vin JAGUAR X308 1998 2.G Workshop Manual

Instrument Cluster - Ins
trument Cluster
D
iagn
osis and Testing
Tests U
s
ing the Portable Diagnostic Unit
Re
fe
r to PDU User Guide
The c
o
mplexity of the electronics involved with the Instrument Cluster and the two multiplexed communication networks
which are connected to it, preclude the use of workshop genera l electrical test equipment. Therefore, reference should be
made to the PDU User Guide for detailed instructions on testing the Instrument Clus ter and associated circuits.
The PDU systematically test s and analyses all functions of the Instrument Clus ter, the various systems controlled by it and
individual sensors which are attached to each separate system.
Where a fault involving a remote sensor e. g. water temperature sensor, is indicated, before replacing the component, some
basic diagnostic methods may be necessary to confirm that connections are good and that wiring is not damaged.
Diagnostics using the PDU is via the CAN network, accessed at the diagnostic connector on the car.
Replaceable Parts
The only replaceable part s
are, General Illumination Bulbs, Direction Indicator Warning Bu
lbs and Main Beam Warning Bulb,
which are all of the conventional filament type. Other warning lamps are LEDs and are not replaceable.

Horn - Horn
Diagnosis and Testing
Tests Using the Portable Diagnostic Unit
Refer to PDU User Guide
The complexity of the electronics involved with the various Electronic Control Modules and the multiplexed communication
networks, preclude the use of workshop general electrical test equipment. Therefore, reference should be made to the PDU
User Guide for detailed instructions on test ing the horn circuit.
The PDU systematically tests an d analyses all functions of the horn, the horn relay, the bo dy processor module and the
operating switch.
Where a fault involving the horn, relay or switch is indicate d by the PDU, before replacing the component, some basic
diagnostic methods may be necessary to confirm that co nnections are good and that wiring is not damaged.

Clock - Clock
Diagnosis and Testing
Tests Using the Portable Diagnostic Unit
Refer to PDU User Guide
The complexity of the electronics involved with the various Electronic Control Modules and the two multiplexed
communication networks, preclude the use of workshop general electrical test equipment. Therefore, reference should be
made to the PDU User Guide for detailed in structions on testing the clock circuit.
The PDU systematically tests an d analyses the clock and the electrucal connections to it.
Where a fault involving the clock is indicated by the PDU, befo re replacing the clock, some basic diagnostic methods may be
necessary to confirm that connections are good and that wiring is not damaged.

Parking Aid - Rear Parking Aid Sensor
Removal and Installation
Removal
Installation

1.
Raise and support the vehicle.
For additional information, refer to: Jacking
(100-02 Jacking
and Lifting, Descript ion and Operation).

2. Disconnect the electrical connector.

3. CAUTION: Make sure excessiv e pressure or tools are not
used when removing the parkin g aid sensor from the housing.
Remove the rear parking aid sensor.
1. To install, reverse the removal procedure.

Battery, Mounting and Cables - Battery and Cables Description and Operation
The battery has been designed specifically for Jaguar. It provides the high output which is required for this vehicle, but with a
substantial saving in weight. It is a low maintenance battery, located on the right ha nd side of the luggage compartment floor.
The negative (Ground) lead is connected to the vehicle body. The positive lead is connected to a high power protection module; from
here power is connected to the starter motor an d distributed to other systems on the vehicle.
The high power protection module comprises three fuses, each of 250A capacity. Two fuses are connected in parallel to provide
protection for the starter circuit. Th e third one provides high level protection for fusebox supply circuits .
PDU is unable to diagnose the overall condition of the battery - only that it is present and supplying battery voltage to the system.
To test the battery, follow the test procedure described in Section 414-02 Generator and Regulator of this Manual.
Although these tests will not actually test the battery, they will confirm that the generator, regulator and connecting cables are
working correctly and that conseq uently, the battery may be at fault. Alternatively, the tests may indicate that the fault lies in the
generator, regulator or wiring and not in the battery.
Battery

Parts List


ItemPart NumberDescription
1—Battery
2—Positive Lead
3—Battery Hold-Down Clamp
4—Negative (Ground) Lead
5—High Power Protection Module (Fuses)

1. Disconnect the harness multi-plug.
2. Remove the protective boot from the positive
terminal, remove the termin al nut and disconnect the
cable from the terminal.

11. Remove the lower mounting bolt and reposition the harness
mounting bracket.

12. From above the vehicle, reposi tion the supercharger water
pump for access.
1. Reposition the pump harness multiplug from the
retaining bracket.
2. Remove the two nuts which secure the U-bracket around the pump.
3. Remove the U-bracket from the pump.
4. Reposition the pump to al low access for removing the
generator.

13. Remove the upper securing bolt and withdraw the generator
from the mounting bracket.
14. Carefully, manoeuvre the ge nerator forward towards the
radiator.

License plate lamps
Each license plate bulb is accessible after removing the relevant lens. The license plate lamps can be accessed following
removal of the trunk lid liner and upper trim finisher.
Rear lamp assembly
Each rear lamp assembly incorporates a stop/tail lamp, a fog lamp, a reversing lamp and a direction indicator lamp. Access
for bulb replacement is from the trunk.
Side markers
Each side marker is retained in the bumper cover by a lug on one end of the unit and a spring clip at the other end. The unit is not electrically connected for all markets.
High mounted stop lamp
The high mounted stop lamp (HMSL) is secu red to studs on the center lower edge of the backlight and provides illumination
using five bulbs.
Operation
All lamps are controlled by the BPM which pr ovides an appropriate output in response to an input received when a selected
switch is operated.
The side marker lamps receive an input from the BPM via relay 3 and fuse F21. The license plate lamps receive an input
from the BPM via relay 3 and fuse F19. The rela y and fuses are located in the trunk fuse-box.
The tail lamps receive an input direct from the BPM.
The stop, reversing and rear fog lamps are controlled by the security and locking module (SLM) which receives inputs via
the SCP network from the BPM.
The HMSL is not controlled by the SLM; it receives input from the brake switch via relay 5 and fuse F8 in the trunk fuse-box.

The BPM and SLM monitor the stop lamps (n ot HMSL) and tail lamps for failure.
Fault analysis must be undertaken using the PDU, refer to Diagnosis and Testing.
Consult the relevant Electrical Guid e for details of circuit operation.


2—Rear Lamp Assembly
3—Rear Side Marker
4—High Mounted Stop Lamp

Exterior Lighting - Exterior Lighting
Diagnosis and Testing
Tests Using the Portable Diagnostic Unit
Refer to PDU User Guide
The complexity of the electronics involved with the various Electronic Control Modules and the multiplexed communication
networks, preclude the use of workshop general electrical test equipment. Therefore, reference should be made to the PDU
User Guide for detailed inst ructions on testing the exterior lamps and circuits.
The PDU systematically tests and analyses the lamp assemblies, the bulbs and the electrical connections to them. It should
be noted that the lamps are not wired direct ly to the switches. Actuation of a switch provides an input signal to the Body
Processor which interpre ts the signal as a request to switch output from the Bo dy Processor, either directly or indirectly to a
specific lamp.
Where a fault involving a lamp is indicated by the PDU, befo re replacing the component, some basic diagnostic methods
may be necessary to confirm that connections are good and that wiring is not damaged.

Interior Lighting - Interior Lighting
Diagnosis and Testing
Tests Using the Portable Diagnostic Unit
Refer to PDU User Guide
The complexity of the electronics involved with the various Electronic Control Modules and the multiplexed communication
networks, preclude the use of workshop general electrical test equipment. Therefore, reference should be made to the PDU
User Guide for detailed inst ructions on testing the interior lamps and circuits.
The PDU systematically tests and analyses the lamp assemblies, the bulbs and the electrical connections to them. It should
be noted that the lamps are not wired directly to the switches.
The lamps are controlled directly by the Bo dy Processor (it has a sufficient number of high power output stages to drive the
lamps / relays compared to other module s) except for the door guard / puddle lamps and the rear passenger reading lamps.

The Body Processor Module receives messages on the SCP network from the door modules relating to door ajar / closed /
locked status, sensed by the door courtesy switch(es).
Where a fault involving a lamp is indicated by the PDU, be fore replacing suspect components, some basic diagnostic
methods may be necessary to confirm that connecti ons are good and that wiring is not damaged.

The part number of the pre-terminated wiring harness The letter showing the extractor tip which must be used to remove this type of electrical connector terminal Those electrical connector terminals which are gold
Some of the pre-terminated wiring harness( s) have seals installed to the insulation for sealed connector applications. It is
essential for prevention of mo isture ingress that a sealed pre-terminated wiring harness must be used where a sealed
terminal was removed.
CAUTION: Where the repair procedure indica tes that a glue lined heat shrink sleeve should be applied, apply sufficient
heat to the glue lined heat shrink to melt the glue in order to provide a water tight seal. Do not over heat the glue lined
heat shrink sleeve so that the wiring harness insulation becomes damaged.
Two sizes of heat shrink sleeving are supplied in the wiring harn ess repair kit. Each heat shrink sleeve contains a sealant
glue. These must be used when connecting wiring harness(s) or electrical connector terminal(s) at all times. The smaller
diameter heat shrink sleeve is to be used with the red and blue butt splice connectors and the larger di ameter sleeve with
the yellow butt sp lice connectors.
For ease and speed, some of the pre-term inated wiring harness(s) may already have the insulation partly stripped at the
splice end. If the repair requires insula tion to be stripped from the cable, refer to the Relationship Table fo r the correct
length of insulation to be stripped.
The Pre-Terminated Wiring Harness(s) illu stration shows the electrical connector terminal type, the part number of the pre-
terminated wiring harness and the letter of the extractor tip which must be used to extract the electrical connector terminal
from the connector housing. Additionally, those electrical conne ctor terminal(s) which are gold are identified, all others are
therefore, tinned and not gold.
Wiring Harness Cable Identification Sleeves
A selection of colored sleeves are contai ned in the wiring harness repair kit for maintaining the wiring harness cable
identification on the pre-term inated wiring harness. Place the correct colo red sleeve(s) over the pre-terminated wiring
harness insulation as near to the electr ical connector as possible with the main wiring harness cable color nearest to the
electrical connector.
For example, if the original wiring harness cable color is pink with a black trace put the pink wiring harness cable
identification sleeve on the pre-terminated wiring harness first followed by a black sleeve, and slide both along the wiring
harness cable to the electr ical connector terminal.
Extraction Handle and Tips
The extraction handle, in conjunction with th e correct tip, is used to remove a terminal from an elec trical connector. Each tip contained in the wiring harness repair kit is marked with an identification letter, A to K inclusive. Each tip has been special ly
designed to extract a particular ty pe of electrical connector terminal. The use of any other tool is not recommended and is
liable to cause damage to the electrical connector. The tip is fastened to the handle by a screw which holds the tip firmly yet
allows it to be easily replaced.
Extraction Handle and Tips