Jaguar XJ (X350). Manual — part 763

Cylinder 6 ignition coil connector, harness side

Battery

PI08, pin 03

Negative terminal

Cylinder 7 ignition coil connector, harness side

Battery

PI05, pin 03

Negative terminal

Cylinder 8 ignition coil connector, harness side

Battery

PI09, 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 G531328t6.

G531328t6 : 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

Cylinder 7 ignition coil connector, harness side ECM connector PI300, harness side

PI05, pin 04

Pin 55

Cylinder 8 ignition coil connector, harness side ECM connector PI300, harness side

PI09, pin 04

Pin 54

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 G531328t7.

G531328t7 : CHECK THE IGNITION COIL MONITOR CIRCUITS FOR HIGH
RESISTANCE

1. Measure the resistance between:

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

PI02, pin 02

Pin 62

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

PI06, pin 02

Pin 64

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

PI03, pin 02

Pin 64

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

PI07, pin 02

Pin 62

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

PI04, pin 02

Pin 64

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

PI08, pin 02

Pin 62

Cylinder 7 ignition coil connector, harness side ECM connector PI300, harness side

PI05, pin 02

Pin 62

Cylinder 8 ignition coil connector, harness side ECM connector PI300, harness side

PI09, pin 02

Pin 64

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

INSTALL a new ignition coil to the relevant cylinder.

Ignition Coil-On-Plug (18.20.40) Clear the DTC and test the system for normal operation. Refer to the

warranty policy and procedures manual if an ECM is suspect.

PINPOINT TEST G531328p2 : CHECK
SPARK PLUG RESISTANCE

G531328t11 : CHECK SPARK PLUG RESISTANCE

1. Remove the suspect spark plug(s). 2. Measure the resistance between:

Spark plug

Spark plug

Center electrode tip HT contact

Is the resistance between 8,000 and 12,000 ohms? (nominal 10,000 ohms)

-> Yes

Check ignition coil and circuits. See possible sources list for misfire.

-> No

INSTALL a new spark plug. CLEAR the DTC and test the system for normal operation.

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