abs module JAGUAR XFR 2010 1.G Manual Online
Page 1828 of 3039
STEERING 
COLUMN LOCKED Red warning triangle 
illuminated in LCD. Fault has occurred preventing the 
steering column lock from unlocking. This will also prevent the engine from 
starting. Press the stop/start button to return to 
accessory mode 4. If steering column  
is still locked, investigate cause of 
fault and interrogate the CJB (central junction box) for faults and diagnose 
using an approved Jaguar Diagnostic System. IGNITION ON 
Red warning triangle 
illuminated in LCD. Stop/start button has been pressed 
without the brake pedal depressed. Ignition is now in power mode 6. None ENGINE STOP 
BUTTON PRESSED Red warning triangle 
illuminated in LCD. Engine stop button has been pressed 
when the vehicle is moving. Engine will 
not be switched off until button is pressed quickly for a second time. Do not stop engine when vehicle is 
moving unless necessary. LIGHTS ON 
Amber warning triangle 
illuminated in LCD. Side lamps or headlamps are on and the 
driver's door has been opened. Switch off headlamps to avoid 
excessive drain on battery. AUTOLAMP 
DELAY OFF None 
Autolamp delay feature has been 
deactivated by moving light control 
switch from the auto position. None AUTOLAMP 
DELAY XX:XX None 
Lighting control switch has been moved 
to one of the 4 autolamp delay 
positions. Message displays delay timer period selected. None AUTOLAMP 
DELAY None 
Autolamp delay is selected on the light 
control switch and the driver has 
switched off ignition and opened driver's 
door initiating the autolamp delay. None. Message will extinguish once the 
selected delay timer has switched off 
the headlamps. TAIL LAMP 
FAILURE None The tail lamp LED (light emitting 
diode)'s are not functioning correctly. 
Location shown on vehicle image. Correct fault in rear lamp assembly, 
RJB (rear junction box) or wiring. BRAKE LAMP 
FAILURE None The brake lamp LED's are not functioning correctly. Location shown on displayed vehicle image. Correct fault in rear lamp assembly, 
RJB or wiring.   INDICATOR LAMP 
FAILURE None 
A turn signal indicator bulb  has failed. 
Location is shown on displayed vehicle image. Replace failed turn signal indicator 
bulb. E-DIFF NOT 
AVAILABLE Amber warning triangle 
illuminated in LCD accompanied with a single 
chime Differential temperature has reached the 
overheat threshold. System deactivated 
until temperature returns within limits. Allow differential to cool. E-DIFF FAULT 
Amber warning triangle 
illuminated in LCD accompanied with a single 
chime Fault has occurred with electronic 
differential. System deactivated until 
fault rectified. Investigate cause of fault and 
interrogate the system for faults and 
diagnose using an approved Jaguar Diagnostic System. ENGINE OIL LOW 
Amber warning triangle 
illuminated in LCD accompanied with a single 
chime The oil is at the minimum level for safe 
operation. Top-up with 1 liter (1.8 pints) of oil. ENGINE OIL 
HIGH Amber warning triangle 
illuminated in LCD accompanied with a single 
chime This warning is displayed when the 
engine is started, if the oil is above the 
maximum level for safe operation. Stop the vehicle as soon as safety 
permits and have the engine oil 
drained to correct level, before driving 
the vehicle. ENGINE OIL 
CRITICALLY LOW Red warning triangle 
illuminated LCD accompanied with a single 
chime The oil is below the minimum level for 
safe operation. Stop the vehicle as soon as safety 
permits and top-up with 1.5 liters (2.6 
pints) of oil. Wait for 10 minutes, 
re-check the oil level reading and top-up again if necessary. ENGINE OIL 
LEVEL MONITOR 
SYSTEM FAULT Amber warning triangle 
illuminated in LCD accompanied with a single 
chime A fault with the oil level monitoring 
system is indicated. Investigate cause of fault and 
interrogate the ECM for faults and diagnose using an approved Jaguar Diagnostic System. WATER IN FUEL 
Amber warning triangle 
illuminated in LCD accompanied with a single 
chime The water in fuel sensor in the fuel filter 
has detected water in the fuel system. Drain fuel filter to remove collected 
water. Odometer Display 
 
The odometer displays the total distance which the vehicle has traveled. This is calculated by the instrument cluster using 
wheel speed signals from the ABS module.  
The odometer can show 6 characters and distances up to 999,999 miles or kilometers. The total distance travelled is stored in a 
EEPROM (electrically erasable programmable read only memory) and the RAM (random access memory). This ensures that the 
total distance is not lost if the battery is disconnected. 
 
The odometer value is passed to other vehicle system modules on the medium speed and high speed CAN bus. This is used to record the total vehicle mileage for diagnostic purposes and when storing DTC (diagnostic trouble code)'s.  
Page 1839 of 3039
 
DTC Description Possible Causes Action    Refer to the electrical circuit diagrams and check the 
left side harness between the left side mirror and left 
hand module U023300 
Lost 
Communication 
With Side Obstacle 
Detection Control 
Module - Right  
CAN bus circuit fault 
Harness fault between 
right side mirror and right 
side module  
Refer to the electrical circuit diagrams and check the 
power and ground connections to the module. Using 
the manufacturer approved diagnostic system, 
complete a CAN network integrity test. Refer to the 
electrical circuit diagrams and check the CAN network 
between the left Blind Spot Monitoring System Module 
and the right Blind Spot Monitoring System Module 
Refer to the electrical circuit diagrams and check the 
right side harness between the right side mirror and 
right hand module U030000 
Internal Control 
Module Software 
Incompatibility  
RJB car configuration data 
is not compatible with the 
Blindspot Monitoring 
module Check RJB for related DTCs and refer to the relevant DTC 
Index. Clear DTCs and re-test. If DTC still logged, re-configure 
the RJB using the manufacturer approved diagnostic system. 
Clear DTCs and re-test. If DTC still logged, re-configure the 
Blindspot Monitoring module using the manufacturer approved 
diagnostic system. Clear DTC and re-test, if still logged 
suspect the Blindspot 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 U041568 
Invalid Data 
Received From 
Anti-Lock Brake 
System Control 
Module  
Event information Check ABS module for related DTCs and correct function, refer 
to the relevant DTC Index U042268 
Invalid Data 
Received From Body 
Control Module  
Event information Check CJB for related DTCs and correct function, refer to the 
relevant DTC Index U042368 
Invalid Data 
Received From 
Instrument Panel 
Control Module  
Event information Check instrument cluster for related DTCs and correct function, 
refer to the relevant DTC Index U210000 
Initial Configuration 
Not Complete  
No configuration has been 
previously set Check RJB for related DTCs and refer to the relevant DTC 
Index U210100 
Control Module 
Configuration 
Incompatible  
Data sent from RJB is 
invalid Check RJB for related DTCs and refer to the relevant DTC 
Index. Check/amend Car Configuration File using the 
manufacturer approved diagnostic system U300044 Control Module  
Data memory failure Cycle the ignition and check if the DTC is still logged. If DTC 
remains suspect the module, refer to the new 
module/component installation note at the top of the DTC 
Index U300047 Control Module  
Watchdog/safety Micro 
controller failure Cycle the ignition and check if the DTC is still logged. If DTC 
remains suspect the module, refer to the new 
module/component installation note at the top of the DTC 
Index U300049 Control Module  
Internal electronic failure Clear DTC, cycle ignition and retest. If fault persists, check 
and install a new Blindspot Monitoring module as required, 
refer to the new module/component installation note at the top of the DTC Index U300281 
Vehicle 
Identification 
Number  
Vehicle/component mis-
match. Corrupt VIN 
data being transmitted, 
suspect module previously 
installed to other vehicle Check RJB has not been previously installed to other vehicle. 
Install original/new module as required, refer to the new 
module/component installation note at the top of the DTC 
Index. Check RJB for DTCs and refer to the relevant DTC Index U300362 Battery Voltage  
Mis-match in battery 
voltage, of 2 volts or 
more, between Blindspot 
Monitoring module and RJB Carry out any pinpoint tests associated with this DTC using 
the manufacturer approved diagnostic system  
Page 1848 of 3039
information from other systems: 
 
ABS (anti-lock brake system) module - Road speed signal 
TCM (transmission control module) - Reverse gear engaged signal 
Trailer module - Trailer attached to vehicle 
 
The module also outputs messages on the medium speed CAN bus which are received by the integrated audio module. The integrated audio module processes these messages and converts them into Media Orientated System Transport (MOST) signals 
which are passed to the audio system power amplifier. These signals are then used by the power amplifier to emit the 
applicable warning tones from the front or rear audio speakers when an object is detected by the front or rear parking aid 
sensors. A warning tone can also be emitted to alert the driver to a fault in the parking aid system. 
 
The control module has a diagnostic connection via the medium speed CAN bus to enable faults to be retrieved using the 
Jaguar approved diagnostic equipment. Additionally an on-board diagnostic routine within the control module constantly 
monitors the system and alerts the driver to a system fault by emitting a 3 second continuous tone through the rear audio 
system speakers when the ignition is switched on. If front parking aid sensors are fitted, the control switch LED will also flash 
6 times. 
Parking Aid Sensors 
 
Four ultrasonic sensors are located in the front (if fitted) and rear bumpers. 
 
Each sensor has a three pin connector which mates with a bumper harness, which in turn is connected to the main body 
harness. Three pins provide for power supply, ground and signal lines to and from the parking aid module. 
 
The parking aid module controls the operation of each sensor using a digital output on the signal line. The module controls the 
sensor in one of two modes; combined transmitter and receiver mode or receiver mode only. 
Parking Aid Switch 
 
 
 
The parking aid switch is located in the instrument panel switch pack, above the touch screen. The switch is the LH switch with an integral LED.  
The switch is a non-latching push switch which allows the driver to select the parking aid system on or off. When pressed, the 
switch momentarily connects a ground to the parking aid module. 
The LED indicates when the parking aid system is active. The LED is controlled by the parking aid module.  
 
NOTE: The control switch allows the driver to activate/deactivate the parking aid system if operation is required or not 
required.  
Page 1856 of 3039
 
Parking Aid - Proximity Camera 
Diagnosis and Testing 
 
Principles of Operation Published: 30-Apr-2014 
 
For a detailed description of the rear view camera system, refer to the relevant Description and Operation section of the 
workshop manual. 
 
Inspection and Verification 
 
 
CAUTION: 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. 
NOTES: 
 
 
If a control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty 
Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new 
module/component. 
 
 
When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places, and with 
an up-to-date calibration certificate. When testing resistance always take the resistance of the digital multimeter leads into 
account. 
 
 
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests. 
1. Verify the customer concern 
 
2. Visually inspect for obvious signs of damage and system integrity 
 
Visual Inspection 
Mechanical Electrical  
Touch screen 
Rear view camera  
Fuses 
Wiring harnesses and connectors 
Touch screen 
Rear view camera  
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, verify the symptom and refer to the Symptom Chart, alternatively check for 
Diagnostic Trouble Codes (DTCs) and refer to the DTC Index 
 
5. Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific 
customer complaint and carry out the recommendations as required 
 
Symptom Chart 
 
Symptom Possible Cause Action Rear view camera 
image slow to react  
System operation within 
specification  
NOTE: After selecting reverse, it may take up to 20 seconds for the 
image to be displayed. 
No further action necessary Blank screen  
Rear view camera not 
functioning  
GO to Pinpoint Test A. Blue screen  
Video in signal absent  
GO to Pinpoint Test B. No tracking lines  
Missing/invalid reverse 
gear signal 
LIN fault  
Using the manufacturer approved diagnostic system, check the 
central junction box for related DTCs and refer to the relevant 
DTC index 
GO to Pinpoint Test C.  
Page 1866 of 3039
Published: 07-Aug-2014 
Battery and Charging System - General Information - Battery Care 
Requirements 
Description and Operation 
 1. INTRODUCTION 
 
This document defines the requirements for care and maintenance of batteries, and the standard of battery care at dealers and 
retailers for new vehicles. 
 
This applies to all types of 12 Volt Lead Acid Batteries used in Jaguar and Land Rover vehicles whether they are conventional 
flooded technology or Absorbed Glass Mat (AGM – also known as Valve Regulated Lead Acid (VRLA)) technology and also 
applies to both Primary, Secondary and Auxiliary Batteries. AGM batteries offer improved resistance to cycling as seen in stop 
start applications. 
 
In order to prevent damage to the battery and ensure a satisfactory service life, all processes detailed within this document 
must be rigorously adhered to. 
It is equally important therefore to note the following key points: 
 
All new vehicles leave the factory with either a transit relay installed and/or have a transit mode programmed into the 
vehicle control modules. The transit relay must be removed and  the transit mode disabled (where applicable) using an 
approved diagnostic system, NOT MORE THAN 72 HOURS before the customer takes delivery. 
The battery can be discharged by the following mechanisms: 
- Self Discharge: - A lead acid battery will very slowly discharge itself due to its own internal chemical processes 
whether it is connected to a vehicle or not. 
- Quiescent Discharge: - The vehicle electrical systems when connected to the battery will draw charge from the 
battery. 
 
12 Volt Lead Acid Batteries rely on internal chemical processes to create a voltage and deliver current. These processes and 
the internal chemical structure of the battery can be damaged if the battery is allowed to discharge over a number of weeks / 
months, or is left in a discharged state for a lengthy time period. 
 
On vehicles with conventional ignition keys, these must not be left in the ignition lock barrel when the transit relay 
has been removed, otherwise quiescent current will increase and the battery will discharge more rapidly. 
For keyless vehicles, the Smart Key must be stored at least 5m (16 ft) away from the vehicle when the vehicle is 
parked or stored. 
AGM Batteries are fully sealed and cannot have the electrolyte level topped up. 
 
 
NOTE: Dealers and retailers involved in the storage / handling of vehicles and replacement batteries have a responsibility 
to ensure that only a fully charged battery may be processed through the distribution selling chain. 
 2. GENERAL RULES FOR BATTERY CARE 
 2.1 Dealer Demonstration Vehicles 
 
Vehicles used as dealer demonstrator(s), in a showroom, must be connected to a JLR approved showroom conditioner capable 
of delivering 50 Amps. This will prevent the battery from being damaged. 
 2.2 Software Reflash, SDD work or Ignition On related workshop activities 
 
Due to the high electrical current demand and high depth of discharge that can occur during vehicle software re-flash activities, 
SDD work or ignition on (power mode 6) related work in the workshop, vehicles that are undergoing such activities MUST have a 
JLR approved power supply capable of delivering 50 Amps or more. 
 2.3 Extended Vehicle Rework 
 
For any extended vehicle rework that results in consuming vehicle power, either the battery should be disconnected or a JLR 
approved power supply connected. 
 2.4 Jump Starting New vehicles before they have been delivered to the customer 
 
It is the dealer / retailers responsibility to make sure the battery is not allowed to discharge by following the 
instructions and processes defined in this manual. 
However, if circumstances dictate that a new vehicle must be jump started due to a discharged battery whilst the 
vehicle is in the dealer / retailers care, the battery on this vehicle must be replaced with a new one prior to delivery 
to the customer at the dealer / retailers liability. 
The vehicle should also undergo investigation as to why the battery became discharged. 
Do not connect the jump starting cable to the negative (-) terminal of the battery. Always connect to the recommended 
earth point. As defined in the owners handbook or service documentation for that vehicle. 2.5 AGM Batteries 
 
AGM batteries must not be charged above 14.8 Volts. Doing so will damage them. 
AGM Batteries must be tested with a capable battery tester as detailed in the Equipment section (Section 5) of this  
Page 1878 of 3039
 
Battery, Mounting and Cables - Battery and Cables - Overview 
Description and Operation 
 
OVERVIEW 
 
Single Battery Vehicles Published: 18-Jun-2014 
 
Mounted on the battery negative terminal is a BMS (battery monitoring system) module. The BMS module is integral with the 
battery negative cable and is controlled by the ECM (engine control module). 
 
 
CAUTION: To avoid damaging the battery monitoring system module, always use a suitable body ground point rather than 
the battery negative terminal when connecting a slave power supply to the vehicle. 
 
If a new battery is fitted to the vehicle, the BMS module will require re-calibrating using the Jaguar approved diagnostic 
system. 
 
Fitted on the battery positive terminal is a transit relay. The transit relay must be removed from the vehicle during the 
Pre-Delivery Inspection (PDI). For additional information, refer to the PDI Manual. 
 
The vehicle battery provides power to the BJB (battery junction box). The BJB contains 3 megafuses, delivering power to the RJB (rear junction box), the CJB (central junction box) and the EJB (engine junction box). In addition to containing fuses and 
relays, the RJB and RJB contain software to control a number of vehicle systems. These functions are covered in the appropriate sections of this manual. 
Dual Battery System Vehicles - TD42.2L Engine Variants Only 
 
Two batteries are fitted to accommodate the dual battery system used for the Stop/Start system. 
 
A primary battery is located in the luggage compartment floor in a plastic molded tray and secured with a metal rod. The 
secondary battery is located in the DBJB (dual battery junction box). 
The primary battery is a 90Ahr, 850A CCA AGM Battery. 
The secondary battery is a 14Ahr, 200A CCA Absorbed Glass Mat (AGM) Battery. 
 
A BMS (battery monitoring system) control module is mounted on the primary battery negative terminal. The BMS control 
module is integral with the battery negative cable and is controlled by the GWM (gateway module). 
 
 
CAUTION: To avoid damaging the BMS control module, always use the ground (negative (-)) terminal stud point on the 
right side top mount. Never connect directly to the primary battery negative terminal when connecting a slave power supply to 
the vehicle, the BMS control module can be damaged. 
 
If a new primary battery is fitted to the vehicle, the BMS control module will require re-calibrating using a Jaguar approved 
diagnostic system. 
 
When the vehicle leaves the factory, a transit relay is fitted to the battery positive terminal. The transit relay is connected to 
the CJB which limits the electrical functions to essential items only, to reduce loads on the primary battery. The transit relay must be removed from the vehicle during the PDI (Pre-Delivery Inspection). For additional information, refer to the PDI. 
 
The primary battery provides power to the BJB. The BJB contains three megafuses, delivering power to the RJB, the EJB and the starter motor and generator. In addition to containing fuses and relays, the RJB and CJB contain software to control a number of vehicle systems. These functions are covered in the appropriate sections of this manual. 
 
A jump start terminal is located adjacent to the EJB. A cover protects the terminal when not in use. If jump starting is 
required, the cover must be removed and the positive (+) jump lead attached securely. The negative (-) jump lead is attached 
to a stud located on the right side top mount in the engine compartment. The cover must be fitted to the positive terminal 
when not in use. 
Dual Battery System 
 
The dual battery system is used on vehicles with the stop/start system. The dual battery system prevents the vehicle 
electrical systems being subjected to undesirably low voltages during repeated engine restarts. If the electrical systems are 
subject to low voltages the customer may notice degraded performance of components and systems and incorrect fault DTC 
(diagnostic trouble code)'s may be stored. 
 
The dual battery system isolates all electrical components and systems sensitive to low supply voltage from the primary 
battery while an engine start is in progress, and supplies them from the secondary battery. Without the dual battery system, 
the electrical power required by the TSS (Tandem Solenoid Starter) motor to crank the engine for each start would cause a 
voltage drop across the entire vehicle electrical network, and cause control modules to function incorrectly and in some cases 
reset and/or record DTC's. 
 
If the dual battery system is unable to prevent electrical supplies to the vehicle systems being subjected to low voltage levels 
during engine stop/start operations, due to the condition of the primary and/or secondary batteries or a system fault, the 
stop/start feature is disabled.  
Page 1879 of 3039
The dual battery system comprises the following components: 
Dual Battery Module (DBM). 
Dual Battery Junction Box (DBJB). 
Gateway Module (GWM). 
Primary battery. 
Secondary battery. 
 
The GWM hosts most of the software required to control the dual battery system and components. The GWM monitors the 
components and can store fault related DTC's. 
 
The GWM also controls the charging system software in conjunction with the ECM, RJB, CJB and ABS (anti-lock brake system) control module via the high speed and medium speed CAN (controller area network) bus. The GWM software will monitor the 
status of the stop/start system and determine when a stop/start event can occur. It can also intervene to maintain vehicle 
systems by keeping the engine running or initiating a restart due to, for example, climate control system requirements or 
request for restart from the ECM. A brake pressure signal is received from the ABS control module which will indicate to the 
GWM that an engine restart is required from driver operation of the foot brake. 
 
The GWM contains the intelligent power management system and the BMS software. Monitoring of the primary battery 
condition for stop/start is controlled by the GWM and the BMS control module.  
Page 1881 of 3039
6 Instrument Cluster 7 Rear Junction Box (RJB) CONTROL DIAGRAM - DUAL BATTERY SYSTEM VEHICLES 
 
 
 
Item Description 1 Battery Monitoring System (BMS) control module 2 Tandem Solenoid Starter (TSS) motor 3 Generator 4 Engine Junction Box (EJB) 5 Engine Control Module (ECM) 6 Anti-lock Brake System (ABS) control module 7 Transmission Control Module (TCM) 8 Central Junction Box (CJB) 9 Gateway Module (GWM) 10 Dual Battery Module (DBM)  
Page 1885 of 3039
is operated to crank the engine. The GWM is connected to the ABS (Anti-lock Brake System) control module via the high speed 
CAN bus. With the vehicle stationary and the engine off after an ECO engine stop, when the driver releases the brake pedal 
the ABS control module senses the reduction in brake pressure. This change of brake pressure state is sent as a high speed 
CAN message which is received by the GWM and the ECM. The GWM reacts within 105ms to instruct the DBM via the LIN bus  
to operate the two contactors in the DBJB to supply the sensitive loads from the secondary battery and supply the TSS motor 
direct from the primary battery. 
 
When the engine is running and the generator is supplying power to the vehicle systems, the GWM again instructs the DBM to 
operate the two contactors in the DBJB to supply all vehicle systems from the primary battery and the generator and to isolate 
the secondary battery. 
 
Secondary Battery Charging 
 
The DBM also controls the charging of the secondary battery. The GWM contains electrical load management software and 
monitors both batteries for their state of charge. The primary battery is monitored by the BMS control module which is 
connected to the DBM via the LIN bus. The DBM communicates the primary battery condition to the GWM via a LIN bus 
connection. The GWM sends a signal to the DBM via the LIN bus to instruct it to apply charging from the generator to the 
secondary battery when required. The contactor 2 is closed by the DBJB to complete the secondary battery circuit, and the 
generator output is applied to the secondary battery to charge it. 
 
The generator output is controlled by the GWM which monitors and controls the electrical load management system. The 
generator is connected to the GWM by a LIN bus allowing the GWM to control the output of the generator to maintain electrical 
system load requirements and battery charging. 
 
Electrical Load Management 
 
The electrical load management is controlled by the GWM and the BMS control module. 
 
The GWM will monitor the vehicle system power loads before and during an ECO engine stop. 
 
Before an ECO engine stop, the GWM will transmit a signal to system control modules on the CAN bus to request a power save 
on all electrical loads and set a minimum electrical value override. The GWM monitors the vehicle electrical loads and will 
inhibit a ECO engine stop until the load current is at a value low enough to be supported by the secondary battery. 
If the electrical loads cannot be reduced sufficiently, the GWM will inhibit the ECO engine stop. 
 
When the engine is stopped after an ECO engine stop, the GWM will continue to monitor the primary battery state of charge. 
If the primary or secondary battery voltage falls below 11.0V, a level which will result in degraded starting performance or 
possible primary battery damage, the GWM will initiate an engine start. 
System Inhibits 
 
The ECO stop/start system is inhibited if the dual battery system is not be capable of preventing electrical loads on the 
vehicle being subject to unacceptably low voltage levels during ECO stop/start operations due to a fault. 
 
ECO stop/start inhibit monitoring of the primary battery is performed by the BMS control module. If the primary battery voltage 
is too low to support an ECO stop/start, then the BMS control module will send a message to the GWM on the LIN bus to 
suspend ECO stop/start. 
 
The GWM monitors the secondary battery and the dual battery system components. Any fault found will cause the GWM to 
inhibit ECO stop/start and the GWM will record a DTC (diagnostic trouble code). 
 
Fault Diagnosis 
 
The GWM performs passive and active diagnostics on the dual battery system to determine the status of the system 
components. 
 
Passive diagnostics can detect faults in the DBJB and can check for stuck open or closed contactors and failure of DBM 
contactor command signals. 
 
Active diagnostics is a routine to test the capability of the contactors to respond to open or close command signals sent from 
the GWM to the DBM. This routine also checks the FET's (Field Effect Transistors) activate as required. (Refer to Dual Battery 
Junction Box below for description of FET operation) 
 
The GWM will also check the dual battery system components for faults in a controlled environment when the generator is 
providing a charging output. This will ensure that the detection of a fault will not result in sensitive electrical loads being 
subjected to low voltage which may occur during an ECO stop/start with a fault present. 
 
The GWM will illuminate the charge warning indicator in the instrument cluster if fault is detected in the dual battery system 
which will result in a degraded power supply. 
 
If a fault is detected the GWM transmits a CAN message to inhibit ECO stop/start operation. In some cases it will record a 
DTC, display a warning message in instrument cluster and also illuminate charge warning indicator. 
 
 
 
PRIMARY BATTERY - ALL VEHICLES Component Description 
 
The primary battery is located in a plastic tray under the luggage compartment floor in the right side of the luggage 
compartment, adjacent to the spare wheel. The battery is vented via a tube which is connected with a T piece to the vent from  
Page 1940 of 3039
 
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests. 
 
 
If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the 
cause. Always check for loose connections and corroded terminals. 
 
DTC Description Possible Cause Action B1A8911 
Satellite 
Antenna  
Satellite antenna circuit - 
short to ground Check satellite antenna connections. Refer to the electrical circuit 
diagrams and check satellite antenna circuit for short to ground B1A8913 
Satellite 
Antenna  
Satellite antenna circuit - 
open circuit Check satellite antenna connections. Refer to the electrical circuit 
diagrams and check satellite antenna circuit for open circuit B1A891B 
Satellite 
Antenna  
Satellite antenna - circuit 
resistance above 
threshold Suspect navigation module. Check and install a new navigation system 
module as required, refer to the new module/component installation 
note at the top of the DTC Index B1D5514 Antenna #2  
TMC/VICS FM antenna 
circuit - open circuit Check TMC/VICS FM antenna connections. Refer to the electrical circuit 
diagrams and check TMC/VICS FM antenna circuit for open circuit B1D5614 
Antenna #3 
Circuit  
VICS antenna circuit - 
open circuit Check VICS antenna connections. Refer to the electrical circuit 
diagrams and check VICS antenna circuit for open circuit U200531 
Vehicle 
Speed  
Missing vehicle speed 
message Check ABS module and Instrument Cluster for speed related DTCs and 
refer to relevant DTC Index U300049 
Control 
Module  
Internal electronic failure Suspect the navigation module. Check and install a new navigation 
system module as required, refer to the new module/component 
installation note at the top of the DTC Index U300055 
Control 
Module  
Incorrect car 
configuration data 
received Using the manufacturer approved diagnostic system check/amend the 
Car Configuration File parameter in block 2, byte 127 to match vehicle 
market/specification. If the DTC remains check navigation system 
module part number and ensure the correct component is installed to 
vehicle market/specification U300087 
Control 
Module  
Missing message Re-configure the RJB using the manufacturer approved diagnostic 
system. Check navigation module for DTCs and refer to the DTC Index. 
Check CAN network integrity using the manufacturer approved diagnostic system U300098 
Control 
Module  
Component or system 
over temperature Check for additional DTCs and refer to DTC Index. Clear DTC and 
re-test/monitor condition for re-occurrence U300317 
Battery 
Voltage  
Circuit voltage above 
threshold Carry out any pinpoint tests associated with this DTC using the 
manufacturer approved diagnostic system U300362 
Battery 
Voltage  
Mis-match in battery 
voltage, of 2 volts or 
more, between 
navigation module and 
RJB Carry out any pinpoint tests associated with this DTC using the 
manufacturer approved diagnostic system Touch Screen Display (TSD) 
 
 
CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part 
number 3548-1358-00 
NOTES: 
 
 
If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the 
Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to 
the installation of a new module/component. 
 
 
Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan 
tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give extra information read by 
the manufacturer-approved diagnostic system). 
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