Jaguar XJ (X350). Service manual — part 768

G552799t11 : CHECK THE GLOW PLUG OUTPUT CIRCUITS FOR HIGH
RESISTANCE

1. Measure the resistance between:

EC74, harness side EC76, harness side

Pin 01

Pin 01

Pin 02

Pin 02

Pin 03

Pin 03

EC74, harness side EC77, harness side

Pin 04

Pin 01

Pin 05

Pin 02

Pin 06

Pin 03

Is the resistance less than 10 ohms?

-> Yes

If DTCs P0380 or P0382 are logged and the tests above have not identified a circuit fault, a control

module may be at fault.

-> No

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

DTC, test the system for normal operation.

Removal and installation

Glow Plugs

Removal

1 . Remove the intake air shutoff throttle.

For additional information, refer to Intake Air Shutoff Throttle

2 . Remove the crankcase vent oil separator.

For additional information, refer to Crankcase Vent Oil Separator

3

.

NOTE:

Remove and discard the O-ring seal.

Remove the oil filter element housing.

Rotate the oil filter element housing five complete turns counter-

clockwise.

Allow the engine oil to drain from the oil filter element housing for two

minutes.

Remove the oil filter element housing.

4 . Detach the right-hand glow plug electrical connector.

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5 . Detach the left-hand glow plug electrical connector.

6 . Remove the right-hand bank glow plugs.

7 . Remove the left-hand bank glow plugs.

Installation

1

.

NOTE:

Make sure glow plug electrical connector is correctly fitted to all glow plugs on the left-

hand bank.

To install, reverse the removal procedure.

Tighten to 10 Nm.

2

.

NOTE:

Make sure glow plug electrical connector is correctly fitted to all glow plugs on the right-

hand bank.

Tighten to 10 Nm.

3 . NOTE:

Install a new O-ring seal.

Tighten to 25 Nm.

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