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. |
Note. Prior to carrying out any diagnosis, ensure the vehicle battery is in a good serviceable condition, refer to the battery care manual.
- Verify the customer concern.
- Visually inspect for obvious signs of damage and system integrity. VISUAL INSPECTION Mechanical Electrical Security, condition and correct installation of seat components and fixings Fuses Harnesses for damage/corrosion Electrical connectors Damaged/corroded pins
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, verify the concern and refer to the Symptom Chart, alternatively, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.
- 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.
SYMPTOM CHART
| Symptom | Possible Cause | Action |
|---|---|---|
| No seat movement from switch pack (including no memory recall) | Seat module has gone into sleep mode Seat switch pack LIN, power or ground circuit - open circuit Seat switch pack LIN circuit - short to power, ground | Set ignition ON. Re-check seat function from switch pack. Check for DTC B1A9887 and refer to DTC Index. Check for DTC B1A9888 and refer to DTC Index |
| No seat movement or lumbar movement from switch pack (including no memory recall) | NOTE: Seat module does not control the seat lumbar function Seat switch pack power or ground supply circuits - open circuit | Refer to the electrical circuit diagrams and check seat switch pack power and ground supply circuits for open circuit |
| Seat movement and lumbar movement from switch pack is ok, however, no recall from memory switch pack | Seat switch pack to memory switch pack circuits - short, open circuit | NOTE: Memory switch pack is separate switch hardwired to seat adjust switch Refer to the electrical circuit diagrams and check seat switch pack to memory switch pack circuits for short, open circuit |
| Seat movement and memory recall works correctly however seat lumbar is not working correctly | NOTE: Seat module does not control the seat lumbar function Seat movement switch to lumbar circuits - short, open circuit | Refer to the electrical circuit diagrams and check seat movement switch to lumbar circuits for short, open circuit |
| Seat movement from switch pack occurs in delayed inch mode (seat axis moves short distance when switch pressed for longer than 2 seconds and then stops). This behaviour could occur on any seat axis (slide, height, squab, tilt, headrest or cushion) when requested | Motor Hall sensor on affected axis is not connected or not receiving expected signals | Check for DTCs, B1B8731, B1B9131, B1B8931, B1B9331, B106331, B106431. If present then check Hall sensor feedback circuits between seat motor and seat module and also check Hall sensor ground circuits for affected axis. These DTCs are only logged if the axis is attempted to be moved in both directions. When hall sensor connection issue fixed press switch on affected axis for longer than 2 seconds. By keeping the switch pressed the axis movement should now operate for the duration of switch-press. Re-calibrate affected seat |
| Seat movement from switch pack occurs in inch mode. When seat axis movement is requested from the seat switch pack the requested seat axis moves a short distance then stops (does not include lumbar). This behaviour will occur on ALL seat axis (slide, height, squab, tilt headrest and cushion) when requested. MS CAN communication not possible | MS CAN fault | Carry out CAN network integrity test using manufacturer approved diagnostic system |
| Seat movement from switch pack occurs in inch mode. When seat axis movement is requested from the seat switch pack the requested seat axis moves a short distance then stops (does not include lumbar). This behaviour will occur on ALL seat axis (slide, height, squab, tilt headrest and cushion) when requested. MS CAN communication not possible | Seat module is disconnected from the CAN Bus | Check for Instrument Cluster DTC U020800 'Lost Communication With Seat Module'. If this DTC is present, refer to the electrical circuit diagrams and check seat module power and ground supplies for short, open circuit. Carry out CAN network integrity tests using the manufacturer approved diagnostic system |
| Seat movement from switch pack occurs in inch mode. When seat axis movement is requested from the seat switch pack the requested seat axis moves a short distance then stops (does not include lumbar). This behaviour will occur on ALL seat axis (slide, height, squab, tilt headrest and cushion) when requested. MS CAN communication not possible | Instrument cluster is disconnected from the CAN Bus | Check for seat module DTC U015500 'Lost Communication With Instrument Cluster'. If this DTC is present, refer to the electrical circuit diagrams and check instrument cluster power and ground supplies for short, open circuit. Carry out CAN network integrity tests using the manufacturer approved diagnostic system |
| Seat movement from switch pack occurs in inch mode. When seat axis movement is requested from the seat switch pack the requested seat axis moves a short distance then stops (does not include lumbar). This behaviour will occur on ALL seat axis (slide, height, squab, tilt headrest and cushion) when requested. MS CAN communication not possible | Driver Door Module is disconnected from the CAN Bus | Check for seat module DTC U019900 'Lost Communication With Driver Door Module'. If this DTC is present, refer to the electrical circuit diagrams and check driver door module power and ground supplies for short, open circuit. Carry out CAN network integrity tests using the manufacturer approved diagnostic system |
| Seat movement from switch pack occurs in inch mode. When seat axis movement is requested from the seat switch pack the requested seat axis moves a short distance then stops (does not include lumbar). This behaviour will occur on ALL seat axis (slide, height, squab, tilt headrest and cushion) when requested. MS CAN communication not possible | Rear Junction Box (RJB) is disconnected from the CAN Bus | Check for seat module DTC U014200 'Lost Communication With RJB'. If this DTC is present, refer to the electrical circuit diagrams and check RJB power and ground supplies for short, open circuit. Carry out CAN network integrity tests using the manufacturer approved diagnostic system |
| Seat movement from switch pack occurs in inch mode. When seat axis movement is requested from the seat switch pack the requested seat axis moves a short distance then stops (does not include lumbar). This behaviour will occur on ALL seat axis (slide, height, squab, tilt headrest and cushion) when requested. MS CAN communication not possible | Central Junction Box (CJB) is disconnected from the CAN Bus | Refer to the electrical circuit diagrams and check CJB power and ground supplies for short, open circuit. Carry out CAN network integrity tests using the manufacturer approved diagnostic system |
| NOTE: Electric passenger seat can always be activated - there is no passenger seat module installed to this vehicle Seat module does not go to sleep. Seat movement is always active from driver seat switch pack | Seat module is in manufacturing mode | NOTE: A new module is NOT required to be installed, only the module replacement routine needs to be performed. This will set the PID required to disable manufacturing mode Seat module needs to be configured for customer mode. Check for DTC U1A4C68 'Build/End of Line mode Active'. If this DTC is present then configure for customer mode by running 'New Seat Module Replacement' application for the affected seat using the manufacturer approved diagnostic system |
| Front seat fore/aft movement not functioning | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test A . |
| Front seat excessive fore/aft free play | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test B . |
| Front seat fore/aft movement noisy | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test C . |
| Front seat height, tilt and/or seat extension motor movement not functioning | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test D . |
| Front seat height, tilt and/or extension movement noisy | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test E . |
| Heating And Cooling - Inoperative | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test F . |
| Heating And Cooling - Noisy Operation | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test G . |
| Heating And Cooling - Poor Heat Or Cool Efficiency | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test H . |
| Heating And Cooling - Heat Or Cool Operation Slow | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test I . |
| Heating And Cooling - Intermittent Operation | Carry out the pinpoint test associated to this Symptom | Refer to Pinpoint Test J . |
| NOTE |
|---|
| Seat module does not control the seat lumbar function |
| NOTE |
|---|
| Memory switch pack is separate switch hardwired to seat adjust switch |
| NOTE |
|---|
| Seat module does not control the seat lumbar function |
| NOTE |
|---|
| Electric passenger seat can always be activated - there is no passenger seat module installed to this vehicle |
| NOTE |
|---|
| A new module is NOT required to be installed, only the module replacement routine needs to be performed. This will set the PID required to disable manufacturing mode |
DTC INDEX
| CAUTION | When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00. |
Note. 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 program is in operation, prior to the installation of a new module/component.
Note. 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 additional information read by the manufacturer approved diagnostic system).
Note. 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.
Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
Note. Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
Note. 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 |
|---|---|---|---|
| B105F11 | Seat Cushion Extension Motor Output | Driver seat cushion extension motor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat cushion extension motor circuit for short to ground |
| B105F15 | Seat Cushion Extension Motor Output | Driver seat cushion extension motor circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat cushion extension motor circuit for short to power, open circuit |
| B106011 | Seat Headrest Motor Output | Driver seat headrest motor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat headrest motor circuit for short to ground |
| B106015 | Seat Headrest Motor Output | Driver seat headrest motor circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat headrest motor circuit for short to power, open circuit |
| B106331 | Seat Cushion Extension Motor Speed/Position Sensor | Driver seat cushion extension motor speed/position sensor circuit - short to ground, power, open circuit Sensor failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat cushion extension motor speed/position sensor circuit for short to ground, power, open circuit. Check and install a new sensor as required |
| B106431 | Seat Headrest Motor Speed/Position Sensor | Driver seat headrest motor speed/position sensor circuit - short to ground, power, open circuit Sensor failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat headrest motor speed/position sensor circuit for short to ground, power, open circuit. Check and install a new sensor as required |
| B106524 | Cushion extend switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and cushion extend circuit for short to ground |
| B106624 | Cushion retract switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and cushion retract circuit for short to ground |
| B106D24 | Headrest up switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and headrest up circuit for short to ground |
| B106E24 | Headrest down switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and headrest down circuit for short to ground |
| B1A9883 | LIN Bus Circuit #1 | Value of signal protection calculation incorrect | Check LIN network for interference/EMC related issues |
| B1A9886 | LIN Bus Circuit #1 | LIN bus Header error | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Check LIN network for interference/EMC related issues |
| B1A9887 | LIN Bus Circuit #1 | Slave node communication missing. LIN bus circuit - short to ground, power, open circuit (ECU Types 7 & 8) | Refer to electrical circuit diagrams and test LIN Bus between seat switch pack and control module for short to ground, power, open circuit, check power and ground supplies to switch pack |
| B1A9888 | LIN Bus Circuit #1 | Bus off | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams and test LIN Bus between seat switch pack and control module for short to ground or power |
| B1B8611 | Seat Height Motor Relay | Driver seat parallel height motor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat parallel height motor circuit for short to ground |
| B1B8615 | Seat Height Motor Relay | Driver seat parallel height motor circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat parallel height motor circuit for short to power, open circuit |
| B1B8731 | Seat Height Motor Speed/Position Sensor | Driver seat parallel height motor speed/position sensor circuit - short to ground, power, open circuit Sensor failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat parallel height motor speed/position sensor circuit for short to ground, power, open circuit. Check and install a new sensor as required |
| B1B8811 | Seat Slide Motor Relay | Driver seat slide motor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat slide motor circuit for short to ground |
| B1B8815 | Seat Slide Motor Relay | Driver seat slide motor circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat slide motor circuit for short to power, open circuit |
| B1B8931 | Seat Slide Motor Speed/Position Sensor | Driver seat slide motor speed/position sensor circuit - short to ground, power, open circuit Sensor failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat slide motor speed/position sensor circuit for short to ground, power, open circuit. Check and install a new sensor as required |
| B1B9011 | Seat Tilt Motor Relay | Driver seat tilt motor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat tilt motor circuit for short to ground |
| B1B9015 | Seat Tilt Motor Relay | Driver seat tilt motor circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat tilt motor circuit for short to power, open circuit |
| B1B9131 | Seat Tilt Motor Speed/Position Sensor | Driver seat tilt motor speed/position sensor circuit - short to ground, power, open circuit Sensor failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat tilt motor speed/position sensor circuit for short to ground, power, open circuit. Check and install a new sensor as required |
| B1B9211 | Seat Recline Motor Relay | Driver seat recline motor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat recline motor circuit for short to ground |
| B1B9215 | Seat Recline Motor Relay | Driver seat recline motor circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat recline motor circuit for short to power, open circuit |
| B1B9331 | Seat Recline Motor Speed/Position Sensor | Driver seat recline motor speed/position sensor circuit - short to ground, power, open circuit Sensor failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check driver seat recline motor speed/position sensor circuit for short to ground, power, open circuit. Check and install a new sensor as required |
| B1B9424 | Seat Height Up Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and seat height up circuit for short to ground |
| B1B9524 | Seat Height Down Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and seat height down circuit for short to ground |
| B1B9624 | Seat Slide Forward Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and seat slide forward circuit for short to ground |
| B1B9724 | Seat Slide Backward Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and seat slide backward circuit for short to ground |
| B1B9824 | Seat Tilt Up Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and seat tilt up circuit for short to ground |
| B1B9924 | Seat Tilt Down Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and seat tilt down circuit for short to ground |
| B1C0024 | Seat Recline Up Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and seat recline up circuit for short to ground |
| B1C0124 | Seat Recline Down Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit and check seat recline down circuit for short to ground |
| B1C0224 | Memory Store Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit |
| B1C0324 | Memory #1 Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit |
| B1C0424 | Memory #2 Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit |
| B1C0524 | Memory #3 Switch | Signal stuck high | Check for a stuck switch. Refer to the electrical circuit diagrams and check driver seat switch pack to seat module LIN circuit for short, open circuit |
| U001088 | Medium speed Can communication Bus | Bus off | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network to climate controlled seat module for short, open circuit |
| U014000 | Lost communication with CJB | Lost communication with CJB | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Check CJB for related DTCs and refer to the relevant DTC Index |
| U014200 | Lost communication with RJB | Lost communication with RJB | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Check RJB for related DTCs and refer to the relevant DTC Index |
| U015500 | Lost communications with instrument cluster | Lost communications with instrument cluster | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network to climate controlled seat module and instrument cluster for short, open circuit |
| U019900 | Lost communication with Driver Door Module (DDM) | Lost communication with DDM | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| U030000 | Internal control module software incompatibility | Invalid configuration message is received | Re-configure the RJB using the manufacturer approved diagnostic system. Clear the DTC and retest. If the DTC is still logged suspect the DSM/PSM, refer to the new module installation note at the top of the DTC Index |
| U1A1449 | CAN Initialization failure | Internal electronic failure | Install a new DSM, refer to the new module installation note at the top of the DTC Index |
| U1A4C68 | Build/end of line mode active | Manufacturing mode has not been removed | Place DSM in to customer mode using manufacturer approved diagnostic system |
| U300049 | Control module | Internal electronic failure | Install a new DSM, refer to the new module installation note at the top of the DTC Index |
| U300055 | Stored vehicle configuration data does not match | Incorrect car configuration data received | Re-configure the RJB using the manufacturer approved diagnostic system. Clear DTC and re-test. If the DTC remains suspect the DSM, refer to the new module installation note at the top of the DTC Index |
| U300087 | Control Module | Missing message | Re-configure the RJB using the manufacturer approved diagnostic system. Check DSM for DTCs and refer to the DTC Index. Check CAN network integrity using the manufacturer approved diagnostic system |
| U300146 | Control module improper shutdown | Calibration/parameter memory failure | Check for DTCs that could indicate power failure to the module and refer to the DTC Index |
| U300281 | Vehicle Identification Number (VIN) | Vehicle/component mis-match. Corrupt VIN data being transmitted, module previously installed to other vehicle | Install original module, check for DTCs and refer to relevant DTC Index |
| U300316 | Battery Voltage | Circuit voltage below threshold | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| U300317 | Battery Voltage | Circuit voltage above threshold | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
DRIVER SEAT MODULE
| CAUTION | When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00. |
Note. 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 program is in operation, prior to the installation of a new module/component.
Note. 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 additional information read by the manufacturer approved diagnostic system).
Note. 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.
Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
Note. Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
Note. 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 |
|---|---|---|---|
| B10B913 | Blower Control | Left blower control circuit - open circuit Left blower motor - open circuit Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left blower control circuit for open circuit. Check and install new left blower motor, climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B10B94B | Blower Control | Mechanical restriction within the left blower motor housing Left blower control circuit - short to ground Left blower motor - short to ground Climate controlled seat module failure | Check for mechanical restriction within the left blower motor housing. Refer to the electrical circuit diagrams and check left blower control circuit for short to ground. Check and install new left blower motor, climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B115713 | Blower Control "B" | Right blower control circuit - open circuit Right blower motor - open circuit Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right blower control circuit for open circuit. Check and install new right blower motor, climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B11574B | Blower Control "B" | Mechanical restriction within the right blower motor housing Right blower control circuit - short to ground Right blower motor - short to ground Climate controlled seat module failure | Check for mechanical restriction within the right blower motor housing. Refer to the electrical circuit diagrams and check right blower control circuit for short to ground. Check and install new right blower motor, climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B120E13 | Right Thermal Electric Device Control | Right seatback/cushion thermal electric device control circuits - open circuit Thermal electric device failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seatback/cushion thermal electric device control circuits for open circuit. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B120E19 | Right Thermal Electric Device Control | Right seatback/cushion thermal electric device control circuits - short to ground Thermal electric device failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seatback/cushion thermal electric device control circuits for short to ground. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B120E4B | Right Thermal Electric Device Control | Right seatback/cushion thermal electric device control circuits - short to ground Blocked thermal electric device duct (restriction in airflow) Thermal electric device failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Check for restriction in thermal electric device duct. Refer to the electrical circuit diagrams and check right seatback/cushion thermal electric device control circuits for short to ground. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122413 | Left Thermal Electric Device Control | Left seatback/cushion thermal electric device control circuits - open circuit Thermal electric device failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seatback/cushion thermal electric device control circuits for open circuit. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122419 | Left Thermal Electric Device Control | Left seatback/cushion thermal electric device control circuits - short to ground Thermal electric device failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seatback/cushion thermal electric device control circuits for short to ground. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B12244B | Left Thermal Electric Device Control | Left seatback/cushion thermal electric device control circuits - short to ground Blocked thermal electric device duct (restriction in airflow) Thermal electric device failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Check for restriction in thermal electric device duct. Refer to the electrical circuit diagrams and check left seatback/cushion thermal electric device control circuits for short to ground. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122A11 | Right Seat Cushion Blower Speed Sensor | Right seat cushion blower speed sensor circuit - short to ground Internal motor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check right seat cushion blower speed sensor circuit for short to ground. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122A12 | Right Seat Cushion Blower Speed Sensor | Right seat cushion blower speed sensor circuit - short to power Internal motor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check right seat cushion blower speed sensor circuit for short to power. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122B11 | Right Seat Back Blower Speed Sensor | Right seatback blower speed sensor circuit - short to ground Internal motor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check right seatback blower speed sensor circuit for short to ground. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122B12 | Right Seat Back Blower Speed Sensor | Right seatback blower speed sensor circuit - short to power Internal motor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check right seatback blower speed sensor circuit for short to power. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122C11 | Left Seat Cushion Blower Speed Sensor | Left seat cushion blower speed sensor circuit - short to ground Internal motor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check left seat cushion blower speed sensor circuit for short to ground. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122C12 | Left Seat Cushion Blower Speed Sensor | Left seat cushion blower speed sensor circuit - short to power Internal motor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check left seat cushion blower speed sensor circuit for short to power. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122D11 | Left Seat Back Blower Speed Sensor | Left seatback blower speed sensor circuit - short to ground Internal motor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check left seatback blower speed sensor circuit for short to ground. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122D12 | Left Seat Back Blower Speed Sensor | Left seatback blower speed sensor circuit - short to power Internal motor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check left seatback blower speed sensor circuit for short to power. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122E13 | Right Seat Cushion | Right seat cushion temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check right seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122E98 | Right Seat Cushion | Blockage in the right seat cushion thermal electric device fan exhaust vent Right seat cushion thermal electric device fan movement restricted | Check/remove any blockage/restriction from the right seat cushion thermal electric device fan exhaust vent |
| B122F13 | Right Seat Back | Right seatback temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seatback temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122F98 | Right Seat Back | Blockage in the right seatback thermal electric device fan exhaust vent Right seatback thermal electric device fan movement restricted | Check/remove any blockage/restriction from the right seatback thermal electric device fan exhaust vent |
| B120F13 | Left Seat Cushion | Left seat cushion temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure | Refer to the electrical circuit diagrams and check left seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B120F98 | Left Seat Cushion | Blockage in the left seat cushion thermal electric device fan exhaust vent Left seat cushion thermal electric device fan movement restricted | Check/remove any blockage/restriction from the left seat cushion thermal electric device fan exhaust vent |
| B123013 | Left Seat Back | Left seatback temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seatback temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B123098 | Left Seat Back | Blockage in the left seatback thermal electric device fan exhaust vent Left seatback thermal electric device fan movement restricted | Check/remove any blockage/restriction from the left seatback thermal electric device fan exhaust vent |
| B12317A | Right Seat | Temperature difference between seatback and cushion | Check/remove any blockage/restriction from the right seatback and cushion thermal electric device fan exhaust vent |
| B12327A | Left Seat | Temperature difference between seatback and cushion | Check/remove any blockage/restriction from the left seatback and cushion thermal electric device fan exhaust vent |
| B122313 | Right Seat Cushion Temperature Sensor | Right seat cushion temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122513 | Right Seat Back Temperature Sensor | Right seatback temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seatback temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B122913 | Left Seat Back Temperature Sensor | Left seatback temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seatback temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| B123513 | Left Seat Cushion Temperature Sensor | Left seat cushion temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index |
| U000188 | High Speed CAN Communication Bus | Bus off | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network to climate controlled seat module for short, open circuit |
| U001088 | Medium speed Can communication Bus | Bus off | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network to climate controlled seat module for short, open circuit |
| U014000 | Lost communication with CJB | Lost communication with CJB | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| U014200 | Lost communication with RJB | Lost communication with RJB | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| U015500 | Lost communications with instrument cluster | Lost communications with instrument cluster | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network to climate controlled seat module and instrument cluster for short, open circuit |
| U015600 | Lost Communication With Information Centre "A" | Lost communications with information and entertainment control module | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| U030000 | Internal control module software incompatibility | Invalid configuration message is received | Re-configure the climate controlled seat module and the RJB using the manufacturer approved diagnostic system. Clear the DTC and retest. If the DTC is still logged suspect the climate controlled seat module, refer to the new module installation note at the top of the DTC Index |
| U040100 | Invalid Data Received From ECM/PCM | Poor engine speed quality factor | Check ECM for speed 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 |
| U210100 | Control Module Configuration Incompatible | Calibration incomplete/corrupt | Re-configure the climate controlled seat module using the manufacturer approved diagnostic system |
| U300004 | Control Module | Internal electronic failure | Check and install a new climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index |
| U300362 | Battery Voltage | Mis-match in battery voltage, of 2 volts or more, between climate controlled seat module and RJB | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
CLIMATE CONTROLLED SEAT MODULE
Pinpoint Test A: Front seat fore/aft movement not functioning
Pinpoint Test A
- WARNING: Before work is carried out, make the air bag supplemental restraint system safe. For additional information, refer to Standard Workshop Practices section of workshop manual.
- Set ignition status to ' ON'.
- From the switch pack, operate the front seat forward-rearward seat motor switch and listen for evidence of the motor operating.
- Check front seat drive bar for correct installation and condition
- WARNING: When carrying out the following steps, stand clear of all moving parts and ensure link harness is routed accordingly.
- Set ignition status to 'OFF'.
- Disconnect front seat forward-rearward seat motor connector.
- NOTE: It may be that the seat has been driven to the limit of travel along the relevant axis, and when the link harness is connected, the seat will remain in the same position. If this is the case, a jolt may be felt from the motor. To confirm the motor operation, swap the link harness to alternate motor pin connections and the seat should travel in the opposite direction.
- Using a locally made fused link harness and power supply, connect power and ground to forward-rearward seat motor.
- Battery positive terminal Battery negative terminal forward-rearward seat motor pin 1 forward-rearward seat motor pin 2
Pinpoint Test B: Front seat excessive forward-rearward free play
Pinpoint Test B
- WARNING: Before work is carried out, make the air bag supplemental restraint system safe. For additional information, refer to Standard Workshop Practices section of workshop manual.
- Check all accessible front seat frame fixings are installed and to the correct torque.
- Compare the front seat forward-rearward free play against a similar seat.
- Remove front seat and/or any seat covers/trim to allow access to check remaining front seat frame fixings are all installed and to the correct torque.
Pinpoint Test C: Front seat forward-rearward movement noisy
Pinpoint Test C
- WARNING: Before work is carried out, make the air bag supplemental restraint system safe. For additional information, refer to Standard Workshop Practices section of workshop manual.
- Compare the front seat forward-rearward movement noise to other front seat.
- Compare the front seat forward-rearward movement noise to front seat in other vehicle.
- Check for debris obstructing seat movement.
- Loosen front seat frame fixings.
- Set ignition status to 'ON'.
- Using the front seat switch pack drive the front seat fully forward then fully rearward.
- Tighten front seat frame fixings to the correct torque.
- Re-check for noisy seat movement.
- Check front seat drive bar for correct installation and condition.
Pinpoint Test D: Front seat height, tilt and/or seat extension motor movement not functioning
Pinpoint Test D
- WARNING: Before work is carried out, make the air bag supplemental restraint system safe. For additional information, refer to Standard Workshop Practices section of workshop manual.
- WARNING: When carrying out the following steps, stand clear of all moving parts and ensure link harness is routed accordingly.
- Set ignition status to ' OFF'.
- Disconnect front seat height, tilt or extension motor connector.
- NOTE: It may be that the seat has been driven to the limit of travel along the relevant axis, and when the link harness is connected, the seat will remain in the same position. If this is the case, a jolt may be felt from the motor. To confirm the motor operation, swap the link harness to alternate motor pin connections and the seat should travel in the opposite direction.
- Using a locally made fused link harness and power supply, connect power and ground to relevant motor.
- Battery positive terminal Battery negative terminal motor pin 1 motor pin 2
Pinpoint Test E: Front seat height, tilt and/or extension movement noisy
Pinpoint Test E
- WARNING: Before work is carried out, make the air bag supplemental restraint system safe. For additional information, refer to Standard Workshop Practices section of workshop manual.
- Compare the front seat movement noise to other front seat.
- Compare the front seat height, tilt or extension movement noise to front seat in other vehicle.
- Check for debris obstructing seat movement.
- Check and apply manufacturer approved lubrication to seat height, tilt or extension movement mechanism and re-test for noise.
Pinpoint Test F: Heater And Cooling - Inoperative
Pinpoint Test F
- Check the Climate Controlled Seat Module for stored DTC's.
- WARNING: Before work is carried out, make the air bag supplemental restraint system safe. For additional information, refer to Standard Workshop Practices section of workshop manual.
- NOTE: The Climate Controlled Seat's (heat and cool) function will only operate when the vehicle's engine is running.
- NOTE: If a fault is identified and repaired, check for correct operation of the driver and front-passenger climate controlled seat (heat and cool) functions.
- Check the heat and cool function of the backrest.
- Check the heat and cool function at the cushion.
- Check the condition of the bellows.
- Check the security of the bellows duct.
- Check the security of the bellows.
Pinpoint Test H: Heating And Cooling - Poor Heat Or Cool Efficiency
Pinpoint Test H
- Check the Climate Controlled Seat Module for stored DTC's.
- WARNING: Before work is carried out, make the air bag supplemental restraint system safe. For additional information, refer to Standard Workshop Practices section of workshop manual.
- NOTE: The Climate Controlled Seat's (heat and cool) function will only operate when the vehicle's engine is running.
- NOTE: If a fault is identified and repaired, check for correct operation of the driver and front-passenger climate controlled seat (heat and cool) functions.
- Check the heat and cool function of the backrest.
- Check the heat and cool function at the cushion.
- Check the condition of the bellows.
- Check the security of the bellows duct.
- Check the security of the bellows.
- Compare the efficiency of the suspect climate seat assembly to another climate seat assembly.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage. VISUAL INSPECTION Mechanical Electrical Seat heater switches condition and installation Fuses Harnesses and connectors Seat heater module Seat heater switches Seat heater mat
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, check for Diagnostic Trouble Codes (DTC's) and refer to the DTC Index.
Note. 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 program is in operation, prior to the installation of a new module/component.
Note. 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 additional information read by the manufacturer approved diagnostic system).
Note. 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.
Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
Note. Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
Note. 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.
Note. CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00.
DTC Index
For a complete list of all diagnostic trouble codes that could be logged on this vehicle, please refer to section 100-00.
Note. To ensure an accurate resistance reading, calibrated test equipment must be used
| Vehicle / Year | Cushion / Backrest | Heater Mat / NTC Resistor | Left Hand Drive | Right Hand Drive | Minimum Resistance | Maximum Resistance | |||
|---|---|---|---|---|---|---|---|---|---|
| Passenger Side Connector / Pin | Driver Side Connector / Pin | Passenger Side Connector / Pin | Driver Side Connector / Pin | Ohms At 20°C ±10°C | Ohms At 20°C ±10°C | ||||
| XK 2010 | Cushion | Heater mat | PS002/1 and PS002/4 | DS002/1 and DS002/4 | PS002/1 and PS002/4 | DS002/1 and DS002/4 | 1, 2 | 1, 6 | |
| NTC resistor | PS002/2 and PS002/3 | DS002/2 and DS002/3 | PS002/2 and PS002/3 | DS002/2 and DS002/3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | PS003/1 and PS003/2 | DS003/1 and DS003/2 | PS003/1 and PS003/2 | DS003/1 and DS003/2 | 0, 35 | 0, 47 | ||
| XF | Cushion | Heater mat | C3HS07A/1 and C3HS07A/4 | C3HS02A/1 and C3HS02A/4 | C3HS07A/1 and C3HS07A/4 | C3HS02A/1 and C3HS02A/4 | 1, 23 | 1, 64 | |
| NTC resistor | C3HS07A/2 and C3HS07A/3 | C3HS02A/2 and C3HS02A/3 | C3HS07A/2 and C3HS07A/3 | C3HS02A/2 and C3HS02A/3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | C3HS06A/1 and C3HS06A/2 | C3HS01A/1 and C3HS01A/2 | C3HS06A/1 and C3HS06A/2 | C3HS01A/1 and C3HS01A/2 | 0, 82 | 1, 09 | ||
| XJ 2008 | Cushion | Heater mat | SP14-1 and SP14-4 | SD14-1 and SD14-4 | SP14-1 and SP14-4 | SD14-1 and SD14-4 | 1, 28 | 1, 71 | |
| NTC resistor | SP14-2 and SP14-3 | SD14-2 and SD14-3 | SP14-2 and SP14-3 | SD14-2 and SD14-3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | SP15-1 and SP15-2 | SD15-1 and SD15-2 | SP15-1 and SP15-2 | SD15-1 and SD15-2 | 0, 88 | 1, 17 | ||
| XJ 2010 Front | Cushion | Heater mat | C3HS07/1 and C3HS07/4 | C3HS02/1 and C3HS02/4 | C3HS07/1 and C3HS07/4 | C3HS02/1 and C3HS02/4 | 0, 99 | 1, 32 | |
| NTC resistor | C3HS07/2 and C3HS07/3 | C3HS02/2 and C3HS02/3 | C3HS07/2 and C3HS07/3 | C3HS02/2 and C3HS02/3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | C3HS06/1 and C3HS06/2 | C3HS01/1 and C3HS01/2 | C3HS06/1 and C3HS06/2 | C3HS01/1 and C3HS01/2 | 0, 67 | 0, 90 | ||
| XJ 2010 Rear | Cushion | Heater mat | C3HS78/1 and C3HS78/4 | C3HS76/1 and C3HS76/4 | C3HS76/1 and C3HS76/4 | C3HS78/1 and C3HS78/4 | 0, 99 | 1, 32 | |
| NTC resistor | C3HS78/2 and C3HS78/3 | C3HS76/2 and C3HS76/3 | C3HS76/2 and C3HS76/3 | C3HS78/2 and C3HS78/3 | 4 000 | 10 000 | |||
| Backrest | Heater mat | C3HS79/1 and C3HS79/4 | C3HS77/1 and C3HS77/4 | C3HS77/1 and C3HS77/4 | C3HS79/1 and C3HS79/4 | 1, 0 | 1, 3 | ||
SEAT HEATER MAT APPLICATION CHART
Pinpoint Test: Seat Heater Mat
Pinpoint Test J
- Where possible use the manufacturer approved diagnostic system to review any logged seat heater mat DTC's
- NOTE: The manual check should be carried out by someone familiar with correct seat heat operation
- NOTE: On full power the seat should be hot to touch
- If required operate the vehicle air conditioning on full for 10 minutes to reduce the in vehicle ambient temperature
- Operate the seat heater on full power
- Refer to the electrical circuit diagrams and the seat heater mat application chart (see above) to identify the connector
- Disconnect the connector
- Refer to the electrical circuit diagrams and check the seat heater mat heater circuit and the NTC resistor circuit for short circuit to ground
- Refer to the electrical circuit diagrams and check the seat heater mat (heater circuit) for circuit continuity
- NOTE: The seat heater power supply cycles on and off dependent on the seat and cabin temperature and may only switch on for 5 seconds in 30 seconds
- Reconnect the connector
- Operate the vehicle air conditioning on full for 10 minutes to reduce the in vehicle ambient temperature
- Refer to the electrical circuit diagrams and check the seat heater mat (heater circuit) using a current clamp
- Operate the seat heater on full power
- Use the chart above to calculate typical value (V/R=I) ( Volts divided by Resistance equals Current in Amps )
- Examples (12 volts / 0.5 ohms =24 amps) (12 volts / 1 ohms = 12 amps) (12 volts / 2 ohms = 6 amps)
- NOTE: Ensure the multimeter used is calibrated and a resistance reading of 0 ohms is shown when the test leads are connected together, alternately subtract any resistance shown from the result
- NOTE: The seat heater mat circuits should be checked at the seat heater module connector
- NOTE: Refer to the electrical circuit diagrams and to confirm the total resistance of the circuit the cushion and backrest are connected in series
- Refer to the electrical circuit diagrams and the seat heater mat application chart (see above) to identify the terminals
- Disconnect the connector
- Using a multimeter, carry out a resistance check of the seat heater mat heater circuit and the NTC resistor circuit . Record the results
- Compare the results to the chart (see above)
- Are the results within specification at the given ambient temperature? (tolerance +/- 0.5 Ohms)
| 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 checked and/or the donor vehicle |
Note. 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 program is in operation, prior to the installation of a new module/component
Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests
Note. 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
Note. The DTC index containing an actions list is for guidance only any reference to "check and install new blower unit" should only be carried out following failure confirmation using the pin out diagnostics and/or the over temperature and fluid/air leak diagnostics contained below. The recording of a DTC does NOT signify a permanently failed unit
Note. The climate system functions in a manner that means any detected error state either intermittent or permanent will shut down the complete seat climate system until the next ignition cycle, this does not mean that both climate units within the one seat have failed. This shut down is design intent to protect the system to ensure that the fault detected does not damage the units, it is possible that both units are functioning correctly and that the fault lies elsewhere within the system. The following process can be carried out without removing either the seats or the climate units from the vehicle and should correctly identify any failed units, this should ensure that only failed units are changed under warranty. Any units exhibiting the correct reading as per process below, should NOT be changed under warranty. If all units have a correct reading then re-confirm customer symptom, if customer symptom is still present then carry out further system checks
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage VISUAL INSPECTION Mechanical Electrical Seat heater switch condition and installation Battery condition and state of charge Fuses Harnesses and connectors Seat heater switch(es) Seat heater elements Seat module(s) Ignition switch Battery junction box Central junction box LIN circuit
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, verify the concern and refer to the Symptom Chart, alternatively, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.
- Allow 30 mins since the last seat/cooled operation prior to carrying out pin testing detailed below in the section "Connector and Pin Information"
- Locate climate seat module, (refer to Electrical Information - Electrical Reference Library, contained in TOPIx) for guidance on how to gain access to the connector(s)
- Locate and disconnect relevant connector prior to pin test
- Using ohm-meter to probe each heat/cooled unit pins (at rear of connector), reading should achieve no greater than 10 ohms after 1 minute (initial fluctuations in readings may occur using ohm-meter, post 1 minute readings will have stabilized)
Over Temperature and Fluid/Air Leak Diagnostics
| Check For Air Flow Specific DTCs | Diagnostic Guidance Notes |
|---|---|
| B120F-98 B122E-98 B122F-98 B1230-98 B1231-7A B1232-7A | Once the diagnostic process detailed above has been carried out and it has been identified that there has not been a failure of any of the climate units, then refer back to the relevant climate system DTC codes that have been recorded DTC codes listed that end in 7A or 98 indicate a possible air leak or air flow restriction within the system In these circumstances, starting with the seat base check all ducting connections for correct engagement and inspect ducting for signs of damage which could result in an air leak (for connection issues re-connect and test system). Only in the event of finding damage to the ducting of one of the units should the unit be replaced. Note that only the specific unit should be replaced Due to the design function of the system, both climate units in any one seat operate integrally. Therefore, if an issue is detected in one of the units then both units are shut down to protect the system until next ignition cycle. Under these circumstances, only replace the damaged unit and DO NOT replace both units |
| CAUTION | When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00. |
Note. 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 program is in operation, prior to the installation of a new module/component.
Note. 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 additional information read by the manufacturer approved diagnostic system).
Note. 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.
Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
Note. Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
Note. 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 Cause Action B10B913 Blower Control Left blower control circuit - open circuit Left blower motor - open circuit Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left blower control circuit for open circuit. Check and install new left blower motor, climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B10B94B Blower Control Mechanical restriction within the left blower motor housing Left blower control circuit - short to ground Left blower motor - short to ground Climate controlled seat module failure Check for mechanical restriction within the left blower motor housing. Refer to the electrical circuit diagrams and check left blower control circuit for short to ground. Check and install new left blower motor, climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B115713 Blower Control "B" Right blower control circuit - open circuit Right blower motor - open circuit Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right blower control circuit for open circuit. Check and install new right blower motor, climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B11574B Blower Control "B" Mechanical restriction within the right blower motor housing Right blower control circuit - short to ground Right blower motor - short to ground Climate controlled seat module failure Check for mechanical restriction within the right blower motor housing. Refer to the electrical circuit diagrams and check right blower control circuit for short to ground. Check and install new right blower motor, climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B120E13 Right Thermal Electric Device Control Right seatback/cushion thermal electric device control circuits - open circuit Thermal electric device failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seatback/cushion thermal electric device control circuits for open circuit. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B120E19 Right Thermal Electric Device Control Right seatback/cushion thermal electric device control circuits - short to ground Thermal electric device failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seatback/cushion thermal electric device control circuits for short to ground. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B120E4B Right Thermal Electric Device Control Right seatback/cushion thermal electric device control circuits - short to ground Blocked thermal electric device duct (restriction in airflow) Thermal electric device failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Check for restriction in thermal electric device duct. Refer to the electrical circuit diagrams and check right seatback/cushion thermal electric device control circuits for short to ground. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B122413 Left Thermal Electric Device Control Left seatback/cushion thermal electric device control circuits - open circuit Thermal electric device failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seatback/cushion thermal electric device control circuits for open circuit. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B122419 Left Thermal Electric Device Control Left seatback/cushion thermal electric device control circuits - short to ground Thermal electric device failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seatback/cushion thermal electric device control circuits for short to ground. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B12244B Left Thermal Electric Device Control Left seatback/cushion thermal electric device control circuits - short to ground Blocked thermal electric device duct (restriction in airflow) Thermal electric device failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Check for restriction in thermal electric device duct. Refer to the electrical circuit diagrams and check left seatback/cushion thermal electric device control circuits for short to ground. Check and install new thermal electric device/climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index B122A11 Right Seat Cushion Blower Speed Sensor Right seat cushion blower speed sensor circuit - short to ground Internal motor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check right seat cushion blower speed sensor circuit for short to ground. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index B122A12 Right Seat Cushion Blower Speed Sensor Right seat cushion blower speed sensor circuit - short to power Internal motor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check right seat cushion blower speed sensor circuit for short to power. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index B122B11 Right Seat Back Blower Speed Sensor Right seatback blower speed sensor circuit - short to ground Internal motor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check right seatback blower speed sensor circuit for short to ground. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index B122B12 Right Seat Back Blower Speed Sensor Right seatback blower speed sensor circuit - short to power Internal motor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check right seatback blower speed sensor circuit for short to power. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index B122C11 Left Seat Cushion Blower Speed Sensor Left seat cushion blower speed sensor circuit - short to ground Internal motor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check left seat cushion blower speed sensor circuit for short to ground. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index B122C12 Left Seat Cushion Blower Speed Sensor Left seat cushion blower speed sensor circuit - short to power Internal motor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check left seat cushion blower speed sensor circuit for short to power. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index B122D11 Left Seat Back Blower Speed Sensor Left seatback blower speed sensor circuit - short to ground Internal motor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check left seatback blower speed sensor circuit for short to ground. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index B122D12 Left Seat Back Blower Speed Sensor Left seatback blower speed sensor circuit - short to power Internal motor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check left seatback blower speed sensor circuit for short to power. Check and install a new motor/module as required, refer to the new module/component installation note at the top of the DTC Index B122E13 Right Seat Cushion Right seat cushion temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check right seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index B122E98 Right Seat Cushion Blockage in the right seat cushion thermal electric device fan exhaust vent Right seat cushion thermal electric device fan movement restricted Check/remove any blockage/restriction from the right seat cushion thermal electric device fan exhaust vent B122F13 Right Seat Back Right seatback temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seatback temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index B122F98 Right Seat Back Blockage in the right seatback thermal electric device fan exhaust vent Right seatback thermal electric device fan movement restricted Check/remove any blockage/restriction from the right seatback thermal electric device fan exhaust vent B120F13 Left Seat Cushion Left seat cushion temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure Refer to the electrical circuit diagrams and check left seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index B120F98 Left Seat Cushion Blockage in the left seat cushion thermal electric device fan exhaust vent Left seat cushion thermal electric device fan movement restricted Check/remove any blockage/restriction from the left seat cushion thermal electric device fan exhaust vent B123013 Left Seat Back Left seatback temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check left seatback temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index B123098 Left Seat Back Blockage in the left seatback thermal electric device fan exhaust vent Left seatback thermal electric device fan movement restricted Check/remove any blockage/restriction from the left seatback thermal electric device fan exhaust vent B12317A Right Seat Temperature difference between seatback and cushion Check/remove any blockage/restriction from the right seatback and cushion thermal electric device fan exhaust vent B12327A Left Seat Temperature difference between seatback and cushion Check/remove any blockage/restriction from the right seatback and cushion thermal electric device fan exhaust vent B122313 Right Seat Cushion Temperature Sensor Right seat cushion temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index B122513 Right Seat Back Temperature Sensor Right seat back temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index B122913 Left Seat Back Temperature Sensor Left seatback temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index B123513 Left Seat Cushion Temperature Sensor Left seat cushion temperature sensor circuit - open circuit Temperature sensor failure Climate controlled seat module failure Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check right seat cushion temperature sensor circuit for open circuit. Check and install a new sensor/module as required, refer to the new module/component installation note at the top of the DTC Index U000188 High Speed CAN Communication Bus Bus off Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network to climate controlled seat module for short, open circuit U001088 Medium speed Can communication Bus Bus off Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network to climate controlled seat module for short, open circuit U014000 Lost communication with CJB Lost communication with CJB Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system U014200 Lost communication with RJB Lost communication with RJB Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system U015500 Lost communications with instrument cluster Lost communications with instrument cluster Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check CAN network to climate controlled seat module and instrument cluster for short, open circuit U015600 Lost Communication With Information Centre "A" Lost communications with information and entertainment control module Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system U030000 Internal control module software incompatibility Invalid configuration message is received Re-configure the climate controlled seat module and the RJB using the manufacturer approved diagnostic system. Clear the DTC and retest. If the DTC is still logged suspect the climate controlled seat module, refer to the new module installation note at the top of the DTC Index U040100 Invalid Data Received From ECM/PCM Poor engine speed quality factor Check ECM for speed 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 U210100 Control Module Configuration Incompatible Calibration incomplete/corrupt Re-configure the climate controlled seat module using the manufacturer approved diagnostic system U300004 Control Module Internal electronic failure Check and install a new climate controlled seat module as required, refer to the new module/component installation note at the top of the DTC Index U300362 Battery Voltage Mis-match in battery voltage, of 2 volts or more, between climate controlled seat module and RJB Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system
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- Make the air bag supplemental restraint system (SRS) safe. Refer to «Standard Workshop Practices»(ref-568389-S00771621212013072200000) information.
- Position the front seat fully forwards. Lower the front seat head restraint to the fully lowered position.
- Remove the safety belt lower anchor trim panel.
- Release the safety belt lower anchor from the front seat.
- Remove the 2 rear bolts from the front seat.
- Position the front seat fully rearwards.
- Remove the 2 front bolts from the front seat.
- Reposition the front seat to the central position.
- Disconnect the battery ground cable. Refer to «Battery Disconnect and Connect»(ref-568400-S03532047432013072200000) information.
- Disconnect the front seat harness electrical connectors. Tilt the front seat rearwards to aid disconnecting the front seat electrical connectors.
- Remove the front seat.