->YES
CHECK for DTCs and symptoms indicating another cause of the problem.

->NO
CHECK the fuel pump module power and ground circuits.