Jaguar XJ (X350). Manual — part 948

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 G531332t90.

G531332t90 : CHECK THE APP SENSOR SENSING CIRCUIT FOR SHORT
CIRCUIT TO GROUND

1. Key off. 2. 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.

TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t91.

G531332t91 : CHECK THE APP SENSOR SUPPLY VOLTAGE AT THE SENSOR

1. Reconnect the ECM electrical connector, PI300. 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

GO to Pinpoint Test G531332t92.

-> No

INSTALL a new APP sensor.

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

G531332t92 : CHECK THE APP SENSOR SUPPLY VOLTAGE CIRCUIT FOR
HIGH RESISTANCE

1. Key off. 2. Disconnect the ECM electrical connector, PI300. 3. Measure the resistance between:

APP sensor connector CR14, harness side ECM connector PI300, harness side

Pin 05

Pin 19

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

Check the ECM power supplies (recheck DTCs. P1104 may be flagged).

PINPOINT TEST G531332p24 :
THROTTLE MOTOR CONTROL
CIRCUIT MALFUNCTION

G531332t93 : CHECK THE THROTTLE MOTOR - TO ECM CIRCUIT FOR HIGH
RESISTANCE

1. Key off. 2. Disconnect the throttle motor electrical connector, PI26. 3. Disconnect the ECM

electrical connector, PI300. 4. Measure the resistance between:

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

Pin 02

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. TEST the system for normal operation.

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-> No

GO to Pinpoint Test G531332t94.

G531332t94 : CHECK THE THROTTLE MOTOR + TO ECM CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between:

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

Pin 01

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. TEST the system for normal operation.

-> No

INSTALL a new throttle body.

Throttle Body - 4.2L NA V8 - AJV8/3.5L NA V8 - AJV8, VIN Range: G45704->G99999 (19.70.04)

Throttle Body - 4.2L SC V8 - AJV8, VIN Range: G45704->G99999 (19.70.04) CLEAR the DTC. TEST the

system for normal operation.

PINPOINT TEST G531332p25 : SENSOR
SUPPLY VOLTAGE MALFUNCTION,
HIGH/LOW VOLTAGE

G531332t95 : CHECK THE SUPPLY VOLTAGE AT THE MANIFOLD ABSOLUTE
PRESSURE (MAP) SENSOR

1. Disconnect the MAP sensor electrical connector, PI301. 2. Key on, engine off. 3. Measure the

voltage between:

MAP sensor connector PI301, harness side

Battery

Pin 02

Negative terminal

Is the voltage less than 5 volts?

-> Yes

REPAIR the circuit between the MAP sensor and battery. This circuit includes splice PIS84. For

additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal

operation.

-> No

GO to Pinpoint Test G531332t96.

G531332t96 : CHECK THE SUPPLY VOLTAGE AT THE FUEL RAIL PRESSURE
(FRP) SENSOR

1. Disconnect the FRP sensor electrical connector, PI28. 2. Measure the resistance between:

FRP sensor connector PI28, harness side

Battery

Pin 01

Negative terminal

Is the voltage less than 5 volts?

-> Yes

REPAIR the circuit between the FRP sensor and battery. This circuit includes splice PIS84. For

additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal

operation.

-> No

CHECK for DTCs indicating a sensor fault. Refer to the DTC index.

PINPOINT TEST G531332p26 : SENSOR
GROUND CIRCUITS OPEN CIRCUIT

G531332t115 : CHECK THE SENSOR GROUND AT THE MANIFOLD ABSOLUTE
PRESSURE (MAP) SENSOR (VEHICLES WITH SUPERCHARGER)

1. Key off. 2. Disconnect the ECM electrical connector, PI300. 3. Disconnect the MAP sensor electrical

connector, PI301. 4. Measure the resistance between:

MAP sensor electrical connector PI301, harness side ECM connector PI300, harness side

Pin 04

Pin 12

Is the resistance greater than 5 ohms?

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