2010 JAGUAR XFR lock

Published: 17-Apr-2014
General Information - Diagnostic Trouble Code (DTC) Index DTC: Electric
Parking Brake (PBM)
Description and Operation

Electric Parking Brake (PBM)


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 the 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


Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer-approved diagnostic system)


When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places and with a
current 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


Inspect connectors for signs of water ingress, and pins for damage and/or corrosion


If diagnostic trouble codes 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


Where an 'on demand self-test' is referred to, this can be accessed via the 'diagnostic trouble code monitor' tab on the
manufacturers approved diagnostic system


Check DDW for open campaigns. Refer to the corresponding bulletins and SSM's which may be valid for the specific
customer complaint and carry out the recommendations as needed.

The table below lists all diagnostic trouble codes (DTCs) that could be logged in the electric parking brake module, for
additional diagnosis and testing information refer to the relevant diagnosis and testing section.
For additional information, refer to: Parking Brake (206-05 Parking Brake and Actuation, Diagnosis and Testing).

DTC Description Possible Causes Action P1536-62
Parking Brake Switch
Circuit - Signal compare
failure
Wiring harness fault
Switch internal fault
All signals from the switch are active at the same
time. Refer to the electrical circuit diagrams and
check all the switch apply, release and return
circuits for short circuit or open circuit. Repair
wiring harness as required
If no fault with wiring harness suspect switch has
an internal fault. Refer to the Warranty Policy and
Procedures manual if a module/component is
suspect P1536-66
Parking Brake Switch
Circuit - Signal has too
many transitions /
events
System abuse
Wiring harness fault
Switch internal fault
NOTE: The Electric Parking Brake system will be
locked out if the module receives more then 30
apply/release requests within 1 minute.

Cycle the ignition to clear the fault mode. Clear
the DTC and test the system
Refer to the electrical circuit diagrams and check
all the switch apply, release and return circuits for
intermittent short circuit or open circuit. Repair
wiring harness as required
If there are no wiring faults and the DTC resets

DTC Description Possible Causes Action system, complete a CAN network integrity test.
Refer to the electrical circuit diagrams and check
the CAN network U0103-00
Lost communication
With Gear Shift Module
A - No sub type
information
Gear shift control module /
system fault
Wiring harness fault
Check the Gear Shift Control Module for related
DTCs and refer to the relevant DTC index
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 U0104-00 Lost communication
Speed control module /
Check the Speed Control Module for related DTCs With Cruise Control Module A - No sub type system fault and refer to the relevant DTC index information Wiring harness fault 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 U0121-00
Lost communication
with Anti-Lock Braking
System (ABS) Control
Module - No sub type
information
Anti-Lock Braking System
control module / system
fault
Wiring harness fault
Check the Anti-Lock Braking System Control
Module for related DTCs and refer to the relevant
DTC index
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 U0155-00
Lost Communication
With Instrument Panel
Cluster (IPC) Control
Module - No sub type
information
Instrument Cluster /
system fault
Wiring harness fault
Check the Instrument Cluster for related DTCs
and refer to the relevant DTC index
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 U0300-00
Internal Control Module
Software
Incompatibility - No sub
type information
Car configuration file
stored in Park Brake
Module does not match the
master car configuration
file
Master car configuration
file not being transmitted
by master control module
Check all control modules for related DTCs and
refer to the relevant DTC index
Check the components installed on the vehicle
were installed by the factory or a dealer
Install the original components or a new one as
required U0401-00
Invalid Data Received
From ECM/PCM - No sub
type information
Invalid message from the
Engine Control Module
Check the Engine Control Module for related DTCs
and refer to the relevant DTC index U0404-00
Invalid Data Received
From Gear Shift Control
Module A - No sub type
information
Invalid message from the
gear shift control module
Check the Gear Shift Control Module for related
DTCs and refer to the relevant DTC index U0415-00
Invalid Data Received
From Anti-Lock Braking
System (ABS) Control
Module - No sub type
information
Invalid message from the
anti-lock Braking system
module
NOTE: This DTC may be stored even though no fault
condition is present and should be ignored unless the
customer has reported a electronic park brake concern.
Clear the DTC and retest. Verify the customer concern
prior to diagnosis

Check the Anti-Lock Braking System Control
Module for related DTCs and refer to the relevant
DTC index U0422-00
Invalid data received
from Central Junction
Box - No sub type
information
Invalid message from the
Central Junction Box
Check the Central Junction Box for related DTCs
and refer to the relevant DTC index

DTC Description Possible Causes Action U0423-00 Invalid Data Received
Invalid message from the
Check the Instrument Cluster for related DTCs From Instrument Panel Control Module - No sub instrument panel control and refer to the relevant DTC index type information module U0433-64
Invalid Data Received
From Cruise Control
Front Distance Range
Sensor - Signal
plausibility failure
Incorrect apply request
from the speed control
module when the
conditions were not correct
NOTE: The Park Brake Module has received a
request to apply the parkbrake from the Adaptive Speed
Control module but the conditions were not correct for
the apply to take place. E.g. the vehicle was moving. The
module will ignore the request but this DTC is logged for
safety reference

Check the Speed Control Module for related DTCs
and refer to the relevant DTC index U2001-68
Reduced System
Function - Event
information
Invalid or missing message
from Anti-Lock Braking
System with ignition OFF
and vehicle speed > 3Kph
NOTE: There has been invalid or missing data
detected from the Anti-Lock Brake System Control
Module. This DTC may be logged if the ignition is
switched off with the vehicle still moving. This DTC will
never be recorded as confirmed and is stored for
historical analysis only

Check the Speed Control Module for related DTCs
and refer to the relevant DTC index U2005-64
Vehicle Speed - Signal
implausibility failure
Implausible speed
message from the
Anti-Lock Braking System
control module
NOTE: Implausible speed is defined as passing
from high speed dynamic mode to static mode without
passing through low speed dynamic mode

Check the Anti-Lock Braking System Control
Module for related DTCs and refer to the relevant
DTC index U200D-4B
Control Module Output
Power A - Over
temperature
Actuator FET circuit over
current / over temperature
Refer to electrical wiring diagrams and check the
actuator circuit for low resistance. Repair circuit
faults or install a new actuator as required U2011-11
Motor - Circuit short to
ground
Electric park brake motor
output short to ground
Refer to electrical wiring diagrams and check the
actuator circuit for short to ground. Repair circuit
faults or install a new actuator as required U2011-12
Motor - Circuit short to
battery
Electric park brake motor
output short to power
Refer to electrical wiring diagrams and check the
actuator circuit for short to power. Repair circuit
faults or install a new actuator as required U2011-13 Motor - Circuit open
Electric park brake motor
output open circuit
Refer to electrical wiring diagrams and check the
actuator circuit for open circuit. Repair circuit
faults or install a new actuator as required U3000-47
Control Module -
Watchdog/safety micro
controller failure
Defective ECU
Lost communication with secondary micro
processor, check power and ground connections to
module. Clear DTC, perform battery reset and
retest system. If DTC reoccurs suspect the
Parking Brake control module
Refer to the Warranty Policy and Procedures
manual if a module/component is suspect U3002-81
Vehicle Identification
Number (VIN) - Invalid
serial number
The Park Brake Module has
previously been installed
to another vehicle
Check and install the original, or a new Park Brake
Module
Refer to the Warranty Policy and Procedures
manual if a module/component is suspect U3003-62
Battery Voltage - Signal
compare failure
Power distribution fault
Wiring harness fault
There is a difference of more than 2 volts
between the power supply to the parking brake
module and the battery voltage value broadcast
on CAN. Check other control modules for battery
voltage related DTCs. Refer to the electrical
circuit diagrams and check the power and ground

DTC Description Possible Causes Action B11DB-87
Battery Monitoring Module -
Missing message
NOTE: - Circuit BATTERY -

Battery signal line circuit fault
Refer to the electrical wiring
diagrams and check the battery
monitoring system module circuit for
open circuit, short circuit to ground,
short circuit to power
Refer to the electrical circuit
diagrams and check the LIN circuit
for short circuit to ground, short
circuit to power, open circuit B1206-68
Crash Occurred - Event
information
NOTE: - Circuit SRS_SIGNAL -

Engine control module has
detected the vehicle has crashed -
event information DTC only
Refer to the electrical circuit
diagrams and check the engine
control module to restraints control
module circuit for short circuit to
ground, short circuit to power, open
circuit. Repair circuit as required,
clear the DTC and retest C0031-00
Left Front Wheel Speed
Sensor - No sub type
information
Invalid data received from anti-lock
braking system module - left front
wheel speed signal fault
Check anti-lock braking system
module for related DTCs and refer to
relevant DTC index C0034-00
Right Front Wheel Speed
Sensor - No sub type
information
Invalid data received from anti-lock
braking system module - right front
wheel speed signal fault
Check anti-lock braking system
module for related DTCs and refer to
relevant DTC index C0037-00
Left Rear Wheel Speed
Sensor - No sub type
information
Invalid data received from anti-lock
braking system module - left rear
wheel speed signal fault
Check anti-lock braking system
module for related DTCs and refer to
relevant DTC index C003A-00
Right Rear Wheel Speed
Sensor - No sub type
information
Invalid data received from anti-lock
braking system module - right rear
wheel speed signal fault
Check anti-lock braking system
module for related DTCs and refer to
relevant DTC index P0010-13
Intake (A) Camshaft Position
Actuator (Bank 1) - Circuit
open
NOTE: - Circuit VFS_IN_A -

Intake (A) camshaft position
actuator (Bank 1) open circuit
Engine control module interface
harness open circuit
Refer to the electrical circuit
diagrams and check intake (A)
camshaft position actuator (Bank 1)
circuit for open circuit
Refer to the electrical circuit
diagrams and check engine control
module interface harness for open
circuit P0011-00
Intake (A) Camshaft Position
Timing - Over-Advanced
(Bank 1) - No sub type
information
NOTE: - Circuit VFS_IN_A -

Intake (A) camshaft position
actuator (Bank 1) open circuit
Engine control module interface
harness open circuit
Refer to the electrical circuit
diagrams and check intake (A)
camshaft position actuator (Bank 1)
circuit for open circuit
Refer to the electrical circuit
diagrams and check engine control
module interface harness for open
circuit P0013-13
Exhaust (B) Camshaft
Position Actuator (Bank 1) -
Circuit open
NOTE: - Circuit VFS_EX_A -

Exhaust (B) camshaft position
actuator (Bank 1) open circuit
Engine control module interface
harness open circuit
Refer to the electrical circuit
diagrams and check exhaust (B)
camshaft position actuator (Bank 1)
circuit for open circuit
Refer to the electrical circuit
diagrams and check engine control
module interface harness for open
circuit P0015-00
Exhaust (B) Camshaft
Position Timing -
Over-Retarded (Bank 1) - No
sub type information
NOTE: - Circuit VFS_EX_A -

Exhaust (B) camshaft position
actuator (Bank 1) open circuit,
short circuit to ground, short circuit
to power
Check for related DTC P0365-00.
Refer to the electrical circuit
diagrams and check exhaust (B)
camshaft position actuator (Bank 1)
for open circuit, short circuit to
ground, short circuit to power www.JagDocs.com

DTC Description Possible Causes Action tests associated with this DTC using the
manufacturer approved diagnostic system B120E-4B
Right Thermal Electric
Device Control - Over
temperature
Restriction in thermal
electric device air path
Seat backrest thermal
electric device right circuit
- Short circuit to ground
Seat cushion thermal
electric device right circuit
- Short circuit to ground
Front seat climate control
module failure
Check for blockage or restriction in thermal electric
device air path
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference RH_SEAT_BACK_TED+, Circuit reference
RH_SEAT_BACK_TED- - For short circuit to ground.
Repair circuit as required, clear DTC and retest
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference RH_CUSHION_TED+, Circuit reference
RH_CUSHION_TED- - For short circuit to ground.
Repair circuit as required, clear DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B120F-98
Left Seat Cushion -
Component or system
over temperature
Blocked or restricted
thermal electric device fan
exhaust vent
Restricted thermal electric
device fan movement
Check for blockage or restriction in thermal electric
device fan exhaust vent
Check for restricted thermal electric device fan
movement
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B1223-13
Right Seat Cushion Temperature Sensor -
Circuit open
Connectors disconnected or
connector pin damage
Seat cushion temperature
sensor right circuit - Open
circuit
Front seat climate control
module failure
Check for any disconnected connectors or damaged
connector pins
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference RH_CUSHION_SENSOR, Circuit reference
RH_CUSHION_SENSOR_RTN - For open circuit.
Repair circuit as required, clear DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B1224-13
Left Thermal Electric
Device Control - Circuit
open
Connectors disconnected or
connector pin damage
Seat backrest thermal
electric device left circuit -
Open circuit
Seat cushion thermal
electric device left circuit -
Open circuit
Front seat climate control
module failure
Check for any disconnected connectors or damaged
connector pins
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_SEAT_BACK_TED+, Circuit reference
LH_SEAT_BACK_TED- - For short circuit to ground.
Repair circuit as required, clear DTC and retest
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_CUSHION_TED+, Circuit reference
LH_CUSHION_TED- - For short circuit to ground.
Repair circuit as required, clear DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system

DTC Description Possible Causes Action B1224-19
Left Thermal Electric
Device Control - Circuit
current above threshold
Seat backrest thermal
electric device left circuit -
Short circuit to ground
Seat cushion thermal
electric device left circuit -
Short circuit to ground
Front seat climate control
module failure
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_SEAT_BACK_TED+, Circuit reference
LH_SEAT_BACK_TED- - For short circuit to ground.
Repair circuit as required, clear DTC and retest
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_CUSHION_TED+, Circuit reference
LH_CUSHION_TED- - For short circuit to ground.
Repair circuit as required, clear DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B1224-4B
Left Thermal Electric
Device Control - Over
temperature
Restriction in thermal
electric device air path
Seat backrest thermal
electric device left circuit -
Short circuit to ground
Seat cushion thermal
electric device left circuit -
Short circuit to ground
Front seat climate control
module failure
Check for blockage or restriction in thermal electric
device air path
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_SEAT_BACK_TED+, Circuit reference
LH_SEAT_BACK_TED- - For short circuit to ground.
Repair circuit as required, clear DTC and retest
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_CUSHION_TED+, Circuit reference
LH_CUSHION_TED- - For short circuit to ground.
Repair circuit as required, clear DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B1225-13
Right Seat Back Temperature Sensor -
Circuit open
Connectors disconnected or
connector pin damage
Seat backrest temperature
sensor right circuit - Open
circuit
Front seat climate control
module failure
Check for any disconnected connectors or damaged
connector pins
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference RH_SEAT_BACK_SENSOR, Circuit
reference RH_SEAT_BACK_SENSOR_RTN - For open
circuit. Repair circuit as required, clear DTC and
retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B1229-13
Left Seat Back Temperature Sensor -
Circuit open
Connectors disconnected or
connector pin damage
Seat backrest temperature
sensor left circuit - Open
circuit
Front seat climate control
module failure
Check for any disconnected connectors or damaged
connector pins
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_SEAT_BACK_SENSOR, Circuit
reference LH_SEAT_BACK_SENSOR_RTN - For open
circuit. Repair circuit as required, clear DTC and
retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system

DTC Description Possible Causes Action B122C-12
Left Seat Cushion
Blower Speed Sensor -
Circuit short to battery
Seat cushion blower speed
left circuit - Short circuit to
power
Blower motor assembly -
Short circuit to power
Front seat climate control
module failure
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_CUSHION_FAN_SPEED - For short
circuit to power. Repair circuit as required, clear
DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B122D-11
Left Seat Back Blower
Speed Sensor - Circuit
short to ground
Seat backrest blower speed
left circuit - Short circuit to
ground
Blower motor assembly -
Short circuit to ground
Front seat climate control
module failure
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_SEAT_BACK_FAN_SPEED - For short
circuit to ground. Repair circuit as required, clear
DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B122D-12
Left Seat Back Blower
Speed Sensor - Circuit
short to battery
Seat backrest blower speed
left circuit - Short circuit to
power
Blower motor assembly -
Short circuit to power
Front seat climate control
module failure
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_SEAT_BACK_FAN_SPEED - For short
circuit to power. Repair circuit as required, clear
DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B122E-98
Right Seat Cushion -
Component or system
over temperature
Blocked or restricted
thermal electric device fan
exhaust vent
Restricted thermal electric
device fan movement
Check for blockage or restriction in thermal electric
device fan exhaust vent
Check for restricted thermal electric device fan
movement
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B122F-98
Right Seat Back -
Component or system
over temperature
Blocked or restricted
thermal electric device fan
exhaust vent
Restricted thermal electric
device fan movement
Check for blockage or restriction in thermal electric
device fan exhaust vent
Check for restricted thermal electric device fan
movement
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B1230-98
Left Seat Back -
Component or system
over temperature
Blocked or restricted
thermal electric device fan
exhaust vent
Restricted thermal electric
device fan movement
Check for blockage or restriction in thermal electric
device fan exhaust vent
Check for restricted thermal electric device fan
movement
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system

DTC Description Possible Causes Action B1231-7A
Right Seat - Fluid leak
or seal failure
Seat backrest assembly -
Air path leaking
Seat cushion assembly -
Air path leaking
Seat assembly damaged
Check for blockage or restriction in seat
backrest/seat cushion thermal electric device fan
ducts
Check seat backrest/seat cushion thermal electric
device fan exhaust vent is clear
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B1232-7A
Left Seat - Fluid leak or
seal failure
Seat backrest assembly -
Air path leaking
Seat cushion assembly -
Air path leaking
Seat assembly damaged
Check for blockage or restriction in seat
backrest/seat cushion thermal electric device fan
ducts
Check seat backrest/seat cushion thermal electric
device fan exhaust vent is clear
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system B1235-13
Left Seat Cushion Temperature Sensor -
Circuit open
Connectors disconnected or
connector pin damage
Seat cushion temperature
sensor left circuit - Open
circuit
Front seat climate control
module failure
Check for any disconnected connectors or damaged
connector pins
Carry out on demand self test using manufacturer
approved diagnostic system to confirm the fault is
present
Refer to the electrical circuit diagrams and check
the front seat climate control module - Circuit
reference LH_CUSHION_SENSOR, Circuit reference
LH_CUSHION_SENSOR_RTN - For open circuit.
Repair circuit as required, clear DTC and retest
Carry out on demand self test using manufacturer
approved diagnostic system to confirm
rectification. Alternatively, carry out any pinpoint
tests associated with this DTC using the
manufacturer approved diagnostic system U0010-88
Medium Speed CAN
Communication Bus -
Bus off
Medium speed CAN
communication - Bus off
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
Carry out on demand self test using manufacturer
approved diagnostic system to confirm rectification U0140-00
Lost Communication
With Body Control
Module - No sub type
information
Lost communication with
central junction box
NOTE: This DTC may be stored even though no fault
condition is present and should be ignored unless the
customer has reported a climate seat concern. Clear the
DTC and retest. Verify the customer concern prior to
diagnosis

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 front seat climate
control module and central junction box
Carry out on demand self test using manufacturer
approved diagnostic system to confirm rectification U0142-00 Lost Communication
Lost communication with
Refer to the electrical circuit diagrams and check With Body Control Module "B" - No sub rear junction box the power and ground connections to the module type information 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 front seat climate control module and rear junction box Carry out on demand self test using manufacturer approved diagnostic system to confirm rectification www.JagDocs.com