2010 JAGUAR XFR wiring

Module Communications Network - Communications Network
Diagnosis and Testing

Principles of Operation Published: 25-Nov-2013

For a detailed description of the Communications Network, refer to the relevant Description and Operation sections in the
workshop manual. REFER to: (418-00 Module Communications Network)

Communications Network (Description and Operation),
Communications Network (Description and Operation), Communications Network (Description and Operation).
Inspection and Verification

CAUTIONS:


Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee
confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.


Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.

1. Verify the customer concern

2. Visually inspect for obvious signs of damage and system integrity



3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step
4. If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index

Symptom Chart

Symptom Possible Causes Action MOST network fault - Touch screen
display displaying flashing logo
MOST ring broken after the touch screen display
Control module on MOST network power or ground circuit open
circuit, high resistance
Control module on MOST network internal failure
GO to
Pinpoint Test
B. MOST network fault - Touch screen
display blank
MOST ring broken between the information and entertainment
control module and the touch screen display
Information and entertainment control module or touch screen
display power or ground circuit open circuit, high resistance
Wake up signal not received by the information and
entertainment control module
Information and entertainment control module or touch screen
display internal failure
GO to
Pinpoint Test
H. Controller Area Network (CAN)

Control Module Connections to the CAN Harness

Control modules are connected to the CAN harness either in a 'loop' or 'spur' configuration. In the 'loop' type configuration the
CAN harness loops into the module (via two connector pins) and then loops out of the module (via another two connector
pins). In the 'spur' type configuration, a harness spur is spliced into the main 'backbone' of the CAN harness and the module is
connected to the harness spur via two connector pins. Electrical

Fuses (refer to electrical guide)
Wiring harness
Correct engagement of electrical connectors
Loose or corroded connections
Routing of fibre optic harnesses
Correct engagement of optical connectors
Correct placement of optical connectors (ring order)
Correct assembly of optical connectors (backout, etc)
Damage to fibre (chafing, abrasion, kinking, cuts, etc) Visual Inspection
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DTC Description Possible Causes Action P123014
Fuel Pump Low
Speed
Malfunction
(VLCM)
High Side output not
driven - Diagnosis
feedback indicates output
is short to ground, open
circuit Refer to the electrical circuit diagrams and check fuel pump
delivery module for short to ground, open circuit P123093
Fuel Pump Low
Speed
Malfunction
(VLCM)
High Side output not
driven - Diagnosis
feedback indicates output
is at open load or short
to power Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check fuel pump delivery module for short to
power, open circuit P134611
Fuel Level Sensor
B Circuit
Fuel level sensor B
analogue input circuit -
short to ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check fuel level sensor B analogue input
circuit for short to ground P134615
Fuel Level Sensor
B Circuit
Fuel level sensor B
analogue input circuit -
short to power, open
circuit Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check fuel level sensor B analogue input
circuit for short to power, open circuit P162413 Anti-theft System
Anti-theft signal circuit
from CJB - open circuit Refer to the electrical circuit diagrams and check anti-theft signal
circuit from CJB for open circuit C111A11 Right Stop Lamp
Right stomp lamp control
circuit - short to ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check right stomp lamp control circuit for
short to ground C111A12 Right Stop Lamp
Right stomp lamp control
circuit - short to power Refer to the electrical circuit diagrams and check right stomp
lamp control circuit for short to power C111A13 Right Stop Lamp
Right stomp lamp control
circuit - open circuit Refer to the electrical circuit diagrams and check right stomp
lamp control circuit for open circuit C111B11 Left Stop Lamp
Left stomp lamp control
circuit - short to ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check left stomp lamp control circuit for
short to ground C111B13 Left Stop Lamp
Left stomp lamp control
circuit - open circuit Refer to the electrical circuit diagrams and check left stomp lamp
control circuit for open circuit C112011 Reversing lamp
Reverse lamp control
circuit - short to ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check reverse lamp control circuit for short
to ground C112012 Reversing lamp
Reverse lamp control
circuit - short to power Refer to the electrical circuit diagrams and check reverse lamp
control circuit for short to power C112013 Reversing lamp
Reverse lamp control
circuit - open circuit Refer to the electrical circuit diagrams and check reverse lamp
control circuit for open circuit C1120-15
Reversing lamp -
circuit short to
battery or open
Reverse lamp control
circuit - short circuit to
power, open circuit, high
resistance
Refer to the electrical circuit diagrams and check reverse
lamp control circuit for short circuit to power, open circuit,
high resistance. Repair wiring harness as required. Clear
DTC and retest B100A51
Fuel Pump
Authorisation
RJB fault
Low speed CAN fault
Instrument cluster fault Check power and ground supplies to RJB. Check CAN
communications between RJB and instrument cluster. Check
power and ground supplies to instrument cluster B100A62
Fuel Pump
Authorisation
Low speed CAN fault
RJB fault
Instrument cluster fault
Incorrect module
installed (RJB/Instrument
cluster) Check CAN communications between RJB and instrument cluster.
Check power and ground supplies to RJB and instrument cluster.
Confirm correct module installed. Re-synchronise ID by
re-configuring the RJB as a new module. Check CAN network for
interference/EMC related issues

DTC Description Possible Causes Action B10DE15
Low Fuel Warning
Switch
Diesel run-dry switch
analogue input circuit -
short to power, open
circuit Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check diesel run-dry switch analogue input
circuit for short to power, open circuit B111211 Park Aid Ignition
Parking aid ignition
supply circuit - short to
ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check parking aid ignition supply circuit for
short to ground B111212 Park Aid Ignition
Parking aid ignition
supply circuit - short to
power Refer to the electrical circuit diagrams and check parking aid
ignition supply circuit for short to power B111511
High Mounted
Stop Lamp
Control
High mounted stop lamp
control circuit - short to
ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check high mounted stop lamp control circuit
for short to ground B111611 Left Tail Lamp
Left hand tail lamp
control circuit - short to
ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check left hand tail lamp control circuit for
short to ground B111711 Right Tail Lamp
Right hand tail lamp
control circuit - short to
ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check right hand tail lamp control circuit for
short to ground B111A11
Number Plate
Lamps
Right hand or left hand
number plate lamp
control circuits - short to
ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check right hand and left hand number plate
lamp control circuits for short to ground B111A12
Number Plate
Lamps
Right hand or left hand
number plate lamp
control circuits - short to
power Refer to the electrical circuit diagrams and check right hand and
left hand number plate lamp control circuits for short to power B111A13
Number Plate
Lamps
Right hand or left hand
number plate lamp
control circuits - open
circuit Refer to the electrical circuit diagrams and check right hand and
left hand number plate lamp control circuits for open circuit B111A-15
Number Plate
Lamps - circuit
short to battery
or open
Right or left side licence
plate lamp(s) inoperative
Right or left side licence
plate lamp control
circuits - short circuit to
power, open circuit, high
resistance
Refer to the electrical circuit diagrams and check right
side and left side licence plate lamp control circuits for
short circuit to power, open circuit, high resistance. Repair
wiring harness as required. Clear DTC and retest B111D12
Boot/Trunk Motor
Open
Luggage compartment lid
latch actuator control
circuit - short to power Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check luggage compartment lid latch
actuator control circuit for short to power B111D14
Boot/Trunk Motor
Open
Luggage compartment lid
latch actuator control
circuit - short to ground,
open circuit Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check luggage compartment lid latch
actuator control circuit for short to ground, open circuit B111E11 Boot/Trunk Lamps
Luggage compartment
lamp control circuit -
short to ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check luggage compartment lamp control
circuit for short to ground B111E12 Boot/Trunk Lamps
Luggage compartment
lamp control circuit -
short to power Refer to the electrical circuit diagrams and check luggage
compartment lamp control circuit for short to power

DTC Description Possible Causes Action B111E13 Boot/Trunk Lamps
Luggage compartment
lamp control circuit -
open circuit Refer to the electrical circuit diagrams and check luggage
compartment lamp control circuit for open circuit B111E-15 Boot/Trunk Lamps
- circuit short to
battery or open
Luggage compartment
lamp inoperative
Luggage compartment
lamp control circuit -
short circuit to power,
open circuit, high
resistance
Refer to the electrical circuit diagrams and check luggage
compartment lamp control circuit for short circuit to
power, open circuit, high resistance. Repair wiring harness
as required. Clear DTC and retest B112312
Restraints
Ignition Relay
High Side output not
driven - diagnosis
feedback indicates output
is short to power Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check restraints ignition relay output for
short to power B112314
Restraints
Ignition Relay
High Side output not
driven - diagnosis
feedback indicates output
is short to ground, open
circuit Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check restraints ignition relay output for
short to ground, open circuit B112393
Restraints
Ignition Relay
High Side output not
driven - diagnosis
feedback indicates output
is at open load or short
to power Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check restraints ignition relay output for
open load or short to power B112411
Lamp Fade
Control
Interior lamp fade control
circuit - short to ground Refer to the electrical circuit diagrams and check interior lamp
fade control circuit for short to ground B112412
Lamp Fade
Control
Interior lamp fade control
circuit - short to power Refer to the electrical circuit diagrams and check interior lamp
fade control circuit for short to power B113C12
Hazard Switch
Illumination
Hazard switch
illumination control
circuit - short to power Refer to the electrical circuit diagrams and check hazard switch
illumination control circuit for short to power B113C14
Hazard Switch
Illumination
Hazard switch
illumination control
circuit - short to ground,
open circuit Refer to the electrical circuit diagrams and check hazard switch
illumination control circuit for short to ground, open circuit B113E12
External
Boot/Trunk
Release Switch
External luggage
compartment lid release
switch digital input circuit
- short to power Refer to the electrical circuit diagrams and check external
luggage compartment lid release switch digital input circuit for
short to power B113E23
External
Boot/Trunk
Release Switch
External luggage
compartment lid release
switch digital input circuit
- signal stuck low Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check external luggage compartment lid
release switch digital input circuit for short to ground B11D949 Vehicle Battery
Vehicle battery
damaged/worn out Check battery is in fully charged and serviceable condition using
the Midtronics battery tester and the battery care manual B11DB49
Battery
Monitoring
Module
Internal electronic failure Suspect the battery monitoring module. Check and install a new
module as required, refer to the new module/component
installation note at the top of the DTC Index B11DB87
Battery
Monitoring
Module
Battery monitoring
module connector
dis-connected/poor
connection Battery
monitoring
module to RJB LIN circuit
- open circuit Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. If additional DTCs
B108783, B108786, B108787 are logged, suspect the RJB. Check
and install a new RJB as required, refer to the new
module/component installation note at the top of the DTC Index.
If additional DTCs B108783, B108786, B108787 are NOT logged,
check for good/clean contact at battery monitoring module

DTC Description Possible Causes Action Battery monitoring
module to battery
positive monitor circuit -
open circuit
Battery monitoring
module/RJB failure connector, refer to electrical circuit diagrams and check battery
monitoring module to RJB LIN circuit and battery monitoring
module to battery positive monitor circuit for open circuit. Clear
DTC and repeat automated diagnostic procedure using
manufacturer approved diagnostic system. If DTC remains
suspect the battery monitoring module, check and install a new
battery monitoring module as required, refer to the new
module/component installation note at the top of the DTC Index B123A11
Left Front Turn
Indicator
Left front turn signal
lamp control circuit -
short to ground Refer to the electrical circuit diagrams and check left front turn
signal lamp control circuit for short to ground B123A12
Left Front Turn
Indicator
Left front turn signal
lamp control circuit -
short to power Refer to the electrical circuit diagrams and check left front turn
signal lamp control circuit for short to power B123A13
Left Front Turn
Indicator
Left front turn signal
lamp control circuit -
open circuit Refer to the electrical circuit diagrams and check left front turn
signal lamp control circuit for open circuit B123A-15
Left Front Turn
Indicator - circuit
short to battery
or open
Left front turn signal
lamp control circuit -
short circuit to power,
open circuit, high
resistance
Refer to electrical circuit diagrams and check left front
turn signal lamp control circuit for short circuit to power,
open circuit, high resistance. Repair wiring harness as
required. Clear DTC and retest B123B11
Right Front Turn
Indicator
Right front turn signal
lamp control circuit -
short to ground Refer to the electrical circuit diagrams and check right front turn
signal lamp control circuit for short to ground B123B12
Right Front Turn
Indicator
Right front turn signal
lamp control circuit -
short to power Refer to the electrical circuit diagrams and check right front turn
signal lamp control circuit for short to power B123B13
Right Front Turn
Indicator
Right front turn signal
lamp control circuit -
open circuit Refer to the electrical circuit diagrams and check right front turn
signal lamp control circuit for open circuit B123B-15
Right Front Turn
Indicator - circuit
short to battery
or open
Right front turn signal
lamp control circuit -
short circuit to power,
open circuit, high
resistance
Refer to electrical circuit diagrams and check right front
turn signal lamp control circuit for short circuit to power,
open circuit, high resistance. Repair wiring harness as
required. Clear DTC and retest B124711
Left Rear Turn
Indicator
Left rear turn signal lamp
control circuit - short to
ground Refer to the electrical circuit diagrams and check left rear turn
signal lamp control circuit for short to ground B124712
Left Rear Turn
Indicator
Left rear turn signal lamp
control circuit - short to
power Refer to the electrical circuit diagrams and check left rear turn
signal lamp control circuit for short to power B124713
Left Rear Turn
Indicator
Left rear turn signal lamp
control circuit - short to
power, open circuit Refer to the electrical circuit diagrams and check left rear turn
signal lamp control circuit for open circuit B1247-15
Left Rear Turn
Indicator - circuit
short to battery
or open
Left rear turn signal lamp
control circuit - short
circuit to power, open
circuit, high resistance
Refer to electrical circuit diagrams and check left rear turn
signal lamp control circuit for short circuit to power, open
circuit, high resistance. Repair wiring harness as required.
Clear DTC and retest B124811
Right Rear Turn
Indicator
Right rear turn signal
lamp control circuit -
short to ground Refer to the electrical circuit diagrams and check right rear turn
signal lamp control circuit for short to ground

DTC Description Possible Causes Action B124812
Right Rear Turn
Indicator
Right rear turn signal
lamp control circuit -
short to power Refer to the electrical circuit diagrams and check right rear turn
signal lamp control circuit for short to power B124813
Right Rear Turn
Indicator
Right rear turn signal
lamp control circuit -
open circuit Refer to the electrical circuit diagrams and check right rear turn
signal lamp control circuit for open circuit B1248-15
Right Rear Turn
Indicator - circuit
short to battery
or open
Right rear turn signal
lamp control circuit -
short circuit to power,
open circuit, high
resistance
Refer to electrical circuit diagrams and check right rear
turn signal lamp control circuit for short circuit to power,
open circuit, high resistance. Repair wiring harness as
required. Clear DTC and retest B126113
Fuel Flap/Door
Release Switch
Fuel filler flap digital
input signal circuit - open
circuit Refer to the electrical circuit diagrams and check fuel filler flap
digital input signal circuit for open circuit B1A7911 Rear Fog Lamp
Rear fog lamp control
circuit - short to ground Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check rear fog lamp control circuit for short
to ground B1A7912 Rear Fog Lamp
Rear fog lamp control
circuit - short to power Refer to the electrical circuit diagrams and check rear fog lamp
control circuit for short to power B1A7913 Rear Fog Lamp
Rear fog lamp control
circuit - open circuit Refer to the electrical circuit diagrams and check rear fog lamp
control circuit for open circuit B1C5512 Horn Relay
Horn control circuit -
short to power Refer to the electrical circuit diagrams and check horn control
circuit for short to power B1C5514 Horn Relay
Horn control circuit -
short to ground, open
circuit Refer to the electrical circuit diagrams and check horn control
circuit for short to ground, open circuit B1C8312 Rear Defog Relay
High Side output not
driven - diagnosis
feedback indicates output
is short to power Refer to the electrical circuit diagrams and check heated rear
window power supply circuit for short to power B1C8314 Rear Defog Relay
High Side output not
driven - diagnosis
feedback indicates output
is short to ground, open
circuit Refer to the electrical circuit diagrams and check heated rear
window power supply circuit for short to ground, open circuit B1C8393 Rear Defog Relay
High Side output not
driven - diagnosis
feedback indicates output
is at open load or short
to power Carry out any pinpoint test associated with this DTC using the
manufacturer approved diagnostic system. Refer to the electrical
circuit diagrams and check heated rear window power supply
circuit for open load and short to power B1C9112
Fuel Flap/Door
Lock Relay Coil
Circuit
Fuel filler flap locking
motor control circuit -
short to power Refer to the electrical circuit diagrams and check fuel filler flap
locking motor control circuit for short to power B1C9114
Fuel Flap/Door
Lock Relay Coil
Circuit
Fuel filler flap locking
motor control circuit -
short to ground, open
circuit Refer to the electrical circuit diagrams and check fuel filler flap
locking motor control circuit for short to ground, open circuit B1D3512 Hazard Switch
Hazard warning lamp
switch digital input circuit
- short to power Refer to the electrical circuit diagrams and check hazard warning
lamp switch digital input circuit for short to power

Wiring Harnesses - Wiring Harness
Description and Operation

Introduction Published: 21-Jan-2014

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. Repairs may only be made to cables and connectors which have been mechanically, not electrically damaged. It also
applies where the whole extent of the damage can be clearly identified and rectified.
Care and neatness are essential requirements in making a perfect repair.

Caution:

This harness repair guide, does not approve repairs to any of the following circuits:
1. Any media orientated system transport network harnesses.
2. Supplement restraint system (SRS) firing circuits (Air bags).
3. 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. 4. Screened cables, leads and wiring harness(s).

If any harness(s) with defective electrical connector terminals or wires from the above circuits are a concern, new
components must be installed.

Repair Components


CAUTION: Where the repair procedure indicates 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 components 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
A suitable heat source, for shrinking heat shrink sleeves will be required.

The pre-insulated diamond grip range of electrical connector terminals and in-line, butt splice connectors are the only
acceptable product for the repairs of wiring harnesses. The butt connectors not only grip the wire but also the insulation,
making a very secure joint.

If an electrical connector terminal is not available approval for the repair is NOT given and in these circumstances a new wiring
harness must be installed.

Pre-Terminated Wiring Harness(s) and Butt Splice Connectors

The pre-terminated wiring harness(s) are supplied with the insulation in one of three colors, red, blue or yellow. The colors do
not apply to any particular circuit but to the harness wire size. See the Relationship Table in the Repair Method section.

Butt splice connectors are also supplied with red, blue or yellow coverings, which must be matched to the pre-terminated
wiring harness insulation color.

Pre-Terminated Wiring Harness(s)



















































The illustration shows:

The pre-terminated wiring harness(s) which are available via Jaguar/Land Rover authorised parts.
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 www.JagDocs.com