2010 JAGUAR XFR front seat climate control module

supplies provide power for the movement motors in addition to the driver's seat switch pack. Power is only supplied to the
driver's seat module and the driver's seat switch pack when the ignition is on (power mode 6).

The driver's seat switch pack is connected to the driver's seat module by a LIN bus for the seat movement switches. Any selection for seat movement generates a message which is passed via the LIN to the driver's seat module. The seat module processes the request and operates the applicable seat function as required using the power supplies from the CJB.
Each seat motor contains a Hall position sensor. The sensor sends a feedback signal to the driver's seat module. The signal is
used for memory store and memory recall functions.

The lumbar adjustment switch on the driver's seat switch pack is wired direct to the lumbar pump and solenoids. The switch,
when moved to the inflate position for either the upper or lower inflatable cushion cell, provides a power supply to the lumbar
pump and simultaneously activates the applicable inflate solenoid valve. When the switch is released the pump stops and the
solenoid valve closes trapping the air in the inflatable cushion. When the switch is moved to the deflate position for either the
upper or lower inflatable cushion cell, power is supplied to the applicable deflate solenoid valve which opens to allow the air in
the cushion to escape. When the switch is released, the valve is closed and the remaining air in the cushion is retained.



FRONT SEATS - DESCRIPTION Component Description

The table below highlights the features available for each seating option.

Seat Type Non-Heated Heated Heated and Cooled Lumbar Support Memory 8-way Yes Optional No 2-way No 10-way Yes Optional Optional 2-way Optional (Driver's seat only) 12-way No No Yes 4-way No 16-way No No Yes 4-way Yes (Driver's seat only) Seat Heating

The 3-stage heated front seats feature 2 heater elements located in the seat cushion and a single heater element located in
the seat squab. Operation of the heated front seats is controlled by the ATC module via the TSD, information and entertainment control module and the CJB module on vehicles with heated seats. On vehicles with heated and cooled seats the operation is controlled by the TSD, information and entertainment control module and the front seat climate control
module.

The heated and cooled front seats each contain 2 climate modules; one in the cushion, one in the squab. The climate modules
contain 'Peltier' cells which are able to deliver heating and cooling based on a voltage provided by the front seat climate
control module. Each climate module also contains a fan, which blows air over the Peltier cells to distribute heated or cooled
air via liners in the seat cushion and squab. The fan is also controlled by the front seat climate control module. The TSD allows
the driver and passenger to select 3 ranges of heated or cooled ventilation; off, minimum and intermediate. Also, using the
selections on the TSD, the driver and passenger can select between full seat ventilation or squab backrest ventilation only.

Vehicles fitted with the 3-stage heated front seat option also feature a heated steering wheel.
Refer to: Steering Column Switches (211-05 Steering Column Switches, Description and Operation).
Electric Seat Adjustment

Lumbar Support

On 8, 10 and 12 way seats, a 2 way lumbar support is provided which allows the lumbar inflatable cushion to be inflated or
deflated as required. On 16 way seats, a 4 way lumbar support is fitted which comprises two separate cushion cells. The upper
and lower cells can be inflated or deflated individually allowing greater comfort adjustment for the driver and passenger.

The lumbar support comprises an inflatable cushion located in the seat squab, a pump and solenoids. The pump is activated
when the applicable seat switch is moved to the inflate position, inflating the cell(s) in the inflatable cushion. On 8 and 10
way seats, a single solenoid operated valve allows the inflatable cushion to be deflated. On 12 and 16 way seats, 4 solenoid
valves control the inflation and deflation of the upper and lower inflatable cushion cells, allowing each cell to be adjusted
individually.
Seat Motors

The head restraint motor is located in the upper section of each seat squab and is accessible by removal of the seat back. The
motor moves a cradle which is driven in a vertical motion by a rack and pinion arrangement. The cradle has the two head
restraint stems attached to it and therefore raises and lowers the head restraint as the motor moves the cradle. The motor
contains a Hall sensor which supplies positional information to the driver's seat module.

The seat slide motor is an integral component of the seat frame. The motor drives on a gear on a worm drive lead screw which
is integral with the floor rail. The lead screw has a stop at each end to limit the fore and aft seat movement.

When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal
places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM 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 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.

Climate Controlled Seat Module
DTC Description Possible Causes Action B10B9-13
Blower Control - Circuit
open
Connectors disconnected or
connector pin damage
Seat blower left circuit -
Open circuit
Blower motor assembly -
Short circuit to ground
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_FANS_RTN, Circuit reference
LH_FANS_PWR - 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 B10B9-4B
Blower Control - Over
temperature
Mechanical restriction in
blower motor assembly
Seat blower left circuit -
Short circuit to ground
Blower motor assembly -
Short circuit to ground
Front seat climate control
module failure
Check for mechanical restriction or debris in seat
blower
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_FANS_RTN, Circuit reference
LH_FANS_PWR - 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 B1157-13
Blower Control "B" -
Circuit open
Connectors disconnected or
connector pin damage
Seat blower right circuit -
Open circuit
Blower motor assembly -
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_FANS_RTN, Circuit reference
RH_FANS_PWR - 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 B1157-4B
Blower Control "B" -
Over temperature
Mechanical restriction in
blower motor assembly
Seat blower right circuit -
Short circuit to ground
Blower motor assembly -
Short circuit to ground
Front seat climate control
module failure
Check for mechanical restriction or debris in seat
blower
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_FANS_RTN, Circuit reference
RH_FANS_PWR - For short circuit to ground. Repair

DTC Description Possible Causes Action 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 B120E-13
Right Thermal Electric
Device Control - Circuit
open
Connectors disconnected or
connector pin damage
Seat backrest thermal
electric device right circuit
- Open circuit
Seat cushion thermal
electric device 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_TED+, Circuit reference
RH_SEAT_BACK_TED- - For open circuit. 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 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 B120E-19
Right Thermal Electric
Device Control - Circuit
current above threshold
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
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 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

DTC Description Possible Causes Action 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 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

DTC Description Possible Causes Action 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 B122A-11
Right Seat Cushion
Blower Speed Sensor -
Circuit short to ground
Seat cushion blower speed
right 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 RH_CUSHION_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 B122A-12
Right Seat Cushion
Blower Speed Sensor -
Circuit short to battery
Seat cushion blower speed
right 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 RH_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 B122B-11
Right Seat Back Blower
Speed Sensor - Circuit
short to ground
Seat backrest blower speed
right 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 RH_SEAT_BACK_FAN_SPEED - For short
circuit to ground. Repair circuit as required, clear www.JagDocs.com

DTC Description Possible Causes Action 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 B122B-12
Right Seat Back Blower
Speed Sensor - Circuit
short to battery
Seat backrest blower speed
right 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 RH_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 B122C-11
Left Seat Cushion
Blower Speed Sensor -
Circuit short to ground
Seat cushion 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_CUSHION_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 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

DTC Description Possible Causes Action 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 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

DTC Description Possible Causes Action 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 U0155-00
Lost Communication
With Instrument Panel
Cluster (IPC) Control
Module - No sub type
information
Lost communication with
instrument cluster
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 instrument cluster
Carry out on demand self test using manufacturer
approved diagnostic system to confirm rectification U0156-00 Lost Communication
Lost communication with
Refer to the electrical circuit diagrams and check With Information Center "A" - No sub rear seat entertainment the power and ground connections to the module type information control 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 rear seat entertainment control module Carry out on demand self test using manufacturer approved diagnostic system to confirm rectification U0300-00
Internal Control Module
Software
Incompatibility - No
sub type information
Software stored in front
seat climate control
module is not compatible
with master configuration
Check the front seat climate control module is
configured correctly
Reconfigure the front seat climate control module
using the manufacturer approved diagnostic
system. Clear the DTC and retest the system
Carry out on demand self test using manufacturer
approved diagnostic system to confirm rectification U0401-00
Invalid Data Received
From ECM/PCM - No
sub type information
The engine control module
has transmitted engine
speed quality factor CAN
signal at a specific value
for a greater than expected
time period
Check the engine control module for related DTCs
and refer to the relevant DTC index
On software levels previous to 8X23-14B663-AE
clear the DTC and take no further action if the
system is operating correctly