1998 JAGUAR X308 module

Module Communications Network - Rear Auxiliary Junction Box
Removal and Installation
Removal

1. Disconnect battery ground cable; refer to 86.15.19.
2. Open bonnet and fit body pa intwork protection sheets.

3. Remove positive supply power cable.
1. Displace cover.
2. Remove nut.
3. Disconnect cable.

4. Remove fuse box fro m mounting panel.
1. Remove nuts.
Reposition fuse box for access to connectors.

5. Remove fuse box.
Identify and disconnect harness connectors.
6. Remove fuses and relay.

Multifunction Electronic Modules - Module Controlled Functions
Description and Operation

Body Processor Module (BPM)
ItemPart NumberDescription
1—Body Processor Module
2—Front Door Control Module
3—Rear Door Control Module
4—Roof Console Switch Module
5—Center Console Switch Module

The BPM electronically controls many vehicle functions. It responds when a switch is actuated by providing output signals to
the appropriate devices, either di rectly or indirectly via relays. In addition the BPM establishes an ISO network link with the
Security and Locking Control Module (SLC M) and utilizes the SCP network to exchange data between the body system
modules.
The following tables are publis hed for guidance purposes and only provide a rough indication of the correlation between
circuit inputs and outputs; due to the complexity and necess ary functional interaction required for the vehicle there are
many circuits where inpu ts and outputs overlap.
Malfunction of modules must always be analyzed using the PDU as recommended in Diagnosis and Testing.
Inputs/outputs
• NOTE: The reverse lights and rear fog lights are NOT controlled by the BPM; refer to Security and Locking Control Module.
Exterior lights circuit
BPM inputs from: BPM outputs to:
Front fog switch Rear fog switch Low beam switch High beam switch Side lights switch Headlamp flash switch Direction indicator switch Hazard switch
Front fog relay Low beam relay High beam relay Side marker and license plate relay Side and tail lights Direction indicators Hazard status bulb Indicators via SCP Front fog Low beam High beam Side light Direction Hazard warning Status LEDS Front fog Rear fog

Driver Door Module (DDM)
Interior lights circuit
BPM inputs from: BPM outputs to:
Header console courtesy light switch
SCPInstrument and switch illumination. Fade 1 (Header console courtesy lamps) Fade 2 (E-post courtesy lamps) Map lights Sun visor lamps Glovebox lamp Trunk lamps
Washer / wiper circuit
Wiper park switch Low screen wash switch Wiper slow speed switch Wiper fast speed switch Wiper intermittent switch Wash/wipe switch
Power wash relay Wiper motor run Screen wash pump Wiper fast/slow speed
Ignition circuit
Ignition position Auxiliary position Transit relay Mirror fold out Mirror fold flat
Central door locking circuit
Central locking button Valet switch SCP (door modules)
Central door locking relay SCP (door modules, security and locking control
module)
Sun roof ECU
Security system circuit
Hood security switch Horn switches Central locking button SCP (door modules, security and locking control
module)
ISO link (key transponder module)
Horn relay Active security sounder Passive security sounder Security status LED Central door locking relay SCP (door modules, security and locking control
module)
ISO link (key transponder module)
Steering column adjustment circuit
Column adjustment switchesColumn tilt motor Column reach motor
Gear shift interlock circuit
Neutral switch J-gate not in park Keylock solenoid Gearshift interlock solenoid
Seat heaters circuit
Seat heater switchesSeat heater relay Status LED
Seat buckle circuit
Seat buckleAudible warning SCP

The DDM is an integral part of the vehi cle security system. In conjunction with the BPM and SLCM via the SCP network, it
controls door locking, interior lighting, door window position and door mirror position. The DDM also provides an interface
via the SCP network, between the driver door switchpack and all door control modules which permits remote control of all
door window positions.
The following table is published for guidance purp oses only; for fault finding, always use the PDU as recommended in
Diagnosis and Testing:
Inputs/outputs
Passenger Door Module (PDM)
The Passenger Door Module provides local control of the pass enger door window position and puddle lamp. Door locking and unlocking is controlled by the BPM via the CDL relay.
The following table is published for guidance purp oses only; for fault finding, always use the PDU as recommended in
Diagnosis and Testing:
Inputs/outputs
DDM inputs from:DDM outputs to:
Driver door switch Driver door switchpack (window switches) Driver door switchpack (mirror switches) Driver door switchpack (memory switches)
Driver door window lift motor Driver rear door window lift motor via SCP Passenger door window lift motor via SCP Passenger rear door window lift motor via SCP Driver door mirror motors Passenger door mirror motors via SCP Driver seat module via SCP
PDM inputs from:PDM outputs to:
Passenger door switch Passenger window lift switch DDM via SCP
Passenger door actuator unlock Passenger door actuator superlock Puddle lamp Passenger door window lift motor BPM via SCP

Driver Rear Door Module (DRDM)
The Driver Rear Door Module provides local control of the driver rear door window position and puddle lamp. Door locking
and unlocking is controlled by the BPM via the CDL relay.
The following table is published for guidance purp oses only; for fault finding, always use the PDU as recommended in
Diagnosis and Testing:
Inputs/outputs
Passenger Rear Door Module (PRDM)
The Passenger Rear Door Module provides local control of th e passenger rear door window position and puddle lamp. Door
locking and unlocking is controlled by the BPM via the CDL relay.
The following table is published for guidance purp oses only; for fault finding, always use the PDU as recommended in
Diagnosis and Testing:
Inputs/outputs
Roof Console Switch Module (RCSM)
DRDM inputs from:DRDM outputs to:
Driver rear door switch Driver rear window lift switch DDM via SCP
Driver rear door actuator unlock Driver rear door actuator superlock Puddle lamp Driver rear door window lift motor BPM via SCP
PRDM inputs from:PRDM outputs to:
Passenger rear door switch Passenger rear window lift switch DDM via SCP
Passenger rear door actuator unlock Passenger rear door actuator superlock Puddle lamp Passenger rear door window lift motor BPM via SCP

The Roof Console Switch Module comprises integral switches which control the following:
Driver and passenger map lights
Main courtesy light
Garage door opener (where applicable)
The following table is published for guidance purp oses only; for fault finding, always use the PDU as recommended in
Diagnosis and Testing:
Inputs/outputs
Center Console Switch Module (CCSM)
RCSM inputs from:RCSM outputs to:
Illumination enable (BPM) Interior light fade 1 (BPM) BPM (master illumination light switch)

Parts List
The Center Console Switch Module comprises the integral switches identified in the illustration above. All switches with the
exception of the Traction Control Switch are connected to BPM inputs. The Traction Control Switch is connected to an ABS
unit input.


ItemPart NumberDescription
1—Central locking switch
2—Valet switch
3—Left hand seat heater switch (where fitted)
4—Right hand seat heater switch (where fitted)
5—Traction control switch (where fitted)
6—Hazard warning switch