Pinpoint Tests

PINPOINT TEST G862133p1 : CHECK THE FUEL LINES

G862133t1 : CHECK THE FUEL LINES FOR RESTRICTIONS
1
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.
Detach the fuel line from the fuel rail and from the fuel pump module.
2 Using an air line gently blow through the line checking for blockages or restrictions.
- Is a blockage or restriction evident?

->Yes
CLEAR/REPAIR the blocked or restricted fuel line and test the system for normal operation.

->No
GO to Pinpoint Test G862133t2.

G862133t2 : CHECK THE FUEL TANK LINES FOR RESTRICTIONS
1 Remove the fuel pump module locking ring. For additional information, refer to Fuel Pump and Sender Unit Fuel Pump and Sender Unit
2 Detach the fuel lines from the fuel pump module.
3 Using an air line gently blow through the tank lines checking for blockages or restrictions.
- Is a blockage or restriction evident?

->Yes
CLEAR/REPAIR the blocked or restricted fuel line and test the system for normal operation.

->No
CHECK for DTCs and symptoms indicating another cause for the problem. For additional information, refer to Electronic Engine Controls Testing and Inspection

PINPOINT TEST G862133p2 : CHECK THE FUEL SYSTEM PRESSURE

G862133t3 : CHECK THE PUMP ACTIVITY
1 Remove the rear seat cushion. For additional information, refer to Rear Seat Cushion 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 G862133t4.

->No
CHECK for DTCs. For additional information, refer to Electronic Engine Controls Testing and Inspection

G862133t4 : CHECK THE FUEL SYSTEM PRESSURE
1
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.
Make sure the vehicle is in Park and apply the parking brake.
2 Set ignition status to OFF
3
NOTE:
Place suitable absorbent material around the Schraeder valve to absorb any spillage when connecting the gauge set.
Connect adapter 310-162 and gauge assembly 310-116 to the fuel Schraeder valve. Remove the absorbent material and dispose of safely.
4 Disconnect and plug the vacuum hose from the pressure regulator.
5 Open the valve on the fuel pressure gauge and adapter 310-116/162.
6 Set ignition status to ON, engine OFF.
7 Record the fuel pressure reading.
- Is the fuel pressure 3.6 - 4.2 bar (52.2 - 60.9 lb/in2)?

->Yes
GO to Pinpoint Test G862133t5.

->No
CHECK for DTCs. For additional information, refer to Electronic Engine Controls Testing and Inspection

G862133t5 : 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 3.6 - 4.2 bar (52.2 - 60.9 lb/in2)?

->Yes
GO to Pinpoint Test G862133t6.

->No
CHECK for DTCs. For additional information, refer to Electronic Engine Controls Testing and Inspection

G862133t6 : CHECK THE FUEL SYSTEM PRESSURE WITH THE ENGINE IDLING (WHERE POSSIBLE)
1 With engine running.
- Is the fuel pressure 3.6 - 4.2 bar (52.2 - 60.9 lb/in2)?

->Yes
CHECK for DTCs and symptoms indicating another cause of the problem. For additional information, refer to Electronic Engine Controls Testing and Inspection

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