electrical JAGUAR X308 1998 2.G Workshop Manual

Exterior Lighting - Brake Pedal Position (BPP) Switch
Removal and Installation
Removal
Installation

1. Disconnect the brake pedal posi tion (BPP) switch electrical
connector.

2. Remove the BPP switch.
1. Press and hold down the brake pedal.

2. CAUTIONS:
Make sure the brake pedal is held clear of the BPP switch
ratchet mechanism during installation. Failure to follow this
instruction may result in incorrect adjustment of the BPP switch.
Make sure the BPP sw itch is correctly installed to the upper
locating point.
Install the BPP switch. 1. Align the BPP switch to the upper locating point.
2. Install the BPP switch.
3. Release the brake pedal.
4. CAUTION: Make sure the br ake pedal is fully raised.
Failure to follow this instru ction may result in incorrect
adjustment of the BPP switch.
Fully raise the brake pedal.

5. Connect the BPP switch electrical connector.

Rear courtesy/ reading lamps
Each rear quarter of the passenger compartment is fitted with combined lighting units comprising; a rear courtesy lamp and
reading lamp. The courtesy lamps operate automatically whenever a rear door is opened; the reading lamps function when
the integral switches are operated by occupants of the vehicle.
Trunk lamps
The trunk trim panel is fitted with lamps which operate auto matically whenever the trunk lid is opened; the switch is
incorporated within the latch mechanism.
Vanity mirror lamps
The vanity mirror lamps, two on each sun visor, operate auto matically when the mirror flap is opened, provided the sun
visor spindle is engage d in the stowage clip.
Operation
The BPM provides an enable signal for the glovebox, vanity mirror, trunk lid and map lamps. Actuation of the relevant
switch provides an earth path to the lamp.
The rear passenger reading lamps receive a supply di rect from fuse F10 in the RH heelboard fuse-box.
The front and rear courtesy lamps have separa te fade functions controlled by the BPM.
The door hazard / puddle lamps are controll ed locally by the relevant Door Module.
Fault analysis must be undertaken using the PDU, refer to Diagnosis and Testing.
Refer to the relevant Electrical Guid e for details of circuit operation.

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.

Interior Lighting - Vanity Mirror Lamp
Removal and Installation
Removal
Installation

1.
Release sun visor from retention bezel to isolate from electrical
supply.

2. Move sun visor to downward position and turn mirror cover
upwards.

3. Using a small screwdriver, carefu lly release illumination lens
tangs from vanity assembly.

4. Supporting vanity assembly, sl acken and remove securing
screws and remove assembly from sun visor.
1. Ensure that bulb holders and sw itch contactors are correctly
positioned and seated.
2. Position and fully seat vanity as sembly on sun visor and fit and
tighten securing screws.
3. Fit and fully seat mirror illumination lenses.
4. Turn mirror cover downwards.
5. Reposition sun visor in retentio n bezel and return to upward
position.

Daytime Running Lamps (DRL) - Daytime Running Lamps (DRL)
Diagnosis and Testing
Tests Using the Portable Diagnostic Unit
Refer to PDU User Guide
The complexity of the electronics involved with the Body Pr ocessor and the multiplexed communication networks which are
associated with it, preclude the use of wo rkshop general electrical test equipment. Therefore, reference should be made to
the PDU User Guide for detail ed instructions on testing the Daytime Running Function.
The Daytime Running function is exactly the same as for the normal operation of the side lamps (or dipped beam, where
specified) in as much as the body processor drives the same lamps from the same outputs.
The body processor has been programmed to respond to an alternative set of cond itions in order to operate the lamps,
instead of waiting for a signal from the normal light switch.
The conditions which have to be set are; ignition switch se t to position II or III and sidelight switch set to OFF. The
sidelights, side marker lamps (if fitted and enabled), tail lights and number plate lights will all be switched ON.
The PDU systematically tests and analyses all functions of the daytime running lamps.
Where a fault is indicated, before replac ing a component, some basic diagnostic methods may be necessary to confirm that
connections are good and that wiring is not damaged.

Wiring Harnesses - Wiring Harness
Description and Operation
Introduction
CAUTION: Do not use any other heat shrink sleeve other than the approved glue lined heat shrink sleeve mentioned
in the repair procedure.
The purpose of this document is to promote quick and efficient minor repair to harness connectors or cables using approved
methods and the wiring harness repair kit. Repairs may only be made to cables and connectors which have been
mechanically, not electrically damaged. It also applies wher e the whole extent of the damage can be clearly identified and
rectified.
Care and neatness are essential requir ements in making a perfect repair.
Caution:
At the time of this first issue of the Harness Repair Guide, do not approve re pairs to any of the following circuits:
Any media orientated system transport network harnesses. Supplement restraint system (SRS) firing circuits (Air bags). Link lead assembles, which are unique to safety critical circuits such as anti-lock brake system (ABS) and
thermocouple circuits. An example of this is the ABS wheel speed sensors with moulded connectors.
4. Screened cables, leads and wiring harness(s).
If any harness(s) with defective electrical connector te rminals or wires from the above circuits are a concern,
new components must be installed.
Repair Kit
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.
The wiring harness repair kit has been produced which comprises:
Pre-terminated wiring harness(s) of different sizes and types Three sizes of butt splice connectors A selection of colored cable identification sleeves Two sizes of glue lined heat shrink sleeves Crimping pliers A wire cutter and insulation stripper An electrical connector terminal extraction handle and tips
A suitable heat source, fo r shrinking heat shrink sleeves will be required.
The pre-insulated diamond grip range of el ectrical connector terminals and in-line, butt splice connectors contained within
the wiring harness repair kit are the only acceptable product for the repairs of wi ring harnesses. The butt connectors not
only grip the wire but also the insu lation, making a very secure joint.
If an electrical connector terminal is not included in the wiring harness repair kit then approval for the repair is NOT given
and in these circumstances a new wi ring harness must be installed.
Pre-Terminated Wiring Harness( s) and Butt Splice Connectors
All pre-terminated wiring harness(s) and butt splice connectors in the wiring harness repair kit are contained in bags which
can be resealed after use. Each bag is marked with the part number of the items stored within the bag. Each storage
compartment in the wiring harness repair kit is identified with the corresponding part number. Make sure that pre-
terminated wiring harness(s) and connectors are not mixed up it is advisable to only open one bag at a time and to reseal

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

Items can be ordered from:
SPX United Kingdom Limited
Ironstone Way
Brixworth
Northants
NN6 9UD
United Kingdom
Telephone: +44 (0) 1327 704461
Fax: +44 (0) 1327 706632
Repair Methods
CAUTION: Several different types and sizes of terminal may be found in a single electrical connector
housing.
It is necessary to identify:
The conductor (wire) size of the affected wiring harness The electrical connector range from which the damaged wiring harness is to be removed The terminal type
Use of the approved diagnostic tool will greatly assist in th e quick identification of electrical connectors and faulty pin
terminal(s).
Reference can also be made to the vehicle Electrical Guides, he ld by Dealers, to identify wiring harness(s) and electrical
connector(s).
By using the Relationship Table, the wiring harness conductor (wire) size can be related to a suitable pre-terminated wiring
harness by the color of the insulation. Also , the correct length of insulation to be stripped from the wiring harness lead is
identified.
Relationship Table
Electrical Connector Terminal Extraction
Tip G418-1241
Tip H418-1251
Tip I418-1261
Tip J418-1271
Tip K418-1281
Sleeve Identification Pa ck – for Red insulation418-112500
Sleeve Identification Pack – for Blue insulation 418-113500
Sleeve Identification Pack – for Yellow insulation 418-114500
Instruction Manual JTP 5931
Crimping Pliers YRW5000101
Wire Stripping Tool 418-1171
CABLE RANGE SPLICE STRIP LENGTH
0.35 mm² to 1.50 mm²RED6.00 to 7.00 mm
1.00 mm² to 2.50 mm²BLUE6.00 to 7.00 mm
4.00 mm² to 6.00 mm²YELLOW9.00 to 9.50 mm

It must be noted that some electrical connector(s) have anti-backout devices which prevent the terminals from being
removed from the electrical connector. Some examples of thes e are shown in following illustrations. The anti-backout device must be released before attempting to remove the terminal from the electrical connector. Some anti-backout devices
require a special tip to release the device and these have been included in the kit. Most can be released by carefully using a
suitable small screwdriver.
Various types of electrical connector have seals installed intern ally or externally to prevent moisture ingress. These normally
do not have to be removed but make sure that they are installed when the electrical connectors are connected.
The illustrations show examples of each tip used on different types of electrical connector(s). There are a large number of
different types of electrical connector us ed on vehicles therefore only one example using each tip is shown. Technicians
experience and judgement will dictate whic h type of tip should be used for those electrical connector(s) which are not
shown. Care should be exercised to av oid further damage when removing the te rminals from the electrical connector.
• NOTE: Examples of the extraction tips and anti-backout tips.