1998 JAGUAR X308 Amp

Generator and Regulator - Generator4.0L SC V8 - AJ26
Removal and Installation
Removal

1. Disconnect the batt ery ground cable.
Remove the battery cover.
2. Remove the air cleaner assembly (including fit body paintwork
protection sheets to the adja cent working area); refer to
operation 19.10.05.
3. Remove the twin fan and moto r assembly from behind the
radiator; refer to operation 26.25.12.
4. Remove the supercharger drive belt; refer to operation
18.50.08.
5. Remove the supercharger driv e belt tensioner; refer to
operation 18.50.24.
6. Check that the belt wear indica tor (accessory drive) is within
the limit marks.

7. Remove the drive belt from the generator and accessory
drive,
1. Use a spanner e.g. Churchill JD-230 or Snap On XDHM 1415, on the centre bo lt of the belt tensioner
idler pulley, to turn the adju ster assembly to the left
against spring tension.
2. Whilst holding the tensioner against spring tension, remove the drive belt from the generator pulley.
Release the tensioner sl owly and remove the
spanner.
Disconnect the belt from the ot her pulleys, as necessary,
to move it clear of the generator.
8. Raise the vehicle on a ramp; refer to Section 100-02

9. Remove the air intake ducting fr om the generator. The ducting
comprises two sections; the upper section is retained by two
screws to the sump body assembly and the lower (horizontal)
section is retained by one screw.
10. Disconnect the generator harness.

2. Fit the lower mounting bolt and nut, tighten to 38-48
Nm.

3. Connect the harness.
1. Secure the main positive cable to the generator positive terminal.
2. Fit the boot to the terminal.
3. Reconnect the generator harness multi-plug.

4. Refit the air intake ducting to the generator. The upper section
is retained by two screws to the sump body assembly and the
lower (horizontal) section is retained by one screw.
5. Lower the vehicle on the ramp ; refer to Section 100-02.
6. Fully tighten the generator upper mounting bolt, to 18-24 Nm.

7. Reposition the superc harger water pump.
1. Reposition the pump to the mounting bracket.
2. Fit the U-bracket to the pump.
3. Fit the two nuts which secure the U-bracket around the pump.
4. Reposition the pump harness multiplug to the retaining bracket.
8. Refit the drive belt to the generator.
1. Pass the drive belt around the idler pulley.
2. Using spanner )Churchill JD-230 or Snap On XDHM

Audio Unit - Audio System
Description and Operation
The choice of two entertainment system s is available; base or premium.
The base system comprises a radio cassette player with in tegral message display and "Phone Ready" controls for an
accessory telephone; door speakers and tweeters.
The premium system has the following additional components: power amplifier, CD autochanger, sub-woofer and 'A' post
tweeters fitted instead of front door tweeters.
Both systems can be operated remotely by use of switches loca ted on the steering wheel and have an electrically operated
aerial.
Telephone controls incorporated in the ra dio cassette unit facilitate inclusion of the GSM hands free telephone system
available as optional equipment.
After diagnostic or repair operations, refer to the Sound System Handbook for setting-up procedures and operation.

The CD Autochanger and amplifier are mounte d on a bracket as a single assembly located at the left hand side of the trunk.
The complete assembly must be removed before the CD Autochanger and amplifier can be separated.
When the CD option is selected, the CD unit cycles through a self-check sequence and indicates the current status on the
message display. Refer to the Sound System Ha ndbook for complete operating instructions.

Audio Unit - Audio System
Diagnosis and Testing
Tests Using the Portable Diagnostic Unit
Refer to PDU User Guide
The PDU is unable to diagnose radio head, CD autochanger or amplifier faults; there are no self-diagnostics associated with
these components.
PDU is able to test the speakers and the antenna, along with associated wiring and connections, therefore by a process of
elimination, the other components can be diagnosed.

Audio Unit - Capacitor
Removal and Installation
Removal
Installation



1. Disconnect the batt ery ground cable.
Remove the battery cover.
2. Raise the vehicle on a ramp.

3. Remove the suppr ession module.
1. Disconnect the multi-plug from the mounting bracket clip.
2. Disconnect the multi-plug.
3. Remove the bolts which secure the suppression module to the mounting bracket.
4. Remove the su ppression module.
1. Installation is th e reverse of the re moval procedure.
2. Reconnect the battery ground cable and fit the battery cover.
Reset the radio inform ation and the clock.

Speakers - Speakers
Description and Operation
Speaker Location
Parts List


ItemPart NumberDescription
1—Door Speaker
2—Front Door Tweeter (Base System)
3—Rear Door Tweeter
4—CD Autochanger (P remium System)
5—Amplifier (Premium System)
6—Sub-woofer (Premium System)
7—'A' Post Tweeter (Premium System)

Speakers - Speakers
Diagnosis and Testing
Tests Using the Portable Diagnostic Unit
Refer to PDU User Guide
PDU can test for correct operation of each speaker and can provide fault guidance for any that fail to function.
PDU can indicate problems such as a faulty radio head output power signal, faulty power amplifier (where fitted), faulty
wiring, loss of power due to a blown fuse.