Jaguar XJ (X350). Manual — part 1120

-> Yes

REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC, test

the system for normal operation.

-> No

GO to Pinpoint Test G532449t41.

G532449t41 : CHECK THE FPDM TO FUEL PUMP NEGATIVE CIRCUIT FOR
HIGH RESISTANCE

1. Disconnect the FPDM electrical connector, FP26. 2. Measure the resistance between:

Fuel pump module connector FP08, harness side FPDM connector FP26, harness side

Pin 03

Pin 02

Is the resistance greater than 5 ohms?

-> Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the

DTC, test the system for normal operation.

-> No

GO to Pinpoint Test G532449t42.

G532449t42 : CHECK THE FPDM TO FUEL PUMP POSITIVE CIRCUIT FOR
HIGH RESISTANCE

1. Measure the resistance between:

Fuel pump module connector FP08, harness side FPDM connector FP26, harness side

Pin 04

Pin 01

Is the resistance greater than 5 ohms?

-> Yes

REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the

DTC, test the system for normal operation.

-> No

FOR FPDM power and ground tests, GO to Pinpoint Test G532449p9.

PINPOINT TEST G532449p8 : CHECK
THE FUEL SYSTEM PRESSURE

G532449t19 : CHECK THE PUMP ACTIVITY

1. Remove the rear seat cushion.

Rear Seat Cushion (76.70.37) 2. Key on, engine off. 3. Listen for pump noise.

Can the fuel pump be heard running?

-> Yes

GO to Pinpoint Test G532449t36.

-> No

CHECK for DTCs.

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.0L engines and

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.5L and 4.2L engines.

G532449t36 : 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.

NOTE:

The fuel pressure can be tested using the Jaguar approved diagnostic system datalogger facility,

or by the use of a suitable gauge from the schraeder connector on the special tool fitted to the

fuel rail.

Fuel System Pressure Check

Apply the parking brake. 2. Make sure the gear selector is in the NEUTRAL position for vehicles fitted

with manual transmission, PARK position for vehicles fitted with automatic transmission. 3. Connect

a suitable gauge to the fuel Schraeder valve. 4. Disconnect and plug the vacuum hose from the

pressure regulator. 5. Key on, engine off.

Make sure there are no leaks from the gauge connections 6. Record the fuel pressure reading.

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Is the fuel pressure between 4 and 5 bar (58.01 and 72.51 lb/in²)?

-> Yes

GO to Pinpoint Test G532449t37.

-> No

CHECK for DTCs.

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.0L engines and

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.5L and 4.2L engines.

G532449t37 : CHECK THE FUEL SYSTEM PRESSURE WITH THE ENGINE
CRANKING

1. Key in start position. 2. Record the fuel pressure reading.

Is the fuel pressure 4.5 bar (65.25 lb/in²)?

-> Yes

GO to Pinpoint Test G532449t38.

-> No

CHECK for DTCs.

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.0L engines and

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.5L and 4.2L engines.

G532449t38 : CHECK THE FUEL SYSTEM PRESSURE WITH THE ENGINE
IDLING (WHERE POSSIBLE)

1. Key on, engine running.

Is the fuel pressure 4.5 bar (65.25 lb/in²)?

-> Yes

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

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.0L engines and

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.5L and 4.2L engines.

-> No

CHECK the fuel pump power and ground circuits, GO to Pinpoint Test G532449p6.

For V6 and V8 vehicles without supercharger and GO to Pinpoint Test G532449p4.

For V8 vehicles with supercharger.

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.

Fuel Pump Module - 2.7L V6 - TdV6 (19.45.08) 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.

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.0L engines and

Electronic Engine Controls - VIN Range: G45704->G99999 For vehicles with 3.5L and 4.2L engines.

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