PINPOINT TEST G532449p2 : CHECK THE FUEL LINES

Pinpoint Tests

CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00.

NOTE: When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to 3 decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

PINPOINT TEST G532449p2 : CHECK THE FUEL LINES

G532449t4 : 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 G532449t5.

G532449t5 : CHECK THE FUEL TANK LINES FOR RESTRICTIONS
1. Remove the fuel and transfer pump module locking rings.
2. Detach the fuel lines from the transfer and fuel pump modules.
3. 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
CHECK for DTCs and symptoms indicating another cause of the problem.