Jaguar XJ (X350). Manual — part 1017

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G549822t216 : CHECK THE APP1 SENSOR TO ECM RETURN CIRCUIT FOR
HIGH RESISTANCE

1. Measure the resistance between:

CR14, harness side EC66, harness side

Pin 03

Pin C1

Is the resistance less than 10 ohms?

-> Yes

Suspect : - 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.

G549822t217 : CHECK THE APP1 SUPPLY 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:

CR14, harness side CR14, harness side

Pin 05

Pin 03

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G549822t218.

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G549822t218 : CHECK WHETHER THE SHORT CIRCUIT TO GROUND IS IN
THE HARNESS OR THE MODULE

1. Measure the resistance between:

CR14, harness side

Battery

Pin 05

Negative terminal

Is the resistance greater than 100 Kohms?

-> Yes

Suspect: - ECM

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G549822t219 : CHECK WHETHER THE SHORT CIRCUIT TO POWER IS IN THE
HARNESS OR THE MODULE

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

between:

CR14, harness side

Battery

Pin 05

Positive terminal

Is the resistance greater than 100 Kohms?

-> Yes

Suspect: - ECM

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G549822t220 : CHECK THE APP1 SENSOR RETURN CIRCUIT FOR SHORT
CIRCUIT TO POWER

1. Measure the resistance between:

CR14, harness side

Battery

Pin 03

Positive terminal

Is the resistance greater than 100 Kohms?

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-> Yes

GO to Pinpoint Test G549822t215.

-> No

GO to Pinpoint Test G549822t221.

G549822t221 : CHECK WHETHER THE SHORT CIRCUIT TO POWER IS IN THE
HARNESS OR THE MODULE

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

between:

CR14, harness side

Battery

Pin 03

Positive terminal

Is the resistance greater than 100 Kohms?

-> Yes

Suspect: - ECM

-> No

REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test

the system for normal operation.

G549822t222 : CHECK THE APP2 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 06

Negative terminal

Is the resistance less than 10 ohms?

-> Yes

GO to Pinpoint Test G549822t223.

-> No

GO to Pinpoint Test G549822t235.

G549822t223 : CHECK THE SUPPLY TO THE APP2 SENSOR

1. Measure the voltage between:

CR14, harness side

Battery

Pin 02

Negative terminal

Is the voltage between 4.8 - 5.2 volts?

-> Yes

GO to Pinpoint Test G549822t224.

-> No

GO to Pinpoint Test G549822t232.

G549822t224 : CHECK THE APP2 SIGNAL CIRCUIT FOR SHORT CIRCUIT TO
GROUND

1. Measure the resistance between:

CR14, harness side

Battery

Pin 01

Negative terminal

Is the resistance greater than 100 Kohms?

-> Yes

GO to Pinpoint Test G549822t225.

-> No

GO to Pinpoint Test G549822t228.

G549822t225 : CHECK THE APP2 SIGNAL CIRCUIT FOR SHORT CIRCUIT TO
POWER

1. Measure the resistance between:

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