Jaguar XJ (X350). Manual — part 1275

G215852t77 : CHECK THE GENERATOR FOR MECHANICAL NOISE

1. Rotate the generator pulley by hand.

•

Does the generator rotor shaft rotate smoothly and quietly?

-> Yes

GO to Pinpoint Test G215852t79.

-> No

INSTALL a new generator. TEST the system for normal operation.

G215852t79 : CHECK THE ACCESSORY DRIVE BELT IDLER PULLEYS

1. Rotate the accessory drive belt idler pulleys by hand.

•

Do the accessory drive belt idler pulleys rotate smoothly and quietly?

-> Yes

GO to Pinpoint Test G215852t80.

-> No

INSTALL new accessory drive belt pulleys as necessary. TEST the system for normal operation.

G215852t80 : CHECK THE GENERATOR FOR ELECTRICAL NOISE

1. Install the accessory drive belt. 2. Start and run the engine at 1500 rpm. Apply a high electrical load

to the battery.

•

Is the noise only heard with the high electrical load applied?

-> Yes

GO to Pinpoint Test G215852t81.

-> No

CHECK the air conditioning compressor. For additional information <<412-03>> CHECK the power

steering pump. For additional information <<211-02>> TEST the system for normal operation.

G215852t81 : ELIMINATE THE GENERATOR AS THE CAUSE OF ELECTRICAL
NOISE

1. Remove fuse 15 from the primary junction fuse box. 2. Start and run the engine at 1500 rpm.

•

Is the noise still present?

-> Yes

CHECK the air conditioning compressor. For additional information <<412-03>> CHECK the power

steering pump. For additional information <<211-02>> TEST the system for normal operation.

-> No

INSTALL a new generator. TEST the system for normal operation.

PINPOINT TEST G215852p9 : RADIO
INTERFERENCE

G215852t82 : CHECK IF THE GENERATOR IS THE CAUSE OF THE RADIO
INTERFERENCE

1. Start and run the engine at 1500 rpm. 2. Turn the radio to the ON position, and select the affected

station.

•

Is the radio interference present?

-> Yes

GO to Pinpoint Test G215852t84.

-> No

GO to Pinpoint Test G215852t83.

G215852t83 : CHECK IF THE GENERATOR IS THE CAUSE OF THE RADIO
INTERFERENCE WITH A HIGH ELECTRICAL LOAD APPLIED TO THE
BATTERY

1. Start and run the engine at 1500 rpm. 2. Apply a high electrical load to the battery. 3. Turn the

radio to the ON position, and select the affected station.

•

Is the radio interference present?

-> Yes

GO to Pinpoint Test G215852t84.

-> No

DIAGNOSE the entertainment system. For additional information <<415-00>>

G215852t84 : ELIMINATE THE GENERATOR AS THE CAUSE OF RADIO
INTERFERENCE

1. Remove fuse 33 from the primary junction fuse box. 2. Start and run the engine at 1500 rpm. 3.

Turn the radio to the ON position, and select the affected station.

•

Is the radio interference present?

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-> Yes

DIAGNOSE the entertainment system. For additional information <<415-00>>

-> No

CLEAN and tighten all mounting points, positive and negative cable connections (including the

bonnet, boot and engine GROUND straps). INSTALL fuse 15 from the primary junction fuse box. TEST

the system for normal operation. If interference is still present, INSTALL a new generator.

Charging System - 2.7L V6 - TdV6

Overview

There are changes to diagnostics for 2006 my, the most obvious of which will be the change to 7-digit

diagnostic trouble codes (DTCs) from the familiar 5-digit.

Refer to the DTC index in this section for guidance on how to use these codes with the Jaguar

approved diagnostic system or a scan tool.

For information on the operation of the system,

Charging System

Inspection and Verification

1 . Verify the customer concern.

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

Mechanical

Electrical

•

Generator

•

Front end accessory drive (FEAD) belt condition
and tension

•

Accessory drive belt tensioner

•

Generator pulley

•

Generator fittings/connections

•

Generator

•

Battery

•

Starter motor

•

Harnesses and connectors

•

Fuse 30, rear power distribution
box

•

Starter motor megafuse

•

Charge warning light function

•

Controller area network (CAN)
circuit fault

•

Engine control module (ECM)

3 . Check the vehicle battery condition and state of charge before condemning any charging system

components. For additional information, refer to the battery care manual.

4 . If an obvious cause for an observed or reported concern is found, correct the cause (if possible)

before proceeding to the next step.

5 . If the cause is not visually evident use the Jaguar approved diagnostic system or a scan tool to

retrieve the fault codes before proceeding to the DTC index, or the symptom chart if no DTCs are set.

Symptom chart

Symptom

Possible cause

Action

Charge warning

•

Bulb/circuit fault

Check the warning light function with the ignition on

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