Jaguar X-Type Sedan and Estate (Wagon). Service manual — part 300

Published: 11-May-2011

Engine Ignition - 2.0L NA V6 - AJV6/2.5L NA V6 - AJV6/3.0L NA V6 - AJ27 -

General Specifications

Item

Specification

Firing Order

1,4,2,5,3,6

Spark Plug Gap mm (in)

1.3-1.45 (0.051-0.057)

Spark Plug Type

XW4E-12405

Silicone Dielectric Compound D7AZ-19A331-A (Spark Plug Connector)

ESE-M1C171-A

High Temperature Nickel Anti-Seize Lubricant F6AZ-9L494-AA (Spark Plug Thread)

ESE-M12A4-A

Torque Specifications

Description

Nm

lb-ft

Spark plugs

15

11

Ignition coil retaining bolts

6

4

Published: 11-May-2011

Engine Ignition - 2.0L NA V6 - AJV6/2.5L NA V6 - AJV6/3.0L NA V6 - AJ27 - Engine
Ignition

Description and Operation

Component Locations

Item

Part Number

Description

1

-

Ignition Coil

2

-

Spark Plug

3

-

RH Bank

4

-

Ignition Coil Retaining Bolt

5

-

LH Bank

In order for the correct firing order to be observed it should be noted that the correct cylinder numbering is, when viewed from the rear of
the engine, the right-hand cylinder bank is numbered 5,3,1 and the left-hand cylinder bank is numbered 6,4,2.

The ignition system consists of an ignition coil for each individual cylinder located on each individual spark plug. This allows the ignition
timing to be adjusted more rapidly and independently.

The crankshaft position (CKP) sensor signal is the basis for ignition timing calculations. The alternating voltage signal from the CKP sensor
is converted by the engine control module (ECM). This digital signal is then used to position the closing time of the primary circuit of the
ignition coil. The effective range for ignition timing control is increased by the fact that there are no rotating parts.

On the basis of engine speed and load inputs, the ECM determines the ignition timing. This function also takes other inputs into
consideration such as engine temperature, throttle position, knock control and electronic transmission control inputs.

This ignition system allows the customer to drive the vehicle home if an ignition coil or ignition coil wiring harness failure occurs. In the
event of a wiring harness failure between the ECM and the ignition coil, the ignition coil will fail instead of its fuse. This will allow the
remaining ignition coils to continue to function.

Published: 11-May-2011

Engine Ignition - 2.0L NA V6 - AJV6/2.5L NA V6 - AJV6/3.0L NA V6 - AJ27 - Engine
Ignition2.0L NA V6 - AJV6

Diagnosis and Testing

1. Verify the customer concern by operating the system.

1.

2. Visually inspect for obvious signs of mechanical or electrical damage.

2.

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next

step.

3.

4. The DTC summaries are generated to support the Jaguar approved diagnostic system, but also provide the basis for diagnosis of

OBD related concerns using a suitable generic scan tool, in conjunction with the electrical guides. Until the DTC summaries and
electrical guides are available, the engine ignition system can only be accurately diagnosed using the Jaguar approved diagnostic
system. For additional information, refer to Dealer technical support.

4.

Published: 11-May-2011

Engine Ignition - 2.0L NA V6 - AJV6/2.5L NA V6 - AJV6/3.0L NA V6 - AJ27 - Engine
Ignition2.5L NA V6 - AJV6/3.0L NA V6 - AJ27

Diagnosis and Testing

1. Verify the customer concern by operating the system.

1.

2. Visually inspect for obvious signs of mechanical or electrical damage.

2.

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next

step.

3.

4. If the concern is not visually evident, refer to the Symptom Chart.

4.

Symptom Chart

DTC

Condition

Possible Source

Action

P0300
P0301
P0302
P0303
P0304
P0305
P0306

Random misfire detected.
Misfire at cylinders 1 to 6

Poor cylinder compression.
Damaged or worn piston
rings.
Inlet/exhaust valve stuck
open/closed.
Worn camshaft.
Damaged cylinder head
gasket.
Spark plug fouled/damaged,
incorrect gap.

REFER to Section

303-01A Engine

/

303-01B Engine

.

Fuel delivery pressure
high/low.
Faulty injector
inoperative/leaking.
Fuel injector continuously
open.
Fuel contamination.
Fuel injector circuit fault.

REFER to Section

303-04A Fuel Charging and Controls

/

303-04B Fuel Charging and Controls

/

303-04C Fuel Charging

and Controls - Turbocharger

.

Damaged ignition coil.
Damaged electrical
harness/connection.
Damaged spark plug.

GO to Pinpoint Test

A.

P0351
P0353
P0355

Ignition coils 1A, 2A or 3A
primary circuit malfunctions.

Ignition coil open/short
circuit.
Ignition coil insulation
breakdown.
Damaged harness.
Connector pins bent or
corroded.
Ignition circuit ground fault.
Damaged engine control
module (ECM).

GO to Pinpoint Test

A.

P0352
P0354
P0356

Ignition coils 1B, 2B or 3B
primary circuit malfunctions.

Ignition coil open/short
circuit.
Ignition coil insulation
breakdown.
Damaged harness.
Connector pins bent or
corroded.
Ignition circuit ground fault.
Damaged ECM.

GO to Pinpoint Test

A.

P1367

Ignition amplifier group 1
fault. (Cylinders 1, 3, and
5).

Ignition coil open/short
circuit.
Ignition coil insulation
breakdown.
Damaged harness.
Connector pins bent or
corroded.
Ignition circuit ground fault.
Damaged ECM.

GO to Pinpoint Test

A.

P1368

Ignition amplifier group 2
fault. (Cylinders 2, 4, and
6).

Ignition coil open/short
circuit.
Ignition coil insulation
breakdown.
Damaged harness.
Connector pins bent or
corroded.
Ignition circuit ground fault.
Damaged ECM.

GO to Pinpoint Test

A.