Jaguar XJ (X350). Manual — part 752

G531326t4 : CHECK THE IGNITION COIL SWITCHING CIRCUITS FOR SHORT
CIRCUIT TO GROUND

1. Key off. 2. Measure the resistance between:

Ignition coil connector, harness side

Battery

Pin 04

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 DTCs

and test the system for normal operation.

-> No

GO to Pinpoint Test G531326t12.

G531326t12 : CHECK THE IGNITION COIL SWITCHING CIRCUITS FOR SHORT
CIRCUIT TO POWER

1. Measure the resistance between:

Ignition coil connector, harness side

Battery

Pin 04

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 DTCs

and test the system for normal operation.

-> No

GO to Pinpoint Test G531326t5.

G531326t5 : CHECK THE IGNITION COIL MONITOR CIRCUITS FOR SHORT
CIRCUIT TO GROUND

1. Measure the resistance between:

Ignition coil connector, 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 DTCs

and test the system for normal operation.

-> No

GO to Pinpoint Test G531326t6.

G531326t6 : CHECK THE IGNITION COIL MONITOR CIRCUITS FOR SHORT
CIRCUIT TO POWER

1. Measure the resistance between:

Ignition coil connector, 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 DTCs

and test the system for normal operation.

-> No

GO to Pinpoint Test G531326t3.

G531326t3 : CHECK THE IGNITION COIL GROUND CIRCUIT FOR HIGH
RESISTANCE

1. Measure the resistance between:

Cylinder 1 ignition coil connector, harness side

Battery

PI02, pin 03

Negative terminal

Cylinder 2 ignition coil connector, harness side

Battery

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PI06, pin 03

Negative terminal

Cylinder 3 ignition coil connector, harness side

Battery

PI03, pin 03

Negative terminal

Cylinder 4 ignition coil connector, harness side

Battery

PI07, pin 03

Negative terminal

Cylinder 5 ignition coil connector, harness side

Battery

PI04, pin 03

Negative terminal

Cylinder 6 ignition coil connector, harness side

Battery

PI08, pin 03

Negative terminal

Is the resistance greater than 5 ohms?

-> Yes

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

DTCs and test the system for normal operation.

-> No

GO to Pinpoint Test G531326t13.

G531326t13 : CHECK THE IGNITION COIL SWITCHING CIRCUITS FOR HIGH
RESISTANCE

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

Cylinder 1 ignition coil connector, harness side ECM connector PI300, harness side

PI02, pin 04

Pin 61

Cylinder 2 ignition coil connector, harness side ECM connector PI300, harness side

PI06, pin 04

Pin 60

Cylinder 3 ignition coil connector, harness side ECM connector PI300, harness side

PI03, pin 04

Pin 59

Cylinder 4 ignition coil connector, harness side ECM connector PI300, harness side

PI07, pin 04

Pin 58

Cylinder 5 ignition coil connector, harness side ECM connector PI300, harness side

PI04, pin 04

Pin 57

Cylinder 6 ignition coil connector, harness side ECM connector PI300, harness side

PI08, pin 04

Pin 56

Is the resistance greater than 5 ohms?

-> Yes

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

DTCs and test the system for normal operation.

-> No

GO to Pinpoint Test G531326t14.

G531326t14 : CHECK THE IGNITION COIL MONITOR CIRCUITS FOR HIGH
RESISTANCE

1. Measure the resistance between:

Cylinder 1 ignition coil connector, harness side ECM connector PI300, harness side

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