Jaguar XJ (X350). Manual — part 875

INSTALL a new starter relay. Clear the DTC and test the system for normal operation. If the DTC

resets, refer to the warranty policy and procedures manual if an ECM is suspect.

PINPOINT TEST G531330p29 : RIGHT-
HAND VARIABLE CAMSHAFT TIMING
(VCT) OIL CONTROL SOLENOID
CIRCUIT

G531330t140 : CHECK ECM TO VCT SOLENOID SUPPLY CIRCUIT VOLTAGE

1. Disconnect the VCT solenoid electrical connector, PI16. 2. Key on, engine off. 3. Measure the

voltage between:

VCT solenoid connector PI16, harness side

Battery

Pin 02

Negative terminal

Is the voltage greater than 10 volts?

-> Yes

GO to Pinpoint Test G531330t143.

-> No

REPAIR the circuit between the VCT solenoid electrical connector and battery. This circuit includes

fuse 12 of the front power distribution box and the EMS control relay. For additional information,

refer to the wiring diagrams. CLEAR the DTC and test the system for normal operation.

G531330t143 : CHECK VCT SOLENOID CONTROL CIRCUIT FOR HIGH
RESISTANCE

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

VCT solenoid connector PI16, harness side ECM connector PI300, harness side

Pin 01

Pin 86

Is the resistance greater than 5 ohms?

-> Yes

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

DTC and test the system for normal operation.

-> No

INSTALL a new VCT oil control solenoid.

Variable Camshaft Timing (VCT) Oil Control Solenoid (18.30.90) CLEAR the DTC and test the system

for normal operation.

PINPOINT TEST G531330p30 : LEFT-
HAND VARIABLE CAMSHAFT TIMING
(VCT) OIL CONTROL SOLENOID
CIRCUIT

G531330t142 : CHECK ECM TO VCT SOLENOID SUPPLY CIRCUIT VOLTAGE

1. Disconnect the VCT solenoid electrical connector, PI17. 2. Key on, engine off. 3. Measure the

voltage between:

VCT solenoid connector PI17, harness side

Battery

Pin 02

Negative terminal

Is the voltage greater than 10 volts?

-> Yes

GO to Pinpoint Test G531330t147.

-> No

REPAIR the circuit between the VCT solenoid electrical connector and battery. This circuit includes

fuse 12 of the front power distribution box and the EMS control relay. For additional information,

refer to the wiring diagrams. CLEAR the DTC and test the system for normal operation.

G531330t147 : CHECK VCT SOLENOID CONTROL CIRCUIT FOR HIGH
RESISTANCE

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

VCT solenoid connector PI17, harness side ECM connector PI300, harness side

Pin 01

Pin 87

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Is the resistance greater than 5 ohms?

-> Yes

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

DTC and test the system for normal operation.

-> No

INSTALL a new VCT oil control solenoid.

Variable Camshaft Timing (VCT) Oil Control Solenoid (18.30.90) CLEAR the DTC and test the system

for normal operation.

PINPOINT TEST G531330p32 : EMS
CONTROL RELAY CIRCUITS

G531330t149 : CHECK THE EMS RELAY PERMANENT SUPPLY VOLTAGES

1. Remove the EMS relay. 2. Measure the voltage between:

EMS relay base, harness side

Battery

Pin 01

Negative terminal

Pin 03

Negative terminal

Are both voltages greater than 10 volts?

-> Yes

GO to Pinpoint Test G531330t92.

-> No

REPAIR the circuit between the relay base and battery. For additional information, refer to the wiring

diagrams. CLEAR the DTC and test the system for normal operation.

G531330t92 : CHECK THE ECM TO EMS RELAY CONTROL CIRCUIT FOR
SHORT CIRCUIT TO GROUND

1. Measure the resistance between:

EMS relay base, harness side

Battery

Pin 02

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 and

test the system for normal operation.

-> No

GO to Pinpoint Test G531330t111.

G531330t111 : CHECK THE ECM TO EMS RELAY CONTROL CIRCUIT FOR
SHORT CIRCUIT TO POWER

1. Measure the resistance between:

EMS relay base, harness side

Battery

Pin 02

Positive 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 and

test the system for normal operation.

-> No

GO to Pinpoint Test G531330t151.

G531330t151 : CHECK THE ECM TO EMS RELAY CONTROL CIRCUIT FOR
HIGH RESISTANCE

1. Disconnect the ECM electrical connector, EC300. 2. Measure the resistance between:

EMS relay base, harness side ECM connector EC300, harness side

Pin 02

Pin 16

Is the resistance greater than 5 ohms?

-> Yes

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

DTC and test the system for normal operation.

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