Jaguar XJ (X350). Manual — part 716

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

Circuit

Pin

(+) pwm motor C99 - J2

(-) pwm motor

C99 - K2

Ground

C99 - G3

PCM feedback

C99 - C4

5volt supply

C99 - D1

3. 4. Disconnect the connector, C40. 5. Key on, engine off. 6. Measure the resistance between:

C40, harness side

Battery

Pin 03

Negative terminal

Is the resistance less than 0.5 ohms?

-> Yes

GO to Pinpoint Test G552276t3.

-> No

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

DTCs, test the system for normal operation.

G552276t3 : CHECK THE POWER SUPPLY TO THE ROTARY ELECTRONIC
ACTUATOR

1. Measure the voltage between:

C40, harness side

Battery

Pin 05

Negative terminal

Is the voltage between 4.5 volts and 5 volts?

-> Yes

GO to Pinpoint Test G552276t4.

-> No

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

test the system for normal operation.

G552276t4 : CHECK THE ROTARY ELECTRONIC ACTUATOR FEEDBACK
CIRCUIT FOR SHORT CIRCUIT TO GROUND

1. 2. Measure the resistance between:

C40, harness side

Battery

Pin 04

Negative terminal

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

-> Yes

GO to Pinpoint Test G552276t5.

-> No

GO to Pinpoint Test G552276t7.

G552276t5 : CHECK THE ROTARY ELECTRONIC ACTUATOR FEEDBACK
CIRCUIT FOR SHORT CIRCUIT TO POWER

1. Measure the resistance between:

C40, harness side

Battery

Pin 04

Positive terminal

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

-> Yes

GO to Pinpoint Test G552276t6.

-> No

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GO to Pinpoint Test G552276t8.

G552276t6 : CHECK THE ROTARY ELECTRONIC ACTUATOR FEEDBACK
CIRCUIT FOR HIGH RESISTANCE

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

C40, harness side C99, harness side

Pin 04

Pin C4

Is the resistance less than 0.5 ohms?

-> Yes

GO to Pinpoint Test G552276t16.

-> No

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

DTCs, test the system for normal operation.

G552276t7 : 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:

C40, 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.

G552276t8 : 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:

C40, 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.

G552276t16 : CHECK THE ROTARY ELECTRONIC ACTUATOR PWM+ CIRCUIT
FOR SHORT CIRCUIT TO GROUND

1. Measure the resistance between:

C40, harness side

Battery

Pin 01

Negative terminal

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

-> Yes

GO to Pinpoint Test G552276t17.

-> No

GO to Pinpoint Test G552276t19.

G552276t17 : CHECK THE ROTARY ELECTRONIC ACTUATOR PWM+ CIRCUIT
FOR SHORT CIRCUIT TO POWER

1. Measure the resistance between:

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