Jaguar XJ (X350). Manual — part 995

Circuit

Pin

Accelerator pedal position sensor 1 - signal

04

Accelerator pedal position sensor 1 - power 05

Accelerator pedal position sensor 1 - return 03

2.

Circuit

Pin

Accelerator pedal position sensor 1 - signal

D1

Accelerator pedal position sensor 1 - power E1

Accelerator pedal position sensor 1 - return C1

3. Key on, engine off. 4. Make sure the accelerator pedal is released. 5. Access the ECM-Pedal

position sensor 1 (voltage) PID using the Jaguar approved diagnostic system or a scan tool.

Is the voltage between 0 - 1 volts?

-> Yes

GO to Pinpoint Test G549822t85.

-> No

GO to Pinpoint Test G549822t86.

G549822t85 : CHECK THE APP1 VALUE, WITH THE ACCELERATOR FULLY
DEPRESSED

1. Make sure the accelerator pedal is fully depressed. 2. Access the ECM-Pedal position sensor 1

(voltage) PID using the Jaguar approved diagnostic system or a scan tool.

Is the voltage between 2.2 - 2.7 volts?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness.

-> No

GO to Pinpoint Test G549822t86.

G549822t86 : CHECK THE APP1 SENSOR RETURN CIRCUIT FOR HIGH
RESISTANCE

1. Key off. 2. Disconnect the APP sensor connector, CR14. 3. Key on, engine off. 4. Measure the

resistance between:

CR14, harness side

Battery

Pin 03

Negative terminal

Is the resistance less than 10 ohms?

-> Yes

GO to Pinpoint Test G549822t87.

-> No

GO to Pinpoint Test G549822t104.

G549822t87 : CHECK FOR POWER TO THE APP1 SENSOR

1. Measure the voltage between:

CR14, harness side

Battery

Pin 05

Negative terminal

Is the voltage between 4.8 - 5.2 volts?

-> Yes

GO to Pinpoint Test G549822t88.

www.

-> No

GO to Pinpoint Test G549822t96.

G549822t88 : CHECK THE APP1 SIGNAL CIRCUIT FOR SHORT CIRCUIT TO
GROUND

1. Measure the resistance between:

CR14, harness side

Battery

Pin 04

Negative terminal

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G549822t89.

-> No

GO to Pinpoint Test G549822t92.

G549822t89 : CHECK THE APP1 SIGNAL CIRCUIT FOR SHORT CIRCUIT TO
POWER

1. Measure the resistance between:

CR14, harness side

Battery

Pin 04

Positive terminal

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G549822t90.

-> No

GO to Pinpoint Test G549822t94.

G549822t90 : CHECK THE APP1 SIGNAL AND POWER CIRCUITS FOR SHORT
CIRCUIT TO EACH OTHER

1. Measure the resistance between:

CR14, harness side CR14, harness side

Pin 04

Pin 05

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G549822t91.

-> No

GO to Pinpoint Test G549822t95.

G549822t91 : CHECK THE APP1 SIGNAL CIRCUIT FOR HIGH RESISTANCE

1. Key off. 2. Disconnect the ECM connector, EC66. 3. Measure the resistance between:

CR14, harness side EC66, harness side

Pin 04

Pin D1

Is the resistance less than 10 ohms?

-> Yes

An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other

physical damage to the harness. If no fault is found in the circuit, suspect the following

component(s): - APP connector - APP sensor - ECM connector - ECM

-> No

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

DTCs, test the system for normal operation.

G549822t92 : CHECK THE APP1 SIGNAL AND RETURN CIRCUITS FOR SHORT
CIRCUIT TO EACH OTHER

1. Key off. 2. Disconnect the ECM connector, EC66. 3. Key on, engine off. 4. Measure the resistance

between:

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