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10 TCM 11 Pedestrian protection system control module 12 Electric park brake module 13 RCM (restraints control module) 14 Adaptive damping control module CONTROL DIAGRAM - MOST RING



Item Description P = MOST ring 1 Entertainment system control module 2 Software download socket 3 Touch Screen Display (TSD) 4 Portable audio interface 5 Bluetooth® telephone module

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.

essential for prevention of moisture ingress that a sealed pre-terminated wiring harness must be used where a sealed terminal
was removed.


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.

Two sizes of heat shrink sleeving are available. 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 diameter sleeve with the yellow butt splice connectors.

For ease and speed, some of the pre-terminated wiring harness(s) may already have the insulation partly stripped at the splice
end. If the repair requires insulation to be stripped from the cable, refer to the Relationship Table for the correct length of
insulation to be stripped.

The Pre-Terminated Wiring Harness(s) illustration 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 connector 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 available for maintaining the wiring harness cable identification on the pre-terminated wiring
harness. Place the correct colored sleeve(s) over the pre-terminated wiring harness insulation as near to the electrical
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 electrical connector terminal.

List of Parts

Description Part Number Quantity Pre-Terminated Wiring Harness(s) 418-066 to 418-103
inclusive 10 each Glue Lined Heat Shrink Pack – small diameter 418-104 25 per pack Glue Lined Heat Shrink Pack – larger diameter 418-105 10 per pack Case Assembly Comprising – carry case, lid, inner lid, base, insert, trays foam spacers 418-106 1 Butt Splice Connector – Red 418-107 50 per pack Butt Splice Connector – Blue 418-108 50 per pack Butt Splice Connector – Yellow 418-109 20 per pack Sleeve Identification Pack – for Red insulation 418-112 500 Sleeve Identification Pack – for Blue insulation 418-113 500 Sleeve Identification Pack – for Yellow insulation 418-114 500 Harness repair components can be ordered from Jaguar/Land Rover authorised parts.

Repair Tools
The wiring harness repair tools comprises:
Crimping pliers
A wire cutter and insulation stripper
An electrical connector terminal extraction handle and tips
Extraction Handle and Tips

The extraction handle, in conjunction with the correct tip, is used to remove a terminal from an electrical connector. Each tip is
marked with an identification letter, A to K inclusive. Each tip has been specially designed to extract a particular type 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.

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 the quick identification of electrical connectors and faulty pin
terminal(s).

Reference can also be made to the vehicle Electrical Guides, held 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

CABLE RANGE SPLICE STRIP LENGTH 0.35 mm² to 1.50 mm² RED 6.00 to 7.00 mm 1.00 mm² to 2.50 mm² BLUE 6.00 to 7.00 mm 4.00 mm² to 6.00 mm² YELLOW 9.00 to 9.50 mm Electrical Connector Terminal Extraction

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 these 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. Most can be released by carefully using a suitable small screwdriver.

Various types of electrical connector have seals installed internally 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 used on vehicles therefore only one example using each tip is shown. Technicians
experience and judgement will dictate which type of tip should be used for those electrical connector(s) which are not shown.
Care should be exercised to avoid further damage when removing the terminals from the electrical connector.


NOTE: Examples of the extraction tips and anti-backout tips.

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15. NOTE: See illustration: Stripping Insulation

From the Relationship Table, find the correct length of insulation to be stripped from the pre-terminated wiring harness
and set the adjustable cable length stop to the correct length. Place the pre-terminated wiring harness in the wire
stripper and remove the insulation.
Put the cable identification sleeve(s) on to the wiring harness with the main cable colour nearest to the terminal.
During this next step do not over tighten. Place the selected butt splice connector in the crimping tool, matching the
aperture and the butt connector colours. Make sure that the window indentation in the butt connector is resting over
the guide bar on the lower jaw. Partially close the grip until the butt connector is securely held in the aperture. This will
give support to the butt connector while the pre-terminated wiring harness is inserted into it.

NOTE: See illustration: Splice Correctly Located

Insert the pre-terminated wiring harness into the butt connector and make sure that the wire is against the wire stop.
Close the grip firmly, crimping the lead to the butt connector. When the handles have been completely closed the butt
connector will be freed from the tool as the handles are released. If the handles have not been completely closed then
the jaws will hold the butt connector and it cannot be removed from the tool until the crimp is fully made by closing the
handles completely.
Make sure that the harness cable has been squarely cut and the correct length of insulation removed. If more than one
splice is needed the butt connectors must be not be crimped to the wiring harness at the same distance from the
connector. The splices must be staggered to prevent a bulk of splices in the same area of the wiring harness.
It is preferable to cover the butt splice joint with heat shrink sleeve. This is desirable not essential, except where the
electrical connector is a sealed electrical connector. Use the smaller diameter sleeve for red and blue pre-terminated
wiring harness(s) and the large diameter sleeve for the yellow pre-terminated wiring harness(s). It is advisable to place
the heat shrink over the completed joint but in some instances the sleeve will not pass over the terminal. Check, and if
required, place the correct size sleeve onto the harness cable or pre-terminated wiring harness before crimping the butt
splice to the wiring harness.
Place the harness cable into the butt splice with the splice window over the guide bar. Make sure that the cable harness
wire is against the stop in the butt splice, crimp the butt splice connector to the wiring harness.
Gently pull the harness cables each side of the butt splice to make sure that a secure joint has been made.

WARNING: Do not use a naked flame in areas where fuel or oil have been spilt. Clean the area of residual oil and
fuel and wait until the fuel spill has fully evaporated.
CAUTIONS:


When using a heat source make sure that it is localised and causes no damage to surrounding materials.


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.
Using a suitable heat source, shrink the sleeve over the butt splice.
If further pre-terminated wiring harness(s) are to be installed to the same electrical connector, make sure that the lead
is cut at a different length to the previous joint. This makes sure that the splices will, where possible, be staggered on
the wiring harness and prevent a bulk of splices in one area.
When all of the splices have been made, fit the terminal(s) to the electrical connector, taking care that the terminals
are correctly orientated.
Install the wiring harness cover and secure with adhesive electrical tape. Do not cover the wiring harness right to the
electrical connector as the terminals must have a little movement and not be firmly bound to the electrical connector or
wiring harness. Make sure that the cable identification sleeve(s) are showing at the wiring harness electrical connector.
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5. Remove the bluetooth module.




















Installation

1. Install is the reverse of removal.
Tighten to 10 Nm. www.JagDocs.com

7 Television (TV) tuner 8 Portable audio interface 9 Blue tooth phone module 10 Software download socket

Module Network System Function Vehicle Location
Steering wheel
clockspring LIN Passes digital messages from the steering wheel
audio switches to the instrument cluster. Behind the steering wheel,
on the upper steering
column.
Instrument cluster LIN Receives digital signals from other vehicle systems. On the driver's side of the
instrument panel.
Battery backed sounder LIN Activated by CJB when alarm trigger is received. In the LH side of the engine compartment, near the
bulkhead.
CJB LIN Controls body functions and power distribution. On the RH 'A' pillar.
RJB LIN Controls body functions and power distribution. On the RH of the luggage compartment.
Battery monitoring
system module

Intrusion detection
module LIN Monitors the condition and charge of the vehicle
battery.

LIN Detects movement in the vehicle interior and
activates the anti-theft system. On the vehicle battery
positive terminal in the
luggage compartment.
In the front overhead
console.
Rain/light sensor LIN Detects ambient light levels and moisture on the
windscreen for operation of the automatic
headlamps and wiper systems.
Start control module LIN Used to identify the Smart Key - component of the
keyless start system.
Rear view camera LIN Passes digital images data from the rear view
camera to the RJB On the inside of the
windshield behind the interior
rear view mirror.
In the lower instrument panel
on the driver's side.
In the luggage compartment
lid trim finisher.
Driver's window switch LIN Controls operation of the driver's window. In the driver's door trim
panel.
Electronic transmission
selector LIN Sends selector position to the TCM. In the floor console. TCM LIN Receives selector position information to control the Inside the transmission and


Information control
module

Media Oriented
System Transport
(MOST) transmission.

Contains controls for the entertainment system and
gateway between audio system and other vehicle
systems. accessible by removal of the
fluid pan.
In the instrument panel
below the integrated control
panel.
Integrated control
panel MOST Contains controls for the entertainment system. In the instrument panel.
Digital Audio Broadcast MOST Receives digital radio broadcasts. In the LH side of the luggage (DAB) receiver (SDARS
NAS only)
Bluetooth® phone
module compartment, above the
keyless vehicle module.
MOST Controls operation of the Bluetooth® phone system. Below the LH front seat, adjacent to the portable
audio module.
Amplifier/tuner MOST Provides amplification for the entertainment systems In the LH side of the luggage and reception of radio RF broadcasts.
Navigation computer MOST Reads map data from a DVD (digital versatile disc)
to calculate and display visual route guidance
information via the TSD and audible guidance via the
amplifier to the driver. compartment.
In the LH side of the luggage compartment.
Touch Screen Display
(TSD) MOST Provides the driver interface to the entertainment,
navigation and driver personalization functions. In the center of the
instrument panel.
TV tuner MOST Controls the reception of television signals and
audio/visual inputs.
Portable Audio Module MOST Controls the auxiliary inputs for additional audio
inputs via the portable audio interface. In the LH side of the luggage compartment.
Below the LH front seat, adjacent to the Bluetooth®
phone module.
MOST diagnostic
connector MOST Allows for diagnostic fault detection of the MOST
ring. Below the air ducting in the
floor console.
Refer to Communications Network section for further details.
Refer to: Communications Network (418-00 Module Communications Network, Description and Operation).

6. Locate climate seat module, (refer to Electrical Information - Electrical Reference Library, contained in TOPIx) for
guidance on how to gain access to the connector(s)
7. Locate and disconnect relevant connector prior to pin test

8. Using ohm-meter to probe each heat/cooled unit pins (at rear of connector), reading should achieve no greater than 10
ohms after 1 minute (initial fluctuations in readings may occur using ohm-meter, post 1 minute readings will have
stabilized)
Connector and Pin Information
X250 (All Model Years) Terminal ID 1 2 3 4 7 8 9 10 Climate Seat
Unit Location Right
Cushion Right Cushion
Right
Backrest Right
Backrest Left Cushion Left Cushion
Left
Backrest Left Backrest Wiring Colour -
Left Hand
Drive Vehicles GY-BU -
Grey/Blue BU - Blue BU-BN -
Blue/Brown WH - White YE-BU - Yellow/Blue BU-OG -
Blue/Orange GY-VT -
Grey/Violet WH-VT -
White/Violet Wiring Colour -
Right Hand
Drive Vehicles YE-BU - Yellow/Blue BU-OG -
Blue/Orange GY-VT -
Grey/Violet WH-VT -
White/Violet GY-BU -
Grey/Blue BU - Blue BU-BN -
Blue/Brown WH - White
1. If any unit reads greater than 10 ohms, replace only that defective unit

2. If all units read less than 10 ohms but faults are still suspected, do not replace any units. Refer to step 4 below

3. As a final check, when a faulty unit has been identified strip the seat to access unit connector, REFER to: Seats
(501-10, Removal & Installation) and re-check ohm reading to confirm greater than 10 ohms prior to removing unit

4. In cases where the above diagnostic routine does NOT identify a failed unit, please refer to "Over Temperature and
Fluid/Air Leak Diagnostics" below. Also check for any live technical service bulletins referring to the seat climate system

Seat Climate Control Module/Seat Climate Assembly - Further Diagnostics

In the event of suspected climate seat faults use the pinpoint tests detailed below
Connector Checks

First, check the integrity of the three seat climate control module harness connectors:

1. Disconnect each connector
2. Inspect each connector for cracks and breaks, replace as required

3. Check the integrity of connector terminals for bent terminals, backed-out or badly crimped wires. Rectify as required

4. Reconnect all connectors and retest. If seat climate functions are still faulty, note any DTCs that have been logged by
the seat climate control module(s) and refer to the table and pinpoint tests below:


DTC Logged Pinpoint Test Required
NOTE: Where DTCs are marked in bold, this means that there are two possible diagnostic processes that
may be applied to resolve these faults. Check the listings below to reference an alternative set of pinpoint
tests for these DTCs

B10B9-13 Blower Control - Circuit open B10B9-
4B Blower Control - Over temperature B1157-
13 Blower Control B - Circuit open B1157-4B
Blower Control B - Over temperature
B120E-4B Right Thermal Electric Device Control - Over temperature
B1224-4B Left Thermal Electric Device Control - Over temperature
B122A-11 Right Seat Cushion Blower Speed Sensor - Circuit short to ground
B122A-12 Right Seat Cushion Blower Speed Sensor - Circuit short to battery
B122B-11 Right Seat Back Blower Speed Sensor - Circuit short to ground
B122B-12 Right Seat Back Blower Speed Sensor - Circuit short to battery
B122C-11 Left Seat Cushion Blower Speed Sensor - Circuit short to ground
B122C-12 Left Seat Cushion Blower Speed Sensor - Circuit short to battery
B122D-11 Left Seat Back Blower Speed Sensor - Circuit short to ground
B122D-12 Left Seat Back Blower Speed Sensor - Circuit short to battery GO to Pinpoint
Test A.
NOTE: Where DTCs are marked in bold, this means that there are two possible diagnostic processes that
may be applied to resolve these faults. Check the listings below to reference an alternative set of pinpoint
tests for these DTCs
B120E-13 Right Thermal Electric Device Control - Circuit open GO to Pinpoint
Test B.

PINPOINT TEST B : CLIMATE SEATS ASSEMBLY - THERMAL ELECTRIC DEVICE (TED) DIAGNOSTICS TEST
CONDITIONS DETAILS/RESULTS/ACTIONS B1: CLIMATE SEATS ASSEMBLY - TED SENSOR CIRCUIT RESISTANCE CHECKS AT SEAT TO VEHICLE CONNECTOR 1 Uncouple connector C3HS03B from the seat climate control module 2 Check the resistance of the climate seats TED sensor circuits at connector C3HS03B For right-side seat cushion TED sensor circuits, check resistance at pins 2 and 3
For right-side seat backrest TED sensor circuits, check resistance at pins 4 and 5
For left-side seat cushion TED sensor circuits, check resistance at pins 7 and 8
For left-side seat backrest TED sensor circuits, check resistance at pins 9 and 10 Is the resistance between 0.9 and 1.1 kilo-ohms? (Note: these values are based on an ambient temperature
of 22°C/72°F) Yes
No circuit faults present. No further action
No
GO to B2. B2: CLIMATE SEATS ASSEMBLY - TED SENSOR CIRCUIT RESISTANCE CHECKS AT SEAT CLIMATE ASSEMBLY
CONNECTOR 1 Locate the appropriate seat backrest/seat cushion climate assembly connector 2 Disconnect connector 3 Check the integrity of connector terminals for bent terminals, backed-out or badly crimped wires. Rectify as required 4 Check the resistance of the climate seats TED sensor circuits at the climate assembly connector, pins 5 and 8 (Green and Green wires) Is the resistance between 0.9 and 1.1 kilo-ohms? (Note: these values are based on an ambient temperature
of 22°C/72°F) Yes
GO to B3. No
Replace the seat climate assembly B3: CLIMATE SEATS ASSEMBLY - TED SUPPLY CIRCUIT OPEN CIRCUIT CHECKS AT SEAT CLIMATE ASSEMBLY
CONNECTOR 1 Check the TED supply circuits at the climate assembly connector, pins 1 and 3 (Blue and Yellow wires) for open circuit faults Is an open-circuit fault present? Yes
Replace the seat climate assembly
No
No internal circuit faults present. Check for circuit faults in wiring harness between seat climate control
module and climate seat assembly and replace as required
PINPOINT TEST C : CLIMATE SEATS ASSEMBLY - BLOWER AND DUCTING DIAGNOSTICS TEST
CONDITIONS DETAILS/RESULTS/ACTIONS C1: CLIMATE SEATS ASSEMBLY - BLOWER SPEED CONTROL CIRCUIT RESISTANCE CHECKS AT SEAT TO VEHICLE
CONNECTOR 1 Uncouple connector C3HS03C from the seat climate control module 2 Check the resistance of the climate seats blower speed control circuits at connector C3HS03C For right-side seat cushion blower, check resistance at pins 3 and 7
For right-side seat backrest blower, check resistance at pins 4 and 7
For left-side seat cushion blower, check resistance at pins 11 and 15
For left-side seat backrest blower, check resistance at pins 12 and 15 Is the resistance between 290 and 420 kilo-ohms?
Yes
No circuit faults present. No further action
No
GO to C2. C2: CLIMATE SEATS ASSEMBLY - BLOWER CIRCUIT RESISTANCE CHECKS AT SEAT CLIMATE ASSEMBLY CONNECTOR Is the resistance between 290 and 420 kilo-ohms?
Yes
No internal circuit faults present. Check for circuit faults in wiring harness between seat climate control
module and climate seat assembly and replace as required
No
Replace the seat climate assembly