Jaguar XJ (X350). Manual — part 1112

Is the resistance less than 10,000 ohms?

-> 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 G251562t22.

G251562t22 : CHECK THE REM TO FUEL PUMP DRIVE CIRCUIT FOR SHORT
TO B+

1. Measure the voltage between CR73, pin 03 (R) and GROUND.

Is the voltage greater than 3 volts?

-> 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 G251562t23.

G251562t23 : CHECK THE POWER OUTPUT TO THE FUEL PUMP

1. Reconnect the REM electrical connector, CR73. 2. Turn the ignition switch to the ON position. 3.

Measure the voltage between FP04, pin 02 (Y) and GROUND.

Is the voltage greater than 5 volts?

-> Yes

INSTALL a new fuel pump module,

CLEAR the DTC. TEST the system for normal operation.

-> No

GO to Pinpoint Test G251562t24.

G251562t24 : CHECK THE POWER CIRCUIT TO THE FUEL PUMP FOR HIGH
RESISTANCE

1. Disconnect the REM electrical connector, CR73. 2. Measure the resistance between CR73, pin 04

(Y) and FP04, pin 02 (Y).

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

Contact dealer technical support for advice on possible REM failure.

PINPOINT TEST G251562p5 : P1339;
FUEL PUMP 2 DRIVE CIRCUIT
LOW/HIGH VOLTAGE

G251562t25 : CHECK THE FUEL PUMP 2 MODULE TO FUEL PUMP DRIVE
CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the fuel pump module electrical connector, CR26. 2. Disconnect the fuel pump 2

electrical connector, FP03. 3. Measure the resistance between CR26, pin 10 (R) and FP03, pin 02 (R).

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 G251562t26.

G251562t26 : CHECK THE FUEL PUMP 2 MODULE TO FUEL PUMP DRIVE
CIRCUIT FOR SHORT TO GROUND

1. Measure the resistance between CR26, pin 10 (R) and GROUND.

Is the resistance less than 10,000 ohms?

-> 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 G251562t27.

G251562t27 : CHECK THE FUEL PUMP 2 MODULE TO FUEL PUMP DRIVE
CIRCUIT FOR SHORT TO B+

1. Measure the voltage between CR26, pin 10 (R) and GROUND.

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Is the voltage greater than 3 volts?

-> 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 G251562t28.

G251562t28 : CHECK THE FUEL PUMP MODULE TO ECM MONITOR CIRCUIT
FOR HIGH RESISTANCE

1. Disconnect the battery negative terminal. 2. Disconnect the ECM electrical connector, PI01. 3.

Measure the resistance between CR26, pin 01 (WU) and PI01, pin 53 (WU).

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 G251562t29.

G251562t29 : CHECK THE FUEL PUMP MODULE TO ECM MONITOR CIRCUIT
FOR SHORT TO GROUND

1. Measure the resistance between CR26, pin 01 (WU) and GROUND.

Is the resistance less than 10,000 ohms?

-> 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 G251562t30.

G251562t30 : CHECK THE FUEL PUMP MODULE TO ECM MONITOR CIRCUIT
FOR SHORT TO B+

1. Measure the voltage between CR26, pin 01 (WU) and GROUND.

Is the voltage greater than 3 volts?

-> Yes

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

TEST the system for normal operation.

-> No

Contact dealer technical support for advice on possible fuel pump driver module failure.

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