Jaguar XJ (X350). Manual — part 873

PINPOINT TEST G531330p23 :
ACCELERATOR PEDAL POSITION
(APP) SENSOR CIRCUIT 2

G531330t91 : CHECK THE APP SENSOR SUPPLY VOLTAGE AT THE SENSOR

1. Disconnect the APP sensor electrical connector, CR14. 2. Key on, engine off. 3. Measure the

voltage between:

APP sensor connector CR14, harness side

Battery

Pin 05

Negative terminal

Is the voltage less than 4 volts?

-> Yes

REPAIR the 5 volt supply circuit between the APP sensor and the ECM. For additional information,

refer to the wiring diagrams. CLEAR the DTC and test the system for normal operation.

-> No

GO to Pinpoint Test G531330t165.

G531330t165 : CHECK THE APP SENSOR SUPPLY CIRCUIT FOR SHORT
CIRCUIT TO POWER

1. Key off. 2. Measure the resistance between:

APP sensor connector CR14, harness side

Battery

Pin 05

Positive terminal

Is the resistance less than 10,000 ohms?

-> Yes

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

test the system for normal operation.

-> No

GO to Pinpoint Test G531330t90.

G531330t90 : CHECK THE APP SENSOR SENSING CIRCUIT 2 FOR SHORT
CIRCUIT TO GROUND

1. Measure the resistance between:

APP sensor connector CR14, harness side

Battery

Pin 04

Negative terminal

Is the resistance less than 10,000 ohms?

-> Yes

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

test the system for normal operation.

-> No

GO to Pinpoint Test G531330t89.

G531330t89 : CHECK THE APP SENSOR SENSING CIRCUIT 2 FOR SHORT
CIRCUIT TO POWER

1. Measure the resistance between:

APP sensor connector CR14, harness side

Battery

Pin 04

Positive terminal

Is the resistance less than 10,000 ohms?

-> Yes

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

test the system for normal operation.

-> No

GO to Pinpoint Test G531330t88.

G531330t88 : CHECK THE APP SENSOR SENSING CIRCUIT 2 FOR HIGH
RESISTANCE

1. Disconnect the ECM electrical connector, EC300. 2. Measure the resistance between:

APP sensor connector CR14, harness side ECM connector EC300, harness side

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Pin 04

Pin 38

Is the resistance greater than 5 ohms?

-> Yes

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

DTC and test the system for normal operation.

-> No

GO to Pinpoint Test G531330t166.

G531330t166 : CHECK THE APP SENSOR GROUND CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between:

APP sensor connector CR14, harness side ECM connector EC300, harness side

Pin 03

Pin 07

Is the resistance greater than 5 ohms?

-> Yes

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

DTC and test the system for normal operation.

-> No

INSTALL a new APP sensor.

Accelerator Pedal (19.20.01) CLEAR the DTC and test the system for normal operation.

PINPOINT TEST G531330p24 :
THROTTLE MOTOR CONTROL
CIRCUIT

G531330t93 : CHECK THE THROTTLE MOTOR TO ECM NEGATIVE CIRCUIT
FOR HIGH RESISTANCE

1. Disconnect the throttle motor electrical connector, PI26. 2. Disconnect the ECM electrical

connector, PI300. 3. Measure the resistance between:

Throttle motor connector PI26, harness side ECM connector PI300, harness side

Pin 01

Pin 74

Is the resistance greater than 5 ohms?

-> Yes

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

DTC and test the system for normal operation.

-> No

GO to Pinpoint Test G531330t94.

G531330t94 : CHECK THE THROTTLE MOTOR TO ECM POSITIVE CIRCUIT
FOR HIGH RESISTANCE

1. Measure the resistance between:

Throttle motor connector PI26, harness side ECM connector PI300, harness side

Pin 02

Pin 75

Is the resistance greater than 5 ohms?

-> Yes

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

DTC and test the system for normal operation.

-> No

INSTALL a new throttle body.

Throttle Body - VIN Range: G45704->G99999 (19.70.04) CLEAR the DTC and test the system for

normal operation.

PINPOINT TEST G531330p21 : FUEL
RAIL PRESSURE (FRP) SENSOR
CIRCUIT

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