Jaguar XJ (X350). Manual — part 718

PINPOINT TEST G552276p3 : CHECK
THE ROTARY ELECTRONIC
ACTUATOR CIRCUIT B

G552276t9 : CHECK THE ROTARY ELECTRONIC ACTUATOR GROUND
CIRCUIT FOR HIGH RESISTANCE

1. Rotary Electronic Actuator connector, C41

Circuit

Pin

(+) pwm motor C41 - 01

(-) pwm motor

C41 - 02

Ground

C41 - 03

PCM feedback

C41 - 04

5volt supply

C41 - 05

2. Powertrain Control Module (PCM) connector, C99,

Circuit

Pin

(+) pwm motor C99 - J3

(-) pwm motor

C99 - K3

Ground

C99 - D2

PCM feedback

C99 - B4

5volt supply

C99 - D1

3. 4. Disconnect the connector, C41. 5. Key on, Engine off. 6. Measure the resistance between:

C41, harness side

Battery

Pin 03

Negative terminal

Is the resistance less than 0.5 ohms?

-> Yes

GO to Pinpoint Test G552276t10.

-> No

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

DTCs, test the system for normal operation.

G552276t10 : CHECK THE POWER SUPPLY TO THE ROTARY ELECTRONIC
ACTUATOR

1. Measure the voltage between:

C41, harness side

Battery

Pin 05

Negative terminal

Is the voltage 4.5 volts and 5 volts?

-> Yes

GO to Pinpoint Test G552276t11.

-> No

Repair the power circuit. For additional information, refer to the wiring diagrams. Clear any DTCs,

test the system for normal operation.

G552276t11 : CHECK THE ROTARY ELECTRONIC ACTUATOR FEEDBACK
CIRCUIT FOR SHORT CIRCUIT TO GROUND

1. 2. Measure the resistance between:

C41, harness side

Battery

Pin 04

Negative terminal

Is the resistance greater than 10 Kohms (+/-10%) ?

-> Yes

GO to Pinpoint Test G552276t12.

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-> No

GO to Pinpoint Test G552276t14.

G552276t12 : CHECK THE ROTARY ELECTRONIC ACTUATOR FEEDBACK
CIRCUIT FOR SHORT CIRCUIT TO POWER

1. Measure the resistance between:

C41, harness side

Battery

Pin 04

Positive terminal

Is the resistance greater than 10 Kohms (+/-10%) ?

-> Yes

GO to Pinpoint Test G552276t13.

-> No

GO to Pinpoint Test G552276t15.

G552276t13 : CHECK THE ROTARY ELECTRONIC ACTUATOR FEEDBACK
CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the ECM connector, C99. 2. Measure the resistance between:

C41, harness side C99, harness side

Pin 04

Pin B4

Is the resistance less than 0.5 ohms?

-> Yes

GO to Pinpoint Test G552276t26.

-> No

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

DTCs, test the system for normal operation.

G552276t14 : CHECK WHETHER THE SHORT CIRCUIT TO GROUND IS IN THE
HARNESS OR THE MODULE

1. 2. Disconnect the ECM connector, C99. 3. Key on, engine off. 4. Measure the resistance between:

C41, harness side

Battery

Pin 04

Negative terminal

Is the resistance greater than 10 Kohms (+/-10%) ?

-> 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): - ECM

-> No

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

the system for normal operation.

G552276t15 : CHECK WHETHER THE SHORT CIRCUIT TO POWER IS IN THE
HARNESS OR THE MODULE

1. Key off. 2. Disconnect the ECM connector, C99. 3. Key on, engine off. 4. Measure the resistance

between:

C41, harness side

Battery

Pin 04

Positive terminal

Is the resistance greater than 10 Kohms (+/-10%) ?

-> 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): - ECM

-> No

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

the system for normal operation.

G552276t26 : CHECK THE ROTARY ELECTRONIC ACTUATOR PWM+ CIRCUIT
FOR SHORT CIRCUIT TO GROUND

1. Measure the resistance between:

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