Jaguar XJ (X350). Manual — part 947

G531332t81 : CHECK THE MAF SENSOR GROUND CIRCUIT FOR HIGH
RESISTANCE

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

MAF sensor connector PI14, harness side ECM connector PI300, harness side

Pin 02

Pin 18

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 G531332t82.

G531332t82 : CHECK THE MAF SENSOR GROUND CIRCUIT FOR SHORT
CIRCUIT TO POWER

1. Key on, engine off. 2. Measure the voltage between:

MAF sensor connector PI14, harness side

Battery

Pin 02

Negative terminal

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

Refer to the warranty policy and procedures manual if an ECM is suspect.

PINPOINT TEST G531332p22 :
ACCELERATOR PEDAL POSITION
(APP) SENSOR SENSING CIRCUIT 1
HIGH/LOW VOLTAGE

G531332t83 : CHECK THE APP SENSOR SENSING CIRCUIT 1 FOR HIGH
RESISTANCE

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

connector, CR14. 4. Measure the resistance between:

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

Pin 01

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. TEST the system for normal operation.

-> No

GO to Pinpoint Test G531332t84.

G531332t84 : CHECK THE APP SENSOR SENSING CIRCUIT FOR SHORT
CIRCUIT TO POWER

1. Key on, ignition off. 2. Measure the voltage between:

APP sensor connector CR14, harness side

Battery

Pin 01

Negative terminal

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 G531332t85.

G531332t85 : CHECK THE APP SENSOR SENSING CIRCUIT FOR SHORT
CIRCUIT TO GROUND

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

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APP sensor connector CR14, harness side

Battery

Pin 01

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 G531332t86.

G531332t86 : CHECK THE APP SENSOR SUPPLY VOLTAGE AT THE SENSOR

1. Reconnect the ECM electrical connector, PI300. 2. Key on, ignition off. 3. Measure the voltage

between:

APP sensor connector CR14, harness side

Battery

Pin 02

Negative terminal

Is the voltage less than 4 volts?

-> Yes

GO to Pinpoint Test G531332t87.

-> No

INSTALL a new APP sensor.

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

G531332t87 : 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 02

Pin 32

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 G531332p23 :
ACCELERATOR PEDAL POSITION
(APP) SENSOR SENSING CIRCUIT 2
HIGH/LOW VOLTAGE

G531332t88 : CHECK THE APP SENSOR SENSING CIRCUIT FOR HIGH
RESISTANCE

1. Key off. 2. Disconnect the APP sensor electrical connector, CR14. 3. Disconnect the ECM electrical

connector, PI300. 4. Measure the resistance between:

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

Pin 04

Pin 24

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 G531332t89.

G531332t89 : CHECK THE APP SENSOR SENSING CIRCUIT FOR SHORT
CIRCUIT TO POWER

1. Key on, engine off. 2. Measure the voltage between:

APP sensor connector CR14, harness side

Battery

Pin 04

Negative terminal

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