Seating: Other Lincoln LS I рестайлинг

Seat Side Air Bag or Seat Side Thorax Air Bag

Driver and passenger seat side air bags or seat side thorax air bag are attached to the seat backrest frame. For diagnostic information or if the seat side air bag or seat side thorax air bag has been deployed, refer to AIR BAG RESTRAINT SYSTEMS .

The front seat backrest trim covers cannot be repaired. If the front seat backrest covers need to be repaired, an entirely new cover must be installed. Cleaning the front seat backrest cover is permissible.

If a seat side air bag or seat side thorax air bag deployment took place, a new seat back pad, trim cover and side air bag module must be installed. Install a new seat backrest frame if necessary.

Seats - Driver Seat Module

The driver seat module is attached to the driver seat track. For additional information, refer to MODULE COMMUNICATIONS NETWORK - LS for removal and installation procedures.

Driver Power Seat

The driver power seat motors are hardwired to the driver seat control switch. The circuits are normally at ground through the seat control switch. The individual circuit is switched to power when the specific adjustment position is selected.

Driver Power Seat - Memory

Note. The memory power seat track may stall when operating at 0°C (32°F) or below. Once the vehicle's interior temperature rises above 0°C (32°F), normal operation should return.

The driver power seat is controlled by the driver seat module (DSM). The DSM does not need to be configured, however the driver seat does need to be calibrated when the DSM is installed. The driver seat control switch provides voltage to the DSM when activated. The neutral position of each driver seat control switch position is a ground state through the seat control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate line from ground to power to adjust the motors.

As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove power from the motor upon termination of the seat control switch input or if the DSM does not see movement from the motor by monitoring the position sensor. The DSM must be calibrated to the seat track it is controlling. For additional information, refer to Seat Calibration. Once the DSM is calibrated to the seat track, it will only allow movement within the calibrated range.

Memory Seat

Memory seat positioning can be recalled with the memory switches on the driver door panel or a programmed remote keyless entry transmitter. In either case, the DSM receives a memory recall 1 or 2 command from the driver door module (DDM) over the SCP communication network. The memory recall switches are a hardwired input to the DDM. The DDM also receives the remote keyless entry transmitter signals. Once a valid memory recall command is received from the DDM, the DSM moves the driver seat to the position stored in memory by powering the appropriate motors and monitoring the motor position sensors until the position is reached.

This system allows automatic positioning of the driver seat to two programmable positions.

1. To program position one, move the driver seat to the desired position using the seat control switch. Depress the set button. Within five seconds, depress button one.
2. To program position two, repeat the previous procedure using the set button and button two.
3. To recall position one, depress button one. To recall position two, depress button two.

A position can only be recalled when the transmission selector is in PARK or NEUTRAL. A position may be programmed at any time.

Easy Exit/Easy Entry

The easy exit function moves the seat backwards about two inches when the ignition key is removed from the ignition switch. The DSM receives a key out command over the SCP communication network and powers the driver seat rearward. This function will not operate if the seat is less than the travel distance to the end of the track, or the function has been deactivated at the message center driver personality settings. The DSM will also cancel this operation if a valid input command is received, such as the seat control switch or memory recall request.

The DSM will record the current seat position before powering the seat for an easy exit function. This recorded position will be used to return the seat to this position on the easy entry operation. During easy entry operation, the seat is returned to the position previous to the easy exit operation. Easy entry operation will be cancelled if a valid input command is received by the DSM.

Passenger Power Seat

The passenger power seat motors are hardwired to the passenger seat control switch. The circuits are normally at ground through the seat control switch. The individual circuit is switched to power when the specific adjustment position is selected.

Climate Controlled Seat System

Both the driver and front passenger seat has an independent climate controlled seat system installed. A climate controlled seat module mounted to the bottom of the seat cushion electronically controls the climate controlled seat system. The climate controlled seat system receives power from both the battery power and vehicle run circuits. The vehicle must have ignition ON and the dual automatic temperature control unit (DATC) module switch set to HEAT or COOL 1, 2, 3 or AUTO for the climate controlled seat system to activate.

AUTO mode is achieved by pressing the HEAT and COOL settings simultaneously. The center LED will be illuminated when the CCSM is in AUTO mode.

Cabin air is drawn through the seat fan motor and distributed to each of the thermo-electric device (TED) modules located in the seat cushion and backrest. The TEDs then heat or cool the air. The air is then directed into the foam pad B-surface. Channels in the A-surface of the foam pad are used to distribute the air along the surface of the seat.

Once the system is activated, the climate controlled seat module uses a set of flexible algorithms to control the heating/cooling modes, and the fan motor speed based on the climate controlled seat switch settings. These algorithms are designed to protect the user from potentially harmful prolonged exposure to climate extremes.

The TED uses a "Peltier" circuit of P-type and N-type semiconductors connected in series using copper electrical conductors. The semiconductors are sandwiched between two insulating ceramic plates. When current is applied to the TED, one side releases energy as heat, while the opposite side absorbs energy and gets cold. By reversing the current flow, the hot and cold sides reverse.

The temperature differences between the individual HEAT and COOL settings is minimal. For example, it is difficult to distinguish between LOW COOL and MEDIUM COOL settings. Monitoring the seat temperature at different HEAT or COOL settings should not be done as it is ineffective in confirming climate controlled seat system operation.

Heating Characteristics

Note. The presence of over-temp faults (DTCs B2729 and B2730) can be induced by incorrect operation of the climate controlled seat system after an initial HEAT setting has been attained. If a HEAT setting is repeatedly turned OFF and ON in an attempt to increase the seat temperature, an over-temp condition can result and the DTC(s) will be set.

1. The climate controlled seat system draws approximately 7.5 amps until reaching the set point, and then the system draws approximately 2 amps to maintain the climate setting.
2. In HEAT mode, the TED can add up to 40-60°C (72-108°F) to the ambient air temperature entering the system.
3. There are three manual settings based on the position of the climate controlled seat switch on the DATC module. Position one is the LOW setting and position three is the HIGH setting.
4. There are five AUTO HEAT settings. The AUTO HEAT setting is determined by the temperature setting of the DATC module when the CCSM is in AUTO HEAT mode.
5. In the LOW setting, the climate controlled seat module is set to maintain TED temperature at 37 °C (99 °F).
6. In the HIGH setting, the climate controlled seat module is set to maintain TED temperature at 65 °C (149°F).
7. If the temperature at one of the TEDs rises above 85°C (185°F) in the HEAT mode or 70 °C (149°F) in the COOL mode for more than four seconds, the CCSM will record an overtemp DTC, remove power from the TEDs and go into "Blower Only" mode in an attempt to cool down the TEDs. If the TEDs temperature has not dropped to 80 °C (176°F) in the HEAT mode or 65 °C (140°F) in the COOL mode after 30 seconds, the CCSM will shut down and remain off until the ignition is cycled. Also if the CCSM detects an overtemp twice during the same ignition cycle, it will also shut down.
8. In HEAT mode, there is no linear correlation between the (DATC) module, the seat fan motor speed and the TED supply voltage. The CCSM will independently vary the fan speed and the TED supply voltage in order to reach and maintain the temperature determined by the (DATC) module setting. Cooling Characteristics
9. The climate controlled seat system draws approximately seven amps until reaching the set point, and then the system draws approximately two amps to maintain the temperature setting.
10. In the COOL mode, the TED can remove up to 8-10°C (14-18°F) from the ambient air temperature entering the system.
11. There are three manual settings based on the position of the climate controlled seat switch on the DATC module. Position one is the LOW setting and position three is the HIGH setting.
12. If the temperature at one of the TEDs falls below 18°C (64 °F), the climate controlled seat module will shut down the TEDs. If the temperature continues to drop below 12°C (54°F), the climate controlled seat module will shut down the fan motor.
13. In COOL mode, there is a correlation between the DATC module, the seat fan motor speed and the TED supply voltage. Fan supply voltage is used in the following equation (seat fan motor supply voltage/0.74 x ignition voltage) to determine the fan duty cycle. For additional information, refer to the following chart.

COOLING CHARACTERISTICS

The climate controlled seat system is deactivated by one of the following actions

1. Setting the DATC module setting to manual OFF.
2. Turning the vehicle off.

Rear Heated Seats

The left and right rear heated seats share a common battery and ignition feed. A separate shared ground source supplies the heated seat switches. When the heated seat switch is pressed with the ignition switch in RUN, a momentary ground signal is sent to the heated seat module. The heated seat module then supplies power to the heating element circuit. The cushion element and seat backrest element are wired in series and powered by the same output. The heated seat module will also provide voltage to the separate indicator circuit at the heated seat switch to indicate an ON state. The heated seat module will remain on until the heated seat switch is pressed and a momentary ground signal is received, or until 10 minutes expire. If the ignition source is removed from the module, the heated seat module will enter an OFF state and will not return to ON until the switch is once again pressed with the ignition switch in RUN. The heated seat module is designed to heat the seat to 37.5 °C (99.5°F) and maintain the temperature until timed-out or switched off. This temperature is maintained by the heated seat module monitoring the temperature sensor located in the seat cushion element, and adjusting the current flow to the heating elements.

Occupant Classification Sensor

Note. It is necessary to rezero the OCS system when a front passenger seat cushion is disassembled, a new trim cover installed, or an OCS service kit is installed. A scan tool is used to trigger the active command to carry out rezeroing of the OCS system.

Note. When using a New Generation Star (NGS) tester, the OCS system rezero function is on the Ford Service Function (red) card. To rezero the OCS system: select "SERVICE BAY FUNCTIONS" select "RCM" select "SYSTEM RESET" select the vehicle from the menu view the on-screen information then press "TRIGGER"

The NGS screen will then display "OCS RESET: REZERO." Press "DONE" (button 8) to rezero the OCS system. The NGS will return to the vehicle menu once rezeroing of the OCS system is complete.

Note. To rezero the OCS system using the Worldwide Diagnostic System (WDS)

1. select the "Toolbox" icon
2. select "Body" from the menu
3. select "Restraints" from the menu
4. select "Seat Weight Sensor ReZero"

After selecting "Seat Weight Sensor ReZero", follow the on-screen prompts to carry out rezeroing of the OCS system.

Note. If the first attempt to rezero the OCS system is unsuccessful, a second attempt must be made.

Note. The occupant classification sensor is found only on the front passenger seat and is not equipped on all vehicles. A white tag having the letters "OCS" (occupant classification sensor) will appear under the front of the passenger seat to identify a seat equipped with an occupant classification sensor.

The seat occupant classification sensor system is found only on the front passenger seat. The OCS system components (seat cushion foam pad, bladder, bladder with pressure sensor and electronic control unit) are calibrated to each other and are serviced as an assembly. OCS system components are not to be installed separately . If installing a new OCS system, OCS system component or seat cushion foam pad, a new OCS system service kit (seat cushion foam pad, bladder, bladder with pressure sensor and electronic control unit) must be installed as an assembly. For additional information, refer to AIR BAG RESTRAINT SYSTEMS .

Seats

Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.

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Possible Causes

No communication with the driver seat module can be caused by

1. fuse(s).
2. wiring, terminals, or connectors.
3. a faulty DSM.

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1. A1 CHECK NGS TESTER COMMUNICATION TO THE DDM Using the results from the DATA LINK DIAGNOSTICS test, check for communication to the DDM. Does the scan tool communicate with the DDM? Yes : GO to A2. No : Go To «PINPOINT TEST B»(ref-207572-S05081007382005113000000) .
2. A2 CHECK CIRCUITS 29-AH80 (OG/WH) AND 30-AH80 (RD) FOR VOLTAGE WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Driver Seat Side Air Bag Module C316. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Disconnect: DSM C341b. Disconnect: DSM C341c. Measure the voltage between DSM C341c-10, circuit 29-AH80 (OG/WH), harness side and ground; and between DSM C341b-4, circuit 30-AH80 (RD), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to A3. No : REPAIR the circuit in question. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
3. A3 CHECK CIRCUIT 31-AH80 (BK) AND 91-AH80 (BN/WH) FOR AN OPEN Measure the resistance between the DSM C341 b-3, circuit 31-AH80 (BK), harness side and ground; and between DSM C341c-2, circuit 91-AH80 (BN/WH), harness side and ground. Are the resistances less than 5 ohms? Yes : REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

No communication with driver door module can be caused by

1. fuse(s).
2. wiring, terminals, or connectors.
3. a faulty DDM.

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1. B1 CHECK CIRCUITS 29-AJ80 (OG) AND 29S-AJ86 (OG/BU) FOR VOLTAGE Key in OFF position. Disconnect: DDM C501 a. Key in ON position. Measure the voltage between DDM C501 a-11, circuit 29-AJ80 (OG), harness side and ground; and between DDM C501a-12, circuit 29S-AJ86 (OG/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B2. No : REPAIR the circuit in question. Test the system for normal operation.
2. B2 CHECK CIRCUITS 31-AJ80B (BK/OG) AND 91-AJ80 (BN/BU) FOR OPENS Key in OFF position. Measure the resistance between DDM C501 a-7, circuit 91-AJ80 (BN/BU), harness side and ground; and between DDM C501a-8, circuit 31-AJ80B (BK/OG), harness side and ground. Is the resistance less than 5 ohms? Yes : REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . No : REPAIR the circuit(s) in question. Test the system for normal operation.

An inoperative driver power seat can be caused by

1. a fuse.
2. wiring, terminals, or connectors.
3. a faulty power seat switch.
4. a faulty power seat motor.

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1. C1 CHECK CIRCUIT 30-AH35 (RD/YE) FOR VOLTAGE WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Driver Seat Side Air Bag Module C316. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Disconnect: Driver Seat Control Switch C360. Measure the voltage between driver seat control switch C360-6, circuit 30-AH35 (RD/YE), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to C2. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
2. C2 CHECK CIRCUIT 31-AH35 (BK/YE) FOR AN OPEN Measure the resistance between driver seat control switch C360-1, circuit 31-AH35 (BK/YE), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new driver seat control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

An inoperative passenger power seat can be caused by

1. a fuse.
2. wiring, terminals, or connectors.
3. a faulty power seat switch.
4. a faulty power seat motor.

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1. D1 CHECK FOR POWER TO THE PASSENGER SEAT CONTROL SWITCH WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Passenger Seat Side Air Bag Module C314. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Passenger Seat Side Air Bag Module C314. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Disconnect: Passenger Seat Control Switch C330. Measure the voltage between passenger seat control switch C330-6, circuit 30-AH42 (RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to D2. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
2. D2 CHECK CIRCUIT 31-AH42 (BK) FOR AN OPEN Measure the resistance between passenger seat control switch C330-1, circuit 31-AH42 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new passenger seat control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

A noisy power seat can be caused by

1. a misaligned seat track.
2. a faulty seat track component.
3. an object obstructing seat movement.

A loose power seat can be caused by

1. loose fastening hardware.
2. a faulty seat track component.

A power seat that does not make full travel can be caused by

1. an obstruction.
2. a faulty seat track component.

A driver power seat that does not move horizontally and/or vertically can be caused by

1. wiring, terminals, or connectors.
2. a faulty seat control switch.
3. a faulty seat track motor.
4. a faulty backrest recline motor (part of backrest frame assembly).

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1. H1 CHECK HORIZONTAL DIRECTION MOTOR FOR CORRECT OPERATION WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Driver Seat Side Air Bag Module C316. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Operate the driver power seat forward and rearward. Will the seat move horizontally? Yes : GO to H2. No : GO to H3 .
2. H2 CHECK BACKREST MOTOR FOR CORRECT OPERATION Operate the driver power seat backrest up and down. Will the seat backrest move up and down? Yes : GO to H6 . No : GO to H13 .
3. H3 CHECK THE VOLTAGE TO THE DRIVER SEAT FORWARD/REVERSE MOTOR Disconnect: Driver Seat Forward/Reverse Motor C362. Measure the voltage between driver seat forward/reverse motor C362-2, circuit 32-AH37 (WH/GN), harness side and C362-1, circuit 33-AH37 (YE/GN), harness side, while pushing the driver seat control switch forward and rearward. Is the voltage greater than 10 volts when the switch is pushed forward, greater than -10 volts when the switch is pushed rearward, and 0 volts when the switch is in a rest position? Yes : INSTALL a new driver seat forward/reverse motor. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to H4.
4. H4 CHECK CIRCUIT 32-AH37 (WH/GN) FOR AN OPEN AND SHORT TO GROUND Disconnect: Driver Seat Forward/Reverse Motor C362. Measure the resistance between driver seat control switch C360-3, circuit 32-AH37 (WH/GN), harness side and driver seat forward/reverse motor C362-2, circuit 32-AH37 (WH/GN), harness side; and between driver seat control switch C360-3, circuit 32-AH37 (WH/GN), harness side and ground. Is the resistance less than 5 ohms between the driver seat forward/reverse motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground? Yes : GO to H5. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
5. H5 CHECK CIRCUIT 33-AH37 (YE/GN) FOR AN OPEN AND SHORT TO GROUND Measure the resistance between driver seat control switch C360-11, circuit 33-AH37 (YE/GN), harness side and driver seat forward/reverse motor C362-1, circuit 33-AH37 (YE/GN), harness side; and between driver seat control switch C360-11, circuit 33-AH37 (YE/GN), harness side and ground. Is the resistance less than 5 ohms between the driver seat forward/reverse motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground? Yes : INSTALL a new driver seat control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
6. H6 DETERMINE SEAT TILTING FAILURE Determine seat tilting failure. Can the seat be tilted forward or backward? Yes : If only forward tilting operates, GO to H7. If only rear tilting operates, GO to H10 . No : INSTALL a new driver seat control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
7. H7 CHECK THE VOLTAGE TO THE DRIVER SEAT REAR HEIGHT MOTOR Disconnect: Driver Seat Rear Height Motor C363. Measure the voltage between driver seat rear height motor C363-2, circuit 32-AH41 (WH/VT), harness side and C363-1, circuit 33-AH41 (YE/VT), harness side, while depressing the rear tilt switch up and down. Is the voltage greater than +10 volts when the rear tilt switch is pressed down, greater than -10 volts when the rear tilt switch is pressed up and 0 volts when the switch is in the rest position? Yes : INSTALL a new driver seat rear height motor. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to H8.
8. H8 CHECK CIRCUIT 32-AH41 (WH/VT) FOR OPEN AND SHORT TO GROUND Disconnect: Driver Seat Control Switch C360. Measure the resistance between driver seat control switch C360-8, circuit 32-AH41 (WH/VT), harness side and driver seat rear height motor C363-2, circuit 32-AH41 (WH/VT), harness side; and between driver seat control switch C360-8, circuit 32-AH41 (WH/VT), harness side and ground. Is the resistance less than 5 ohms between the driver seat rear height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground? Yes : GO to H9. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
9. H9 CHECK CIRCUIT 33-AH41 (YE/VT) FOR OPEN AND SHORT TO GROUND Measure the resistance between driver seat control switch C360-9, circuit 33-AH41 (YE/VT), harness side and driver seat rear height motor C363-1, circuit 33-AH41 (YE/VT), harness side; and between driver seat control switch C360-9, circuit 33-AH41 (YE/VT), harness side and ground. Is the resistance less than 5 ohms between the driver seat rear height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground? Yes : INSTALL a new driver seat control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
10. H10 CHECK THE VOLTAGE TO DRIVER SEAT FRONT HEIGHT MOTOR Disconnect: Driver Seat Front Height Motor C382. Measure the voltage between driver seat front height motor C382-2, circuit 33-AH38 (YE/BK), harness side and C382-1, circuit 32-AH38 (WH/BK), while pushing the rear tilting switch up and down. Is the voltage greater than +10 volts when the front tilt switch is pressed down, greater than -10 volts when the front tilt switch is pressed up and 0 volts when the switch is in the rest position? Yes : INSTALL a new driver seat front height motor. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to H11.
11. H11 CHECK CIRCUIT 32-AH38 (WH/BK) FOR OPEN AND SHORT TO GROUND Disconnect: Driver Seat Control Switch C360. Measure the resistance between driver seat control switch C360-5, circuit 32-AH38 (WH/BK), harness side and driver seat front height motor C382-1, circuit 32-AH38 (WH/BK), harness side; and between driver seat control switch C360-5, circuit 32-AH38 (WH/BK), harness side and ground. Is the resistance less than 5 ohms between the driver seat front height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground? Yes : GO to H12. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
12. H12 CHECK CIRCUIT 33-AH38 (YE/BK) FOR OPEN Measure the resistance between driver seat control switch C360-4, circuit 33-AH38 (YE/BK) harness side, and driver seat front height motor C382-2, circuit 33-AH38 (YE/BK), harness side; and between driver seat control switch C360-4, circuit 33-AH38 (YE/BK), harness side and ground. Is the resistance less than 5 ohms between the driver seat front height motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground? Yes INSTALL a new driver seat control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
13. H13 CHECK THE VOLTAGE TO DRIVER SEAT BACKREST MOTOR Disconnect: Driver Seat Backrest Motor C368. Measure the voltage between driver seat backrest motor C368-1, circuit 32-AH36 (WH/RD), harness side and C363-2, circuit 33-AH36 (YE/RD), while pushing the backrest switch forward and rearward. Is the voltage greater than 10 volts when the switch is pushed forward, greater than -10 volts when the switch is pushed rearward, and 0 volts when the switch is in a rest position? Yes : INSTALL a new driver seat backrest motor. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to H14.
14. H14 CHECK CIRCUIT 32-AH36 (WH/RD) FOR OPEN AND SHORT TO GROUND Disconnect: Driver Seat Control Switch C360. Measure the resistance between driver seat control switch C360-12, circuit 32-AH36 (WH/RD), harness side and driver seat backrest motor C368-1, circuit 32-AH36 (WH/RD), harness side; and between driver seat control switch C360-12, circuit 32-AH36 (WH/RD), harness side and ground. Is the resistance less than 5 ohms between the driver seat backrest motor and the driver seat control switch, and greater than 10,000 ohms between the driver seat control switch and ground? Yes : GO to H15. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
15. H15 CHECK CIRCUIT 33-AH36 (YE/RD) FOR OPEN Measure the resistance between driver seat control switch C360-7, circuit 33-AH36 (YE/RD) harness side, and driver seat backrest motor C368-2, circuit 33-AH36 (YE/RD), harness side; and between driver seat control switch C360-7, circuit 33-AH36 (YE/RD), harness side and ground. Is the resistance less than 5 ohms between the driver seat backrest motor and the driver seat control switch, and greater than 10,000 ohms between the seat control switch and ground? Yes : INSTALL a new driver seat control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

A memory seat that does not move horizontally/vertically can be caused by

1. a fuse.
2. wiring, terminals, or connectors.
3. a faulty memory set switch.
4. a faulty power seat track motor position sensor.
5. a faulty DSM.

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Scheme 129

1. I1 RETRIEVE THE RECORDED DSM DTCS FROM BOTH CONTINUOUS AND ON-DEMAND SELF-TESTS WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Driver Seat Side Air Bag Module C316. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Use the results recorded from the DSM continuous and on-demand self-tests. Are any DSM DTCs recorded? Yes : If DTCB1703, B1707, B1711, B1715, B1719, B1723, B1727 or B1731 was retrieved, GO to I2. If any combination of DTC B1757, B1761, B1765, B1769, B2146, B2149, B2152, or B2155 are retrieved, GO to I4 . If only a combination of DTC B2146, B2149, B2152or B2155 are retrieved, GO to I43 . No : GO to I45 .
2. I2 CHECK FOR A SHORT TO BATTERY Disconnect: DSM C341c. Key in ON position. Using the following table, measure the voltage between DSM C341c pins, harness side and ground. PINS CIRCUIT REFERENCE DSM C341c Pin Circuit 3 10-AH83 (GY/OG) 4 10-AH82 (GY/RD) 5 8-AH84 (WH/BK) 6 10-AH85 (GY/WH) 11 8-AH83 (WH/GN) 12 8-AH82 (WH/RD) 13 10-AH84(GY/BK) 14 8-AH85 (WH/VT) Are any of the voltages greater than 10 volts? Yes : GO to I3. No : CLEAR the DSM DTCs. REPEAT the DSM self-test. If DTC B1703, B1707, B1711, B1715, B1719, B1723, B1727 or B1731 is retrieved, INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . If any other DTCs are retrieved, refer to the «DSM DIAGNOSTIC TROUBLE CODE (DTC) INDEX»(ref-207572-S18389247182005113000000) .
3. I3 CHECK THE DRIVER SEAT CONTROL SWITCH FOR A SHORT TO BATTERY Key in OFF position. Disconnect: Driver Seat Control Switch C360. Key in ON position. Using the following table, measure the voltage between DSM C341c pins, harness side and ground. PINS CIRCUIT REFERENCE DSM C341c Pin Circuit 3 10-AH83 (GY/OG) 4 10-AH82 (GY/RD) 5 8-AH84 (WH/BK) 6 10-AH85 (GY/WH) 11 8-AH83 (WH/GN) 12 8-AH82 (WH/RD) 13 10-AH84 (GY/BK) 14 8-AH85 (WH/VT) Are any of the voltages greater than 10 volts? Yes : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the DSM self-test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : INSTALL a new driver seat control switch. CLEAR the DTCs. REPEAT the DSM self-test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
4. I4 CHECK FOR MULTIPLE DSM DTCS Use the results recorded from the DSM continuous and on-demand self-tests. Are the DSM DTCs B1757, B1761 and B1765 all retrieved? Yes : GO to I5. No : GO to I10 .
5. I5 CHECK THE HORIZONTAL POSITION SENSOR COMMON RETURN Key in OFF position. Disconnect: Horizontal Position Sensor C372. Measure the resistance between horizontal position sensor C372-3, circuit 9-AH26 (BN/RD), harness side and ground. Is the resistance less than 180 ohms? Yes : GO to I7 . No : GO to I6.
6. I6 CHECK CIRCUIT 9-AH26 (BN/RD) FOR AN OPEN Disconnect: DSM C341a. Measure the resistance between horizontal position sensor C372-3, circuit 9-AH26 (BN/RD), harness side and DSM C341 a-11, circuit 9-AH80 (BN/WH), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
7. I7 CHECK THE POSITION SENSOR COMMON FEED Measure the voltage between horizontal position sensor C372-1, circuit 7-AH26 (YE/RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to I10 . No : GO to I8.
8. I8 CHECK CIRCUIT 7 -AH26 (YE/RD) FOR A SHORT TO GROUND Disconnect: DSM C341a. Measure the resistance between horizontal position sensor C372-1, circuit 7-AH26 (YE/RD), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to I9. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
9. I9 CHECK CIRCUIT 7 -AH26 (YE/RD) OR 7-AH80 (YE/VT) FOR AN OPEN Measure the resistance between horizontal position sensor C372-1, circuit 7-AH26 (YE/RD), harness side and DSM C341a-15, circuit 7-AH80 (YE/VT), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
10. I10 CHECK FOR SINGLE DTCS Key in OFF position. Use the recorded results from the DSM self-test. Was DTC B1757, B1761, B1765 or B1769 retrieved? Yes : For DTC B1757 Go to I11. For DTC B1761 GO to I19 . For DTC B1765 GO to I27 . For DTC B1769 GO to I35 . No : GO to I43 .
11. I11 CHECK VOLTAGE TO THE DRIVER SEAT REAR HEIGHT MOTOR Disconnect: Driver Seat Rear Height Motor C363. Measure the voltage between driver seat rear height motor C363-1, circuit 33-AH41 (YE/VT), harness side and driver seat rear height motor C363-2, circuit 32-AH41 (WH/VT), harness side. Operate the driver seat control switch to the rear up and rear down position. Is the voltage greater than 10 volts in both directions? Yes : GO to I15 . No : GO to I12.
12. I12 CHECK THE DSM DRIVER SIDE REAR HEIGHT MOTOR CONTROL Measure the voltage between driver seat rear height motor C363-1, circuit 33-AH41 (YE/VT), harness side and ground while operating the driver seat control switch to the rear down position; and between driver seat rear height motor C363-2, circuit 32-AH41 (WH/VT), harness side and ground while operating the driver seat control switch to the rear up position. Is the voltage greater than 10 volts in both directions? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to I13.
13. I13 CHECK CIRCUIT 33-AH41 (YE/VT) AND 32-AH41 (WH/VT) FOR A SHORT TO GROUND Disconnect: DSM C341a. Measure the resistance between driver seat rear height motor C363-1, circuit 33-AH41 (YE/VT), harness side and ground; and between driver seat rear height motor C363-2, circuit 32-AH41 (WH/VT), harness side and ground. Are the resistances greater than 10,000 ohms? Yes : GO to I14. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
14. I14 CHECK CIRCUIT 33-AH41 (YE/VT) AND 32-AH41 (WH/VT) FOR AN OPEN Measure the resistance between driver seat rear height motor C363-1, circuit 33-AH41 (YE/VT), harness side and DSM C341a-8, circuit 33-AH41 (YE/VT), harness side; and between driver seat rear height motor C363-2, circuit 32-AH41 (WH/VT), harness side and DSM C341a-16, circuit 32-AH41 (WH/VT), harness side. Are the resistances less than 5 ohms? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the DSM self-test. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
15. I15 CHECK CIRCUIT 9-AH25 (BN/GN) FOR AN OPEN Disconnect: Rear Height Motor Position Sensor C373. Measure the resistance between rear height motor position sensor C373-3, circuit 9-AH25 (BN/GN), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to I16. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
16. I16 CHECK CIRCUIT 7-AH25 (YE/GN) FOR AN OPEN Measure the voltage between rear height motor position sensor C373-1, circuit 7-AH25 (YE/GN), harness side and ground. Is the voltage approximately 5 volts? Yes : GO to I17. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
17. I17 CHECK CIRCUIT 8-AH25 (WH/GN) FOR A SHORT TO GROUND Key in OFF position. Disconnect: DSM C341a. Measure the resistance between rear height motor position sensor C373-2, circuit 8-AH25 (WH/GN), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to I18. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
18. I18 CHECK CIRCUIT 8-AH25 (WH/GN) FOR AN OPEN Measure the resistance between rear height motor position sensor C373-2, circuit 8-AH25 (WH/GN), harness side and DSM C341a-14, circuit 8-AH25 (WH/GN), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new seat track. CALIBRATE the driver seat. REFER to Principles of Operation. REPEAT the DSM self-test. If DTCB1757is retrieved, INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat. REFER to Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
19. I19 CHECK THE DRIVER SEAT FRONT HEIGHT MOTOR SUPPLY Disconnect: Driver Seat Front Height Motor C382. Measure the voltage between driver seat front height motor C382-2, circuit 33-AH38 (YE/BK), harness side and driver seat front height motor C382-1, circuit 32-AH38 (WH/BK), harness side. Operate the driver seat control switch to the front up and front down position. Is the voltage greater than 10 volts in both directions? Yes : GO to I23 . No : GO to I20.
20. I20 CHECK THE DSM DRIVER SEAT FRONT HEIGHT MOTOR CONTROL Measure the voltage between driver seat front height motor C382-2, circuit 33-AH38 (YE/BK), harness side and ground while operating the driver seat control switch to the front down position; and between driver seat front height motor C382-1, circuit 32-AH38 (WH/BK), harness side and ground, while operating the driver seat control switch to the front up position. Is the voltage greater than 10 volts in both directions? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to I21.
21. I21 CHECK CIRCUIT 33-AH38 (YE/BK) AND 32-AH38 (WH/BK) FOR A SHORT TO GROUND Disconnect: DSM C341a. Measure the resistance between driver seat front height motor C382-2, circuit 33-AH38 (YE/BK), harness side and ground; and between driver seat front height motor C382-1, circuit 32-AH38 (WH/BK), harness side and ground. Are the resistances greater than 10,000 ohms? Yes : GO to I22. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
22. I22 CHECK CIRCUIT 33-AH38 (YE/BK) AND 32-AH38 (WH/BK) FOR AN OPEN Measure the resistance between driver seat front height motor C382-2, circuit 33-AH38 (YE/BK), harness side and DSM C341a-7, circuit 33-AH38 (YE/BK), harness side; and between driver seat front height motor C382-1, circuit 32-AH38 (WH/BK), harness side and DSM C341a-17, circuit 32-AH38 (WH/BK), harness side. Are the resistances less than 5 ohms? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
23. I23 CHECK CIRCUIT 9-AH24 (BN/YE) FOR AN OPEN Disconnect: Front Height Motor Position Sensor C383. Measure the resistance between front height motor position sensor C383-1, circuit 9-AH24 (BN/YE), harness side and ground. Is the resistance less than 5 ohms? Yes GO to I24. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
24. I24 CHECK CIRCUIT 7-AH24 (YE/BK) FOR AN OPEN Measure the voltage between front height motor position sensor C383-3, circuit 7-AH24 (YE/BK), harness side and ground. Is the voltage approximately 5 volts? Yes : GO to I25. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
25. I25 CHECK CIRCUIT 8-AH24 (WH/BK) FOR A SHORT TO GROUND Disconnect: DSM C341a. Measure the resistance between front height motor position sensor C383-2, circuit 8-AH24 (WH/BK), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to I26. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
26. I26 CHECK CIRCUIT 8-AH24 (WH/BK) FOR AN OPEN Measure the resistance between front height motor position sensor C383-2, circuit 8-AH24 (WH/BK), harness side and DSM C341a-5, circuit 8-AH24 (WH/BK), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new seat track. CALIBRATE the driver seat. REFER to Principles of Operation. REPEAT the self test. If DTC B1761 is retrieved, INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat. REFER to Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
27. I27 CHECK THE VOLTAGE TO THE DRIVER SEAT FORWARD/REARWARD MOTOR Disconnect: Driver Seat Forward/Rearward Motor C362. Measure the voltage between driver side forward/rearward motor C362-1, circuit 33-AH37 (YE/GN), harness side and driver side forward/rearward motor C362-2, circuit 32-AH37 (WH/GN), harness side. Operate the driver seat control switch to the forward and rearward position. Is the voltage greater than 10 volts in both directions? Yes : GO to I31 . No : GO to I28.
28. I28 CHECK THE DSM FORWARD/REARWARD MOTOR CONTROL Measure the voltage between driver side forward/rearward motor C362-1, circuit 33-AH37 (YE/GN), harness side and ground while operating the driver seat control switch to the rearward position; and between driver side forward/rearward motor C362-2, circuit 32-AH37 (WH/GN), harness side and ground while operating the driver seat control switch to the forward position. Is the voltage greater than 10 volts in both directions? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to I29.
29. I29 CHECK CIRCUIT 33-AH37 (WH/GN) AND 32-AH37 (YE/GN) FOR A SHORT TO GROUND Disconnect: DSM C341. Measure the resistance between driver side forward/rearward motor C362-1, circuit 33-AH37 (YE/GN), harness side and ground; and between driver side forward/rearward motor C362-2, circuit 32-AH37 (WH/GN), harness side and ground. Are the resistances greater than 10,000 ohms? Yes : GO to I30. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
30. I30 CHECK CIRCUIT 33-AH37 (YE/GN) AND 32-AH37 (WH/GN) FOR AN OPEN Measure the resistance between driver side forward/rearward motor C362-1, circuit 33-AH37 (YE/GN), harness side and DSM C341a-1, circuit 33-AH37 (YE/GN), harness side; and between driver side forward/rearward motor C362-2, circuit 32-AH37 (WH/GN), harness side and DSM C341a-10, circuit 32-AH9 (WH/GN), harness side. Are the resistances less than 5 ohms? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
31. I31 CHECK CIRCUIT 9-AH26 (BN/RD) FOR AN OPEN Disconnect: Forward/Rearward Motor Position Sensor C372. Measure the resistance between forward/rearward motor position sensor C372-3, circuit 9-AH26 (BN/RD), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to I32. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
32. I32 CHECK CIRCUIT 7-AH26 (YE/RD) FOR AN OPEN Measure the voltage between forward/rearward motor position sensor C372-1, circuit 7-AH26 (YE/RD), harness side and ground. Is the voltage approximately 5 volts? Yes : GO to I33. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the DSM self-test. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
33. I33 CHECK CIRCUIT 8-AH26 (WH/RD) FOR A SHORT TO GROUND Disconnect: DSM C341a. Measure the resistance between forward/rearward motor position sensor C372-2, circuit 8-AH26 (WH/RD), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to I34. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
34. I34 CHECK CIRCUIT 8-AH26 (WH/RD) FOR AN OPEN Measure the resistance between forward/rearward motor position sensor C372-2, circuit 8-AH26 (WH/RD), harness side and DSM C341a-4, circuit 8-AH26 (WH/RD), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new seat track. CALIBRATE the driver seat. REFER to Principles of Operation. REPEAT the DSM self-test. If DTC B1765is retrieved, INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat. REFER to Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
35. I35 CHECK THE DRIVER SEAT BACKREST MOTOR SUPPLY Disconnect: Driver Seat Backrest Motor C368. Measure the voltage between driver seat backrest motor C368-2, circuit 33-AH36 (YE/RD), harness side and driver seat backrest motor C368-1, circuit 32-AH36 (WH/RD), harness side, while operating the driver seat control switch to the recline forward and recline rearward position. Is the voltage greater than 10 volts in both directions? Yes : GO to I39 . No : GO to I36.
36. I36 CHECK THE DSM BACKREST MOTOR CONTROL Measure the voltage between driver seat backrest motor C368-2, circuit 33-AH36 (YE/RD), harness side and ground while operating the driver seat control switch to the backrest forward position; and between driver seat backrest motor C368-1, circuit 32-AH36 (WH/RD), harness side and ground while operating the driver seat control switch to the backrest rearward position. Is the voltage greater than 10 volts in both directions? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to I37.
37. I37 CHECK CIRCUIT 33-AH36 (YE/RD) AND 32-AH36 (WH/RD) FOR A SHORT TO GROUND Disconnect: DSM C341a. Measure the resistance between driver seat backrest motor C368-2, circuit 33-AH36 (YE/RD), harness side and ground; and between driver seat backrest motor C368-1, circuit 32-AH34 (WH/RD), harness side and ground. Are the resistances greater than 10,000 ohms? Yes : GO to I38. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
38. I38 CHECK CIRCUIT 33-AH36 (YE/RD) AND 32-AH36 (WH/RD) FOR AN OPEN Measure the resistance between driver seat backrest motor C368-2, circuit 33-AH36 (YE/RD), harness side and DSM C341a-9, circuit 33-AH36 (YE/RD), harness side; and between driver seat backrest motor C368-1, circuit 32-AH36 (WH/RD), harness side and DSM C341a-2, circuit 32-AH36 (WH/RD), harness side. Are the resistances less than 5 ohms? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
39. I39 CHECK CIRCUIT 9-AH30 (BN/BU) FOR AN OPEN Disconnect: Backrest Motor Position Sensor C376. Measure the resistance between backrest motor position sensor C376-3, circuit 9-AH30 (BN/BU), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to I40. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
40. I40 CHECK CIRCUIT 7-AH30 (YE/BU) FOR AN OPEN Measure the voltage between backrest motor position sensor C376-1, circuit 7-AH30 (YE/BU), harness side and ground. Is the voltage approximately 5 volts? Yes : GO to I41. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
41. I41 CHECK CIRCUIT 8-AH30 (WH/BU) FOR A SHORT TO GROUND Disconnect: DSM C341a. Measure the resistance between backrest motor position sensor C376-2, circuit 8-AH30 (WH/BU), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to I42. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
42. I42 CHECK CIRCUIT 8-AH30 (WH/BU) FOR AN OPEN Measure the resistance between backrest motor position sensor C376-2, circuit 8-AH30 (WH/BU), harness side and DSM C341a-13, circuit 8-AH30 (WH/BU), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new seat backrest frame assembly. CALIBRATE the driver seat. REFER to Principles of Operation. REPEAT the DSM self-test. If DTC B1769 is retrieved, INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat. REFER to Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
43. I43 CHECK FOR HESITATION OR JOGGING Key in ON position. Enter the following diagnostic mode on the diagnostic tool: Clear all DSM DTCs. Enter the following diagnostic mode on the diagnostic tool: Clear all DSM DTCs. Enter the following diagnostic mode on the diagnostic tool: Operate the driver seat control switch through all positions while monitoring DSM PIDs SFNT_MT, SREARMT, SFWD_MT and SRCL_MT, and watching seat movement. Did the driver seat stop or hesitate, or did any of the DSM PIDs read inconsistently? Yes : INSTALL a new seat track. CALIBRATE the driver seat. REFER to Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to I44.
44. I44 CHECK FOR AN INTERMITTENT CONCERN Enter the following diagnostic mode on the diagnostic tool: Clear all DSM DTCs. Operate the driver power seat. Wiggle the harness and connectors. Inspect for any visual concerns. Enter the following diagnostic mode on the diagnostic tool: DSM Self-Test. Were any DTCs retrieved? Yes : If DTC B2146, B2149, B2152 or B2155 is retrieved, INSTALL a new seat track. CALIBRATE the driver seat. REFER to Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : CALIBRATE the driver seat. REFER to Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
45. I45 CHECK THE DRIVER SEAT CONTROL SWITCH PIDS Enter the following diagnostic mode on the diagnostic tool: Operate the driver seat control seat switch through all positions while monitoring the DSM PIDs SFNT_SW, SFWD_SW, SREARSW and SRCL_SW. Do the DSM PIDs accurately represent the seat control switch positions? Yes : INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CALIBRATE the driver seat, REFER to «SEAT CALIBRATION»(ref-207572-S02319045902005113000000) in Principles of Operation. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to I46.
46. I46 CHECK THE DRIVER SEAT CONTROL SWITCH CIRCUITS FOR AN OPEN Key in OFF position. Disconnect: DSM C341c. Using the following table, measure the resistance between DSM C341c pins, harness side and ground. PINS CIRCUIT REFERENCE DSM C341c Pin Circuit 3 10-AH83 (GY/OG) 4 10-AH82 (GY/RD) 5 8-AH84 (WH/BK) 6 10-AH85 (GY/WH) 11 8-AH83 (WH/GN) 12 8-AH82 (WH/RD) 13 10-AH84 (GY/BK) 14 8-AH85 (WH/VT) Are the resistances less than 5 ohms? Yes : GO to I47. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
47. I47 CHECK THE DRIVER SEAT CONTROL SWITCH CIRCUITS FOR A SHORT TO GROUND Disconnect: Driver Seat Control Switch C360. Using the following table, measure the resistance between DSM C341c pins, harness side and ground. PINS CIRCUIT REFERENCE DSM C341c Pin Circuit 3 10-AH83 (GY/OG) 4 10-AH82 (GY/RD) 5 8-AH84 (WH/BK) 6 10-AH85 (GY/WH) 11 8-AH83 (WH/GN) 12 8-AH82 (WH/RD) 13 10-AH84 (GY/BK) 14 8-AH85 (WH/VT) Are the resistances greater than 10,000 ohms? Yes : INSTALL a new driver seat control switch. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

A power seat that does not move horizontally and/or vertically can be caused by

1. wiring, terminals, or connectors.
2. a faulty seat control switch.
3. a faulty seat track motor.

Scheme 130

Scheme 131

Scheme 132

1. J1 CHECK THE PASSENGER SEAT MOTOR OPERATION WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Passenger Seat Side Air Bag Module C314. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Passenger Seat Side Air Bag Module C314. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Disconnect the passenger seat motor connector in question: (forward/rearward motor C332, seat height motor C333, or seat backrest motor C338). Using the following table, measure the voltage between the inoperative passenger seat motor connector, harness side and ground, while moving the seat control switch in the indicated direction: CONNECTOR PINS CIRCUIT REFERENCE Motor Connector Pin Circuit Direction of Control Switch Forward/Reverse Motor C332 2 32-AH44 (WH/GN) Forward Forward/Reverse Motor C332 1 33-AH44 Reverse (YE/GN) Height Motor C333 1 32-AH34 (WH/BK) Up Height Motor C333 2 33-AH34 (YE/BK) Down Backrest Motor C338 1 32-AH43 (WH/RD) Tilt Up Backrest Motor C338 2 33-AH43 (YE/RD) Tilt Down Are the voltages greater than 10 volts in the inoperative directions? Yes : INSTALL a new passenger seat track or the backrest frame assembly. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .. No : GO to J2.
2. J2 CHECK THE PASSENGER SEAT MOTOR CIRCUITS FOR A SHORT TO GROUND Disconnect: Passenger Seat Control Switch C330. Using the following table, measure the resistance between passenger seat control switch C330 pins, harness side and ground: PINS CIRCUIT REFERENCE Pin Circuit Inoperative Motor 12 32-AH43 (WH/RD) Backrest 7 33-AH43 (YE/RD) Backrest 4 32-AH34 (WH/BK) Height 5 33-AH34 (YE/BK) Height 3 32-AH44 (WH/GN) Forward/ Rearward 11 33-AH44 (YE/GN) Forward/ Rearward Are the resistances greater than 10,000 ohms? Yes : GO to J3. No : REPAIR the circuit in question. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
3. J3 CHECK FOR AN OPEN CIRCUIT Key in OFF position. Measure the resistance between the passenger seat control switch C330 pins, harness side and the inoperative motor connector, harness side: PINS CIRCUIT REFERENCE C330 Pin Circuit Motor Connector Height Motor 4 32-AH34 (WH/BK) C333-1 5 33-AH34 (YE/BK) C333-2 Forward/Reverse Motor 3 32-AH44 (WH/GN) C332-2 11 33-AH44 (YE/GN) C332-1 Backrest Motor 12 32-AH43 (WH/RD) C338-1 7 33-AH43 (YE/RD) C338-2 Are all resistance readings less than 5 ohms? Yes : INSTALL a new passenger seat control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit in question. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

An inoperative memory seat can be caused by

1. a fuse.
2. wiring, terminals, or connectors.
3. a faulty seat control switch.
4. a faulty power seat track motor.
5. a faulty DSM.

An inoperative heated seat can be caused by

1. wiring, terminals, or connectors.
2. a faulty heated seat switch.
3. a faulty heated seat module.
4. a faulty heated seat element.
5. a faulty heated seat temperature sensor.

Scheme 133

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Scheme 139

Scheme 140

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Scheme 143

Scheme 144

Scheme 145

Scheme 146

Scheme 147

1. L1 CHECK THE HEATED SEAT SWITCH INPUT TO THE HEATED SEAT MODULE Key in OFF position. Disconnect: Left Rear Heated Seat Module C3162. Measure the resistance between left rear heated seat module C3162-8, circuit 8-HC21 (WH/GN), harness side and ground and between C3162-11, circuit 10-HC21 (GY/OG), harness side and ground while pressing the heated seat switch. Are the resistances less than 50 ohms when the heated seat switch is pressed and greater than 10,000 ohms when the heated seat switch is not pressed? Yes : GO to L3 . No : GO to L2.
2. L2 CHECK HEATED SEAT SWITCH GROUND CIRCUIT 31-HC15 (BK/YE) Disconnect: Left Rear Heated Seat Switch C722. Measure the resistance between left rear heated seat switch C722-1, circuit 31-HC15 (BK/YE), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new heated seat switch. TEST the system for normal operation. No : REPAIR circuit 31-HC15 (BK/YE). TEST the system for normal operation.
3. L3 CHECK CIRCUIT 30-HC21 (RD/GN) FOR VOLTAGE TO THE HEATED SEAT MODULE Measure the voltage between left rear heated seat module C3162-12, circuit 30-HC21 (RD/GN), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to L4. No : REPAIR circuit 30-HC21 (RD/GN). TEST the system for normal operation.
4. L4 CHECK CIRCUIT 20-HC21D (PK/BK) FOR VOLTAGE TO THE HEATED SEAT MODULE Key in ON position. Measure the voltage between left rear heated seat module C3162-5, circuit 20-HC21D (PK/BK), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to L5. No : REPAIR circuit 20-HC21D (PK/BK). TEST the system for normal operation.
5. L5 CHECK HEATED SEAT MODULE GROUND CIRCUIT 31-HC15 (BK/YE) Key in OFF position. Measure the resistance between left rear heated seat module C3162-1, circuit 31-HC15 (BK/YE), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to L6. No : REPAIR circuit 31-HC15 (BK/YE). TEST the system for normal operation.
6. L6 CHECK THE SEAT CUSHION HEATER AND THE SEAT BACK HEATER CIRCUITS Measure the resistance between the left rear heated seat module C3162-6, circuit 20-HC17 (PK), harness side and C3162-7, circuit 31S-HC16 (BK/BU), harness side; and between the left rear heated seat module C3162-6, circuit 20-HC17 (PK), harness side and ground. Is the resistance greater than 1.6 ohms and less than 10 ohms between C3162-6 and C3162-7 and greater than 10,000 ohms between C3162-6 and ground? Yes : GO to L7. No : GO to L12 .
7. L7 CHECK THE SEAT CUSHION HEATER AND THE SEAT BACK HEATER CIRCUITS FOR A SHORT TO VOLTAGE Key in ON position. Measure the voltage between the left rear heated seat module C3162-6, circuit 20-HC17 (PK), harness side and ground and between C3162-7, circuit 31S-HC16 (BK/BU), harness side and ground. Is voltage present on either circuit? Yes : REPAIR the circuit 20-HC17 (PK), 31S-HC16 (BK/BU) or 20S-HC16 (PK/BU). TEST the system for normal operation. No : GO to L8.
8. L8 CHECK THE HEATED SEAT TEMPERATURE SENSOR AND CIRCUITS FOR A SHORT TO VOLTAGE Measure the voltage between the left rear heated seat module C3162-3, circuit 9-HC23 (BN/YE), harness side and ground and between C3162-4, circuit 8-HC23 (WH/BK), harness side and ground. Is voltage present on either circuit? Yes : REPAIR the affected circuit. TEST the system for normal operation. No : GO to L9.
9. L9 CHECK THE HEATED SEAT TEMPERATURE SENSOR AND CIRCUITS Key in OFF position. Measure the resistance between the left rear heated seat module C3162-3, circuit 9-HC23 (BN/YE), harness side and C3162-4, circuit 8-HC23 (WH/BK), harness side; and between the left rear heated seat module C3162-3, circuit 9-HC23 (BN/YE), harness side and ground. Is the resistance less than 300,000 ohms and greater than 50 ohms between C3162-3 and C3162-4 and greater than 10,000 ohms between C3162-3 and ground? Yes : INSTALL a new left rear heated seat module. TEST the system for normal operation. No : GO to L10.
10. L10 CHECK CIRCUIT 9-HC23 (BN/YE) FOR AN OPEN OR SHORT TO GROUND Disconnect: Left Rear Seat Cushion Heater C3167. Measure the resistance between the left rear heated seat module C3162-3, circuit 9-HC23 (BN/YE), harness side and the left rear seat cushion heater C3167-3, circuit 9-HC23 (BN/YE), harness side; and between the left rear heated seat module C3162-3, circuit 9-HC23 (BN/YE), harness side and ground. Is the resistance less than 5 ohms between the heated seat module and the seat cushion heater and greater than 10,000 ohms between the heated seat module and ground? Yes : GO to L11. No : REPAIR circuit 9-HC23 (BN/YE). TEST the system for normal operation.
11. L11 CHECK CIRCUIT 8-HC23 (WH/BK) FOR AN OPEN OR SHORT TO GROUND Measure the resistance between the left rear heated seat module C3162-4, circuit 8-HC23 (WH/BK), harness side and the left rear seat cushion heater C3167-2, circuit 8-HC23 (WH/BK), harness side; and between the left rear heated seat module C3162-4, circuit 8-HC23 (WH/BK), harness side and ground. Is the resistance less than 5 ohms between the heated seat module and the seat cushion heater and greater than 10,000 ohms between the heated seat module and ground? Yes : INSTALL a new left rear seat cushion heater. TEST the system for normal operation. No : REPAIR circuit 8-HC23 (WH/BK). TEST the system for normal operation.
12. L12 CHECK CIRCUIT 32-HC17 (WH/BU) FOR OPEN OR SHORT TO GROUND Disconnect: Left Rear Seat Cushion Heater C3167. Measure the resistance between left rear heated seat module C3162-6, circuit 20S-HC17 (PK), harness side and left rear seat cushion heater C3167-1, circuit 20S-HC17 (PK), harness side; and between left rear heated seat module C3162-6, circuit 20S-HC17 (PK), harness side and ground. Is the resistance less than 1 ohm between the heated seat module and the seat cushion heater, and greater than 10,000 ohms between the heated seat module and ground? Yes : GO to L13. No : REPAIR circuit 20S-HC17 (PK).TEST the system for normal operation.
13. L13 CHECK CIRCUIT 31S-HC16 (BK/BU) FOR AN OPEN OR A SHORT TO GROUND Disconnect: Left Rear Seat Back Heater C3168. Measure the resistance between left rear heated seat module C3162-7, circuit 31S-HC16 (BK/BU), harness side and left rear seat back heater C3168-2, circuit 31S-HC16 (BK/BU), harness side; and between left rear heated seat module C3162-7, circuit 31S-HC16 (BK/BU), harness side and ground. Is the resistance less than 5 ohms between the heated seat module and the seat back heater, and greater than 10,000 ohms between the heated seat module and ground? Yes : GO to L14. No : REPAIR circuit 31S-HC16 (BK/BU). TEST the system for normal operation.
14. L14 CHECK CIRCUIT 20S-HC16 (PK/BU) FOR AN OPEN OR A SHORT TO GROUND Measure the resistance between left rear seat cushion heater C3167-4, circuit 20S-HC16 (PK/BU), harness side and left rear seat back heater C3168-1, circuit 20S-HC16 (PK/BU), harness side; and between left rear seat cushion heater C3167-4, circuit 20S-HC16 (PK/BU), harness side and ground. Is the resistance less than 5 ohms between the seat cushion heater and the seat back heater, and greater than 10,000 ohms between the seat cushion heater and ground? Yes : GO to L15. No : REPAIR circuit 20S-HC16 (PK/BU). TEST the system for normal operation.
15. L15 CHECK THE SEAT BACK HEATER Disconnect: Left Rear Seat Back Heater Connector. Measure the resistance between left rear seat back heater pin 1 and pin 2, seat back heater component side. Is the resistance between 0.6 and 0.9 ohm? Yes : INSTALL a new left rear seat cushion heater. TEST the system for normal operation. No : INSTALL a new left rear seat back heater. TEST the system for normal operation.

An inoperative heated seat can be caused by

1. wiring, terminals, or connectors.
2. a faulty heated seat switch.
3. a faulty heated seat module.
4. a faulty heated seat element.
5. a faulty heated seat temperature sensor.

Scheme 148

Scheme 149

Scheme 150

Scheme 151

Scheme 152

Scheme 153

Scheme 154

Scheme 155

Scheme 156

Scheme 157

Scheme 158

Scheme 159

Scheme 160

Scheme 161

Scheme 162

1. M1 CHECK THE HEATED SEAT SWITCH INPUT TO THE HEATED SEAT MODULE Key in OFF position. Disconnect: Right Rear Heated Seat Module C3163. Measure the resistance between right rear heated seat module C3163-8, circuit 8-HC21 (WH/GN), and C3163-11, circuit 10-HC21A (GY/OG), harness side and ground while pressing the heated seat switch. Are the resistances less than 5 ohms when the heated seat switch is pressed? Yes : GO to M3 . No : GO to M2.
2. M2 CHECK HEATED SEAT SWITCH GROUND CIRCUIT 31-HC21 (BK/GN) Disconnect: Right Rear Heated Seat Switch C822. Measure the resistance between right rear heated seat switch C822-1, circuit 31-HC21 (BK/GN), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new heated seat switch. TEST the system for normal operation. No : REPAIR circuit 31-HC21 (BK/GN). TEST the system for normal operation.
3. M3 CHECK CIRCUIT 30-HC21 (RD/GN) FOR VOLTAGE TO THE HEATED SEAT MODULE Measure the voltage between right rear heated seat module C3163-12, circuit 30-HC21 (RD/GN), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to M4. No : REPAIR circuit 30-HC21 (RD/GN). TEST the system for normal operation.
4. M4 CHECK CIRCUIT 20-HC21D (PK/BK) FOR VOLTAGE TO THE HEATED SEAT MODULE Key in ON position. Measure the voltage between right rear heated seat module C3163-5, circuit 20-HC21D (PK/BK), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to M5. No : REPAIR circuit 20-HC21D (PK/BK). TEST the system for normal operation.
5. M5 CHECK HEATED SEAT MODULE GROUND CIRCUIT 31-HC21 (BK/GN) Key in OFF position. Measure the resistance between right rear heated seat module C3163-1, circuit 31-HC21 (BK/GN), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to M6. No : REPAIR circuit 31-HC21 (BK/GN). TEST the system for normal operation.
6. M6 CHECK THE SEAT CUSHION HEATER AND THE SEAT BACK HEATER CIRCUITS Measure the resistance between the right rear heated seat module C3163-6, circuit 20-HC17 (PK), harness side and C3163-7, circuit 31S-HC16 (BK/BU), harness side; and between the right rear heated seat module C3163-6, circuit 20-HC17 (PK), harness side and ground. Is the resistance greater than 1.6 ohms and less than 10 ohms between C3163-6 and C3163-7 and greater than 10,000 ohms between C3163-6 and ground? Yes : GO to M7. No : GO to M12 .
7. M7 CHECK THE SEAT CUSHION HEATER AND THE SEAT BACK HEATER CIRCUITS FOR A SHORT TO VOLTAGE Key in ON position. Measure the voltage between the right rear heated seat module C3163-6, circuit 20-HC17 (PK), harness side and ground and between C3163-7, circuit 31S-HC16 (BK/BU), harness side and ground. Is voltage present on either circuit? Yes : REPAIR the circuit 20-HC17 (PK),31S-HC16 (BK/BU) or 20S-HC16 (PK/BU). TEST the system for normal operation. No : GO to M8.
8. M8 CHECK THE HEATED SEAT TEMPERATURE SENSOR AND CIRCUITS FOR A SHORT TO VOLTAGE Measure the voltage between the right rear heated seat module C3163-3, circuit 9-HC23 (BN/YE), harness side and ground and between C3163-4, circuit 8-HC23 (WH/BK), harness side and ground. Is voltage present on either circuit? Yes : REPAIR the affected circuit. TEST the system for normal operation. No : GO to M9.
9. M9 CHECK THE HEATED SEAT TEMPERATURE SENSOR AND CIRCUITS Key in OFF position. Measure the resistance between the right rear heated seat module C3163-3, circuit 9-HC23 (BN/YE), harness side and C3163-4, circuit 8-HC23 (WH/BK), harness side; and between the right rear heated seat module C3163-3, circuit 9-HC23 (BN/YE), harness side and ground. Is the resistance less than 300,000 ohms and greater than 50 ohms between C3163-3 and C3163-4 and greater than 10,000 ohms between C3163-3 and ground? Yes : INSTALL a new right rear heated seat module. TEST the system for normal operation. No : GO to M10.
10. M10 CHECK CIRCUIT 9-HC23 (BN/YE) FOR AN OPEN OR SHORT TO GROUND Disconnect: Right Rear Seat Cushion Heater C3169. Measure the resistance between the right rear heated seat module C3163-3, circuit 9-HC23 (BN/YE), harness side and the right rear seat cushion heater C3169-3, circuit 9-HC23 (BN/YE), harness side; and between the right rear heated seat module C3163-3, circuit 9-HC23 (BN/YE), harness side and ground. Is the resistance less than 5 ohms between the heated seat module and the seat cushion heater and greater than 10,000 ohms between the heated seat module and ground? Yes : GO to M11. No : REPAIR circuit 9-HC23 (BN/YE). TEST the system for normal operation.
11. M11 CHECK CIRCUIT 8-HC23 (WH/BK) FOR AN OPEN OR SHORT TO GROUND Measure the resistance between the right rear heated seat module C3163-4, circuit 8-HC23 (WH/BK), harness side and the right rear seat cushion heater C3169-2, circuit 8-HC23 (WH/BK), harness side; and between the right rear heated seat module C3163-4, circuit 8-HC23 (WH/BK), harness side and ground. Is the resistance less than 5 ohms between the heated seat module and the seat cushion heater and greater than 10,000 ohms between the heated seat module and ground? Yes : INSTALL a new right rear seat cushion heater. TEST the system for normal operation. No : REPAIR circuit 8-HC23 (WH/BK). TEST the system for normal operation.
12. M12 CHECK CIRCUIT 20-HC17 (PK) FOR OPEN OR SHORT TO GROUND Disconnect: Right Rear Seat Cushion Heater C3169. Measure the resistance between right rear heated seat module C3163-6, circuit 20-HC17 (PK), harness side and right rear seat cushion heater C3169-1, circuit 20-HC17 (PK), harness side; and between right rear heated seat module C3163-6, circuit 20-HC17 (PK), harness side and ground. Is the resistance less than 1 ohm between the heated seat module and the seat cushion heater, and greater than 10,000 ohms between the heated seat module and ground? Yes : GO to M13. No : REPAIR circuit 20-HC17 (PK).TEST the system for normal operation.
13. M13 CHECK CIRCUIT 31S-HC16 (BK/BU) FOR AN OPEN OR A SHORT TO GROUND Disconnect: Right Rear Seat Back Heater C3170. Measure the resistance between right rear heated seat module C3163-7, circuit 31S-HC16 (BK/BU), harness side and right rear seat back heater C3170-2, circuit 31S-HC16 (BK/BU), harness side; and between right rear heated seat module C3163-7, circuit 31S-HC16 (BK/BU), harness side and ground. Is the resistance less than 5 ohms between the heated seat module and the seat back heater, and greater than 10,000 ohms between the heated seat module and ground? Yes : GO to M14. No : REPAIR circuit 31S-HC16 (BK/BU). TEST the system for normal operation.
14. M14 CHECK CIRCUIT 20S-HC16 (PK/BU) FOR AN OPEN OR A SHORT TO GROUND Measure the resistance between right rear seat cushion heater C3169-4, circuit 20S-HC16 (PK/BU), harness side and right rear seat back heater C3170-1, circuit 20S-HC16 (PK/BU), harness side; and between right rear seat cushion heater C3169-4, circuit 20S-HC16 (PK/BU), harness side and ground. Is the resistance less than 5 ohms between the seat cushion heater and the seat back heater, and greater than 10,000 ohms between the seat cushion heater and ground? Yes : GO to M15. No : REPAIR circuit 20S-HC16 (PK/BU). TEST the system for normal operation.
15. M15 CHECK THE SEAT BACK HEATER Disconnect: Right Seat Back Heater Connector. Measure the resistance between right rear seat back heater pin 1 and pin 2, seat back heater component side. Is the resistance between 0.6 and 0.9 ohm? Yes : INSTALL a new right rear seat cushion heater. TEST the system for normal operation. No : INSTALL a new right rear seat back heater. TEST the system for normal operation.

A driver heated seat that does not operate in high can be caused by

1. wiring, terminals, or connectors.
2. a faulty heated seat switch.
3. a faulty heated seat module.

Scheme 163

Scheme 164

Scheme 165

1. N1 CHECK THE HEATED SEAT SWITCH INPUT TO THE HEATED SEAT MODULE Key in OFF position. Disconnect: Left Rear Heated Seat Module C3162. Measure the resistance between left rear heated seat module C3162-8, circuit 8-HC21 (WH/GN), harness side and ground while pressing the heated seat switch. Is the resistance less than 50 ohms when the heated seat switch is pressed and greater than 10,000 ohms when the heated seat switch is not pressed? Yes : INSTALL a new heated seat module. TEST the system for normal operation. No : GO to N2.
2. N2 CHECK CIRCUIT 8-HC21 (WH/GN) FOR OPEN OR SHORT TO GROUND Disconnect: Left Rear Heated Seat Switch C722. Measure the resistance between left rear heated seat switch C722-2, circuit 8-HC21 (WH/GN), harness side and left rear heated seat module C3162-8, circuit 8-HC21 (WH/GN), harness side; and between left rear heated seat switch C722-2, circuit 8-HC21 (WH/GN), harness side and ground. Is the resistance less than 1 ohm between the heated seat switch and the heated seat module and greater than 10,000 ohms between the heated seat switch and ground? Yes : GO to N3. No : REPAIR circuit 8-HC21 (WH/GN). TEST the system for normal operation.
3. N3 CHECK CIRCUIT 8-HC21 (WH/GN) FOR SHORT TO VOLTAGE Key in ON position. Measure the voltage between the left rear heated seat module C3162-8, circuit 8-HC21 (WH/GN), harness side and ground. Is voltage present? Yes : REPAIR circuit 8-HC21 (WH/GN). TEST the system for normal operation. No : INSTALL a new heated seat switch. TEST the system for normal operation.

A driver heated seat that does not operate in low can be caused by

1. wiring, terminals, or connectors.
2. a faulty heated seat switch.
3. a faulty heated seat module.

Scheme 166

Scheme 167

Scheme 168

1. O1 CHECK THE HEATED SEAT SWITCH INPUT TO THE HEATED SEAT MODULE Key in OFF position. Disconnect: Left Rear Heated Seat Module C3162. Measure the resistance between left rear heated seat module C3162-11, circuit 10-HC21 (GY/OG), harness side and ground while pressing the heated seat switch. Is the resistance less than 50 ohms when the heated seat switch is pressed and greater than 10,000 ohms when the heated seat switch is not pressed? Yes : INSTALL a new heated seat module. TEST the system for normal operation. No : GO to O2.
2. O2 CHECK CIRCUIT 10-HC21 (GY/OG) FOR OPEN OR SHORT TO GROUND Disconnect: Left Rear Heated Seat Switch C722. Measure the resistance between left rear heated seat switch C722-6, circuit 10-HC21 (GY/OG), harness side and left rear heated seat module C3162-11, circuit 10-HC21 (GY/OG), harness side; and between left rear heated seat switch C722-6, circuit 10-HC21 (GY/OG), harness side and ground. Is the resistance less than 1 ohm between the heated seat switch and the heated seat module and greater than 10,000 ohms between the heated seat switch and ground? Yes : GO to O3. No : REPAIR circuit 10-HC21 (GY/OG). TEST the system for normal operation.
3. O3 CHECK CIRCUIT 10-HC21 (GY/OG) FOR SHORT TO VOLTAGE Key in ON position. Measure the voltage between the left rear heated seat module C3162-11, circuit 10-HC21 (GY/OG), harness side and ground. Is voltage present? Yes : REPAIR circuit 10-HC21 (GY/OG). TEST the system for normal operation. No : INSTALL a new heated seat switch. TEST the system for normal operation.

A passenger heated seat that does not operate in high can be caused by

1. wiring, terminals, or connectors.
2. a faulty heated seat switch.
3. a faulty heated seat module.

Scheme 169

Scheme 170

Scheme 171

1. P1 CHECK THE HEATED SEAT SWITCH INPUT TO THE HEATED SEAT MODULE Key in OFF position. Disconnect: Right Rear Heated Seat Module C3163. Measure the resistance between right rear heated seat module C3163-8, circuit 8-HC21 (WH/GN), harness side and ground while pressing the heated seat switch. Is the resistance less than 50 ohms when the heated seat switch is pressed and greater than 10,000 ohms when the heated seat switch is not pressed? Yes : INSTALL a new heated seat module. TEST the system for normal operation. No : GO to P2.
2. P2 CHECK CIRCUIT 8-HC21 (WH/GN) FOR OPEN OR SHORT TO GROUND Disconnect: Right Rear Heated Seat Switch C822. Measure the resistance between right rear heated seat switch C822-2, circuit 8-HC21 (WH/GN), harness side and right rear heated seat module C3163-8, circuit 8-HC21 (WH/GN), harness side; and between right rear heated seat switch C822-2, circuit 8-HC21 (WH/GN), harness side and ground. Is the resistance less than 1 ohm between the heated seat switch and the heated seat module and greater than 10,000 ohms between the heated seat switch and ground? Yes : GO to P3. No : REPAIR circuit 8-HC21 (WH/GN). TEST the system for normal operation.
3. P3 CHECK CIRCUIT 8-HC21 (WH/GN) FOR SHORT TO VOLTAGE Key in ON position. Measure the voltage between the right rear heated seat module C3163-8, circuit 8-HC21 (WH/GN), harness side and ground. Is voltage present? Yes : REPAIR circuit 8-HC21 (WH/GN). TEST the system for normal operation. No : INSTALL a new heated seat switch. TEST the system for normal operation.

A passenger heated seat that does not operate in low can be caused by

1. wiring, terminals, or connectors.
2. a faulty heated seat switch.
3. a faulty heated seat module.

Scheme 172

Scheme 173

Scheme 174

1. Q1 CHECK THE HEATED SEAT SWITCH INPUT TO THE HEATED SEAT MODULE Key in OFF position. Disconnect: Right Rear Heated Seat Module C3163. Measure the resistance between right rear heated seat module C3163-11, circuit 10-HC21 (GY/OG), harness side and ground while pressing the heated seat switch. Is the resistance less than 50 ohms when the heated seat switch is pressed and greater than 10,000 ohms when the heated seat switch is not pressed? Yes : INSTALL a new heated seat module. TEST the system for normal operation. No : GO to Q2.
2. Q2 CHECK CIRCUIT 10-HC21 (GY/OG) FOR OPEN OR SHORT TO GROUND Disconnect: Right Rear Heated Seat Switch C822. Measure the resistance between right rear heated seat switch C822-6, circuit 10-HC21 (GY/OG), harness side and right rear heated seat module C3163-11, circuit 10-HC21 (GY/OG), harness side; and between right rear heated seat switch C822-6, circuit 10-HC21 (GY/OG), harness side and ground. Is the resistance less than 1 ohm between the heated seat switch and the heated seat module and greater than 10,000 ohms between the heated seat switch and ground? Yes : GO to Q3. No : REPAIR circuit 10-HC21 (GY/OG). TEST the system for normal operation.
3. Q3 CHECK CIRCUIT 10-HC21 (GY/OG) FOR SHORT TO VOLTAGE Key in ON position. Measure the voltage between the right rear heated seat module C3163-11, circuit 10-HC21 (GY/OG), harness side and ground. Is voltage present? Yes : REPAIR circuit 10-HC21 (GY/OG). TEST the system for normal operation. No : INSTALL a new heated seat switch. TEST the system for normal operation.

An inoperative driver power lumbar can be caused by

1. wiring, terminals, or connectors.
2. a faulty seat control switch.
3. a faulty power lumbar motor assembly.

Scheme 175

Scheme 176

Scheme 177

Scheme 178

Scheme 179

Scheme 180

1. R1 CHECK CIRCUIT 30-AH40 (RD/GN) FOR AN OPEN WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Driver Seat Side Air Bag Module C316. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Disconnect: Driver Seat Lumbar Control Switch C361. Measure the voltage between the driver seat lumbar control switch C361-5, circuit 30-AH40 (RD/GN), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to R2. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
2. R2 CHECK CIRCUIT 31-AH40 (BK/GN) FOR AN OPEN Measure the resistance between driver seat lumbar control switch C361 -3, circuit 31 -AH40 (BK/GN), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to R3. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
3. R3 CHECK THE DRIVER SEAT LUMBAR MOTOR Connect: Driver Seat Lumbar Control Switch C361. Disconnect: Driver Seat Lumbar Motor C366. Measure the voltage between driver seat lumbar motor C366-2, circuit 32-AH39 (WH/BU), harness side and driver seat lumbar motor C366-1, circuit 33-AH39 (YE/BU), harness side. Operate the driver seat lumbar control switch in both directions. Is the voltage greater than 10 volts? Yes : INSTALL a new driver seat lumbar motor. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to R4.
4. R4 CHECK CIRCUIT 32-AH39 (WH/BU) AND 33-AH39 (YE/BU) FOR A SHORT TO GROUND Key in OFF position. Disconnect: Driver Seat Lumbar Control Switch C361. Measure the resistance between driver seat lumbar control switch C361 - 1, circuit 32 -AH39 (WH/BU), harness side and ground; and between driver seat lumbar control switch C361 -4, circuit 33-AH39 (YE/BU), harness side and ground. Are the resistances greater than 10,000 ohms? Yes : GO to R5. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
5. R5 CHECK CIRCUIT 32-AH39 (WH/BU) FOR AN OPEN Measure the resistance between driver seat lumbar control switch C361 - 1, circuit 32 -AH39 (WH/BU), harness side and driver seat lumbar motor C366-2, circuit 32-AH39 (WH/BU), harness side. Is the resistance less than 5 ohms? Yes : GO to R6. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
6. R6 CHECK CIRCUIT 33-AH39 (YE/BU) FOR AN OPEN Measure the resistance between driver seat lumbar control switch C361 -4, circuit 33 -AH39 (YE/BU), harness side and driver seat lumbar motor C366- 1, circuit 33-AH39 (YE/BU), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new driver seat lumbar control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

An inoperative passenger power lumbar can be caused by

1. wiring, terminals, or connectors.
2. a faulty seat control switch.
3. a faulty power lumbar motor assembly.

Scheme 181

Scheme 182

Scheme 183

Scheme 184

Scheme 185

Scheme 186

1. S1 CHECK CIRCUIT 30-AH46 (RD) FOR AN OPEN WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Passenger Seat Side Air Bag Module C314. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Passenger Seat Side Air Bag Module C314. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Disconnect: Passenger Seat Lumbar Control Switch C331. Key in ON position. Measure the voltage between the passenger seat lumbar control switch C331-5, circuit 30-AH46 (RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to S2. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
2. S2 CHECK CIRCUIT 31-AH46 (BK) FOR AN OPEN Key in OFF position. Measure the resistance between passenger seat lumbar control switch C331 -3, circuit 31 -AH46 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to S3. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
3. S3 CHECK THE PASSENGER SEAT LUMBAR MOTOR Connect: Passenger Seat Lumbar Control Switch C331. Disconnect: Passenger Seat Lumbar Motor C336. Measure the voltage between passenger seat lumbar motor C336-2, circuit 32-AH23 (WH/BU), harness side and passenger seat lumbar motor C336-1, circuit 33-AH23 (YE/BU), harness side. Operate the passenger seat lumbar control switch in both directions. Is the voltage greater than 10 volts? Yes : INSTALL a new driver seat lumbar motor. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to S4.
4. S4 CHECK CIRCUIT 32-AH45 (WH/BU) AND 33-AH45 (YE/BU) FOR A SHORT TO GROUND Key in OFF position. Disconnect: Passenger Seat Lumbar Control Switch C331. Measure the resistance between passenger seat lumbar control switch C331 -1, circuit 32 -AH45 (WH/BU), harness side and ground; and between passenger seat lumbar control switch C331 -4, circuit 33-AH45 (YE/BU), harness side and ground. Are the resistances greater than 10,000 ohms? Yes : GO to S5. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
5. S5 CHECK CIRCUIT 32-AH45 (WH/BU) FOR AN OPEN Measure the resistance between passenger seat lumbar control switch C331 - 1, circuit 32-AH45 (WH/BU), harness side and passenger seat lumbar motor C336-2, circuit 32-AH45 (WH/BU), harness side. Is the resistance less than 5 ohms? Yes : GO to S6. No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
6. S6 CHECK CIRCUIT 33-AH45 (YE/BU) FOR AN OPEN Measure the resistance between passenger seat lumbar control switch C331 -4, circuit 33-AH45 (YE/BU), harness side and passenger seat lumbar motor C336- 1, circuit 33-AH45 (YE/BU), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new passenger seat lumbar control switch. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the circuit. TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from passenger seat side air bag module C314. CONNECT passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

DTC B1676 battery pack voltage out of range can be caused by

1. a faulty DSM.

Scheme 187

1. T1 CHECK FOR VOLTAGE AT THE DSM WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Driver Seat Side Air Bag Module C316. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Disconnect: DSM C341b. Key in ON position. Measure the voltage between DSM C341b-4, circuit 30-AH80 (RD), harness side and ground. Is the voltage between 11.5 and 16 volts? Yes : CLEAR the DTC. REPEAT the DSM self-test. If DTC B1676 is retrieved, INSTALL a new DSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . TEST the system for normal operation. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316. CONNECT driver seat side air bag module C316. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) for battery and charging system repair.

1. wiring, terminals, or connectors.
2. CCSM.
3. climate controlled seat blower fan.

Scheme 188

Scheme 189

Scheme 190

Scheme 191

Scheme 192

Scheme 193

Scheme 194

Scheme 195

Scheme 196

Scheme 197

1. U1 CHECK CIRCUIT 30-HC21 (RD/GN) OR CIRCUIT 30-HC22 (RD/YE) WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Driver Seat Side Air Bag Module C316 or Passenger Seat Side Air Bag Module C314. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316 or Passenger Seat Side Air Bag Module C314. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Disconnect: Driver CCSM C3031a or Passenger CCSM C3036a. Key in ON position. Measure the voltage between driver CCSM C3031a-4, circuit 30-HC21 (RD/GN), harness side and ground or passenger CCSM C3036a-4, circuit 30-HC22 (RD/YE), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to U2. No : REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
2. U2 CHECK THE FAN MOTOR RPM INPUT Key in OFF position. Connect: Driver CCSM C3031a or Passenger CCSM C3036a. Key in ON position. Enter the following diagnostic mode on the diagnostic tool: CCSM Active Command Menu TURN BLOWER FULL POWER. NOTE: After the active command FULL BLOW is commanded to the ON state, the climate controlled seat blower fan will operate for 15 seconds then turn off. NOTE: The CCSM is not the source of the fault if the active command mode is operational. Monitor the PID BLWRRPM while commanding the FULL BLOW active command ON then OFF. Does the PID value change when the climate controlled seat blower fan was commanded ON and OFF? Yes : CHECK for causes of the intermittent fault. INSPECT the connectors, terminals and wiring. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition key frequently. REPAIR any intermittent concerns found. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to U3.
3. U3 VERIFY THE CLIMATE CONTROLLED SEAT BLOWER FAN OPERATION NOTE: After the active command FULL BLOW is commanded to the ON state, the climate controlled seat blower fan will operate for 15 seconds then turn off. NOTE: The CCSM is not the source of the fault if the active command mode is operational. Command the FULL BLOW active command ON then OFF and note the climate controlled seat blower fan operation. Does the climate controlled seat blower fan operate? Yes : GO to U4. No : GO to U8 .
4. U4 CHECK CIRCUIT 10-FA18 (GY/BK) AND CIRCUIT 20S-FA18 (PK/OG) FOR A SHORT TO VOLTAGE Key in OFF position. Disconnect: Driver CCSM C3031b or Passenger CCSM C3036b. Disconnect: Driver Climate Controlled Seat Blower Fan C3033 or Passenger Climate Controlled Seat Blower Fan C3038. Key in ON position. Measure the voltage between driver CCSM C3031b-10 (or passenger CCSM C3036b-10), circuit 20S-FA18 (PK/OG), harness side and ground; and between driver CCSM C3031b-14 (or passenger CCSM C3036b-14), circuit 10-FA18 (GY/BK), harness side and ground. Are the voltages less than 0.2 volt? Yes : GO to U5. No : REPAIR the affected circuits. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
5. U5 CHECK CIRCUIT 10-FA18 (GY/BK) AND CIRCUIT 20S-FA18 (PK/OG) FOR SHORT TO GROUND Key in OFF position. Measure the resistance between driver CCSM C3031b-10 (or passenger CCSM C3036b-10), circuit 20S-FA18 (PK/OG), harness side and ground; and between driver CCSM C3031b-14 (or passenger CCSM C3036b-14), circuit 10-FA18 (GY/BK), harness side and ground. Are the resistances greater than 10,000 ohms? Yes : GO to U6. No : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
6. U6 CHECK CIRCUIT 10-FA18 (GY/BK) AND CIRCUIT 20S-FA18 (PK/OG) FOR AN OPEN Measure the resistance between driver CCSM C3031b-10 (or passenger CCSM C3036b-10), circuit 20S-FA18 (PK/OG), harness side and driver climate controlled seat blower fan C3033-1 (or passenger climate controlled seat blower fan C3038-1), circuit 20S-FA18 (PK/OG), harness side; and between driver CCSM C3031b-14 (or passenger CCSM C3036b-14), circuit 10-FA18 (GY/BK), harness side and driver climate controlled seat blower fan C3033-2 (or passenger climate controlled seat blower fan C3038-2), circuit 10-FA18 (GY/BK), harness side. Are the resistances less than 5 ohms? Yes : GO to U7. No : REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
7. U7 CHECK THE CLIMATE CONTROLLED SEAT BLOWER FAN OUTPUT Connect: Driver Climate Controlled Seat Blower Fan C3033 or Passenger Climate Controlled Seat Blower Fan C3038. Connect fused (5A) jumper leads between driver CCSM C3031a (or passenger CCSM C3036a) as follows: Driver CCSM C3031 b-10 (or passenger CCSM C3036b-10), circuit 20S-FA18 (PK/OG), harness side and battery positive. Driver CCSM C3031b-13 (or passenger CCSM C3036b-13), circuit 8-FA18 (WH/BK), harness side and battery positive. Driver CCSM C3031b-3 (or passenger CCSM C3036b-3), circuit 31S -FA18 (BK/RD), harness side and ground. Measure the voltage between driver CCSM C3031b-14 (or passenger CCSM C3036b-14), circuit 10-FA18 (GY/BK), harness side and ground. Is voltage present? Yes : INSTALL a new CCSM. CONFIGURE the CCSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : INSTALL a new climate controlled seat blower fan. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
8. U8 CHECK CIRCUIT 31S-FA18 (BK/RD) AND CIRCUIT 8-FA18 (WH/BK) FOR A SHORT TO VOLTAGE Key in OFF position. Disconnect: Driver CCSM C3031b or Passenger CCSM C3036b. Disconnect: Driver Climate Controlled Seat Blower Fan C3033 or Passenger Climate Controlled Seat Blower Fan C3038. Key in ON position. Measure the voltage between driver CCSM C3031b-3 (or passenger CCSM C3036b-3), circuit 31S -FA18 (BK/RD), harness side and ground; and between driver CCSM C3031b-13 (or passenger CCSM C3036b-13), circuit 8-FA18 (WH/BK), harness side and ground. Are the voltages less than 0.2 volt? Yes : GO to U9. No : REPAIR the affected circuits. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
9. U9 CHECK CIRCUIT 31S-FA18 (BK/RD) AND CIRCUIT 8-FA18 (WH/BK) FOR A SHORT TO GROUND Key in OFF position. Measure the resistance between driver CCSM C3031b-3 (or passenger CCSM C3036b-3), circuit 31S -FA18 (BK/RD), harness side and ground; and between driver CCSM C3031b-13 (or passenger CCSM C3036b-13), circuit 8-FA18 (WH/BK), harness side and ground. Are the resistances greater than 10,000 ohms? Yes : GO to U10. No : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
10. U10 CHECK CIRCUIT 31S-FA18 (BK/RD) AND CIRCUIT 8-FA18 (WH/BK) FOR AN OPEN Measure the resistance between driver CCSM C3031b-3 (or passenger CCSM C3036b-3), circuit 31S -FA18 (BK/RD), harness side and driver climate controlled seat blower fan C3033-4 (or passenger climate controlled seat blower fan C3038-4), circuit 31S-FA18 (RD/BK), harness side; and between driver CCSM C3031b-13 (or passenger CCSM C3036b-13), circuit 8-FA18 (WH/BK), harness side and driver climate controlled seat blower fan C3033-3 (or passenger climate controlled seat blower fan C3038-3), circuit 8 -FA18 (WH/BK), harness side. Are the resistances less than 5 ohms? Yes : GO to U11. No : REPAIR the affected circuit. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
11. U11 CHECK THE CLIMATE CONTROLLED BLOWER FAN OPERATION Connect: Driver Climate Controlled Seat Blower Fan C3033 or Passenger Climate Controlled Seat Blower Fan C3038. Connect fused (5A) jumper leads between driver CCSM C3031b (or passenger CCSM C3036b) as follows: Driver CCSM C3031b-10 (or passenger CCSM C3036b-10), circuit 20S-FA18 (PK/OG), harness side and battery positive. Driver CCSM C3031b-13 (or passenger CCSM C3036b-13), circuit 8-FA18 (WH/BK), harness side and battery positive. Driver CCSM C3031b-3 (or passenger CCSM C3036b-3), circuit 31S -FA18 (BK/RD), harness side and ground. Does the climate controlled seat blower fan operate? Yes : INSTALL a new CCSM. CONFIGURE the CCSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : INSTALL a new climate controlled seat blower fan. CLEAR the DTCs. REPEAT the self test. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

An over-temp or differential temperature fault can be caused by

1. wiring, terminals, or connectors.
2. damaged, restricted, or disconnected air ducts.
3. worn, damaged, or incorrectly installed climate controlled seat cushion duct, cushion foam, or seat cushion trim cover.
4. a restricted seat fan motor filter.
5. airflow leaks.
6. collapsed airflow channels in the seat cushion foam.
7. incorrect installation of a TED.
8. TED.
9. CCSM.

An over-temp or differential temperature fault can be caused by

1. wiring, terminals, or connectors.
2. damaged, restricted, or disconnected air ducts.
3. worn, damaged, or incorrectly installed climate controlled seat cushion duct, cushion foam, or seat cushion trim cover.
4. a restricted seat fan motor filter.
5. airflow leaks.
6. collapsed airflow channels in the seat cushion foam.
7. incorrect installation of a TED.
8. TED.
9. CCSM.

A climate controlled seat that does not operate or does not operate correctly can be caused by

1. wiring, terminals, or connectors.
2. UBP network communication fault.
3. DATC module.
4. CCSM.

Scheme 198

Scheme 199

Scheme 200

Scheme 201

1. X1 CHECK FOR CCSM DTCS WARNING: The restraint system diagnostic tool is for restraint system service only. Remove from vehicle prior to road use. Failure to remove could result in injury and possible violation of vehicle safety standards. NOTE: If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the air bag system must be depowered. Refer to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . NOTE: The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault. NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer. Key in OFF position. Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . Disconnect: Driver Seat Side Air Bag Module C316 or Passenger Seat Side Air Bag Module C314. Connect: Restraint System Diagnostic Tool 418-133 or 501-097 to Driver Seat Side Air Bag Module C316 or Passenger Seat Side Air Bag Module C314. Connect: Battery Ground Cable. WARNING: Be sure that nobody is in the vehicle and that there is nothing blocking or set in front of any air bag module when the battery ground cable is connected. Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test. Were any DTCs retrieved? Yes : GO to the Climate Controlled Seat Module (CCSM) Diagnostic Trouble Code (DTC) Index. No : If the scan tool communicates with the CCSM, GO to X2. If the scan tool does not communicate with the CCSM, GO to X3 .
2. X2 CHECK FOR DATC MODULE DTCS Enter the following diagnostic mode on the diagnostic tool: On-Demand Self Test. Were any DTCs retrieved? Yes : GO to «ENGINE COOLING»(ref-207554) . No : If the scan tool communicates with the DATC module, GO to X5 . If the scan tool does not communicate with the DATC module, GO to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) to diagnose the module communications network concern. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
3. X3 CHECK CIRCUIT 31-HC21 (BK/GN) OR CIRCUIT 31-HC22 (BK/YE) Key in OFF position. Disconnect: Driver CCSM C3031 a or Passenger CCSM C3036a. For a driver seat, measure the resistance between the driver CCSM C3031 a-3, circuit 31-HC21 (BK/GN), harness side and ground. NOTE: Passenger CCSM C3036b-9, circuit 31-HC22D (BK/YE) is used to identify the CCSM as the passenger side module. If a fault is present on circuit 31-HC22D (BK/YE), the passenger CCSM may operate when the driver CCSM operation is requested by the DATC module settings. For a passenger seat, measure the resistance between the passenger CCSM C3036a-3, circuit 31-HC22 (BK/YE), harness side and ground; and between the passenger CCSM C3036b-9, circuit 31-HC22D (BK/YE), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to X4. No : REPAIR the affected circuit. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
4. X4 CHECK THE CCSM VOLTAGE Key in ON position. For driver CCSM, measure the voltage between the driver CCSM C3031 a-2, circuit 20-HC21 (PK/BK), harness side and ground; and between the driver CCSM C3031a-4, circuit 30-HC21 (RD/GN), harness side and ground. For passenger CCSM, measure the voltage between the passenger CCSM C3036a-2, circuit 20S-HC22 (PK/YE), harness side and ground; and between the passenger CCSM C3036a-4, circuit 30-HC22 (RD/YE), harness side and ground. Are the voltages greater than 10 volts? Yes : GO to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) to diagnose the module communications network concern. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : REPAIR the affected circuit. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
5. X5 CHECK THE DATC MODULE-TO-CCSM COMMUNICATION Key in OFF position. Connect: Driver CCSM C3031 a or Passenger CCSM C3036a. Key in ON position. Enter the following diagnostic mode on the diagnostic tool: CCSM PID DATC STATE ENCODED SEAT MODE. Monitor the CCSM PID DATC STATE ENCODED SEAT MODE with the DATC module placed in the following climate controlled seat settings: high heat (press HEAT button, three LEDs illuminated). medium heat (press HEAT button, two LEDs illuminated). low heat (press HEAT button, one LED illuminated). high cool (press COOL button, three LEDs illuminated). medium cool (press COOL button, two LEDs illuminated). low cool (press COOL button, one LED illuminated). AUTO mode (press COOL and HEAT buttons simultaneously, center LED only illuminated). Does the CCSM PID match the DATC module setting? Yes : The climate controlled seat system is operating correctly. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : GO to X6.
6. X6 CHECK THE CCSM Enter the following diagnostic mode on the diagnostic tool: CCSM Active Command THERMAL ELECTRIC DEVICE HEAT MODE. Enter the following diagnostic mode on the diagnostic tool: CCSM PID DATC STATE ENCODED SEAT MODE. NOTE: After the active command THERMAL ELECTRIC DEVICE HEAT MODE is commanded to the ON state, the TED will operate for 15 seconds then turn off. NOTE: The CCSM is not the source of the fault if the active command mode is operational. Monitor the CCSM PID DATC STATE ENCODED SEAT MODE while commanding the THERMAL ELECTRIC DEVICE HEAT MODE active command ON then OFF. Does the CCSM go into HEAT mode? Yes : INSTALL a new DATC module. TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) . No : INSTALL a new CCSM. CONFIGURE the CCSM. REFER to «MODULE COMMUNICATIONS NETWORK - LS»(ref-207567) . TEST the system for normal operation. TURN the ignition OFF. DISCONNECT the battery ground cable. DISCONNECT the restraint system diagnostic tool from driver seat side air bag module C316 or passenger seat side air bag module C314. CONNECT driver seat side air bag module C316 or passenger seat side air bag module C314. REPOWER the supplemental restraint system (SRS). REFER to «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .

Driver Seat

Note. If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the supplemental restraint system (SRS) must be depowered.

Note. If a side air bag deployment took place, the seatback pad, trim cover and side air bag module must be replaced. The seatback frame should be replaced if necessary.

Note. The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.

Note. The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Note. Driver seat is shown, passenger seat is similar.

Scheme 202

1. Move the seat fully rearward.
2. Remove the parts in the order listed in the following illustration and table.
3. To install, reverse the removal procedure.
4. Check the active restraint system for correct operation. For additional information, refer to «SAFETY BELT SYSTEM»(ref-207574) .

Item 4: Front Seat Track-to-Floor Front Fasteners Removal Note

1. Remove the front seat fasteners and discard.

Item 5: Front Seat Track-to-Floor Rear Fasteners Removal Note

Scheme 203

1. Move the seat to the most forward position.
2. Depower the SRS. For additional information, refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
3. Remove the two seat track-to-floor covers.
4. Remove the track-to-floor fasteners and discard.

Item 5: Front Seat Track-to-Floor Rear Fasteners Installation Note

1. Install a new bolt and washer assembly W503942-S424.
2. Repower the SRS. For additional information, refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures portion of «AIR BAG RESTRAINT SYSTEMS»(ref-170294) .
3. Move the seat fully forward.

Item 4: Front Seat Track-to-Floor Front Fasteners Installation Note

1. Install a new bolt and washer assembly W503942-S424.

Rear Seat

Item 1: Rear Seat Cushion Mini-Buckle Removal Note

Scheme 204

1. Using a suitable tool, release the mini-buckle.

Item 2: Cushion Release Levers Removal Note

Scheme 205

1. Release the two levers located at the lower outboard edges of the seat cushion, lift the cushion up and pull the cushion out.

Item 3: Rear Seat Cushion Removal Note

1. Disconnect the heated seat electrical connectors at both outboard sides of the seat cushion (if equipped).

Scheme 206

Item 5: Left Side Bolster Release Lever Removal Note

Scheme 207

1. Pull down the lever to release the LH latch. Remove the left bolster.

Item 7: 60 Percent Seat Backrest Fasteners Removal Note

1. Remove the rear seat backrest fasteners and discard.

Item 8: 60 Percent Seat Backrest Removal Note>

1. From the luggage compartment, release the seat backrest.

Item 10: Right Side Bolster Release Lever Removal Note

Scheme 208

1. Push up the lever to release the RH latch (left side shown). Remove the right bolster.

Item 12: 40 Percent Seat Backrest Fasteners Removal Note

1. Remove the rear seat backrest fasteners and discard.

Item 13: 40 Percent Seat Backrest Removal Note

1. From the luggage compartment, release the seat backrest.

Item 12: 40 Percent Seat Backrest Fasteners Installation Note

1. Install a new bolt and washer assembly W503942-S424.

Item 7: 60 Percent Seat Backrest Fasteners Installation Note

1. Install a new bolt and washer assembly W503942-S424.

Heated Seat Switch - Rear

Note. Left side is shown, right side is similar.

Scheme 209

1. Remove the parts in the order listed in the following illustrations and table.
2. To install, reverse the removal procedure.

Front Seat Cushion - Driver

Note. If a side air bag deployment took place, the seatback pad, trim cover and side air bag module must be replaced. The seatback frame should be replaced if necessary.

Note. If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the supplemental restraint system (SRS) must be depowered.

Note. The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.

Note. The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Item 8: Side Shield Screw Disassembly Note

1. Remove the screw from behind the bezel.

Scheme 210

Item 18: Manual Lumbar Adjuster Disassembly Note

Scheme 211

Scheme 212

1. Release the manual lumbar adjustment screw. From inside the lumbar adjustment mechanism, push the screw stop in toward the center. While pushing the screw stop toward the center, rotate the lumbar adjustment mechanism counterclockwise. The screw stop will pass clear of the internal stop, releasing the manual lumbar adjustment screw.
2. Remove the manual lumbar cable. Continue turning the manual lumbar mechanism counterclockwise until the cable support comes out. Push the screw out enough to remove the cable end.
3. Route the manual lumbar adjuster cable out from the seat cushion frame.

Item 19: Power Seat Track Nut Disassembly Note

Scheme 213

1. Remove the seat track and the nuts. Detach the wire harness retainer from the seat track-to-cushion stud. Remove the four seat track-to-cushion nuts (three shown). Remove the seat track.

Item 25: Connector Disassembly Note

Scheme 214

1. Separate the connectors from the seat cushion frame.

Item 33: Climate Controlled Seat Cushion Duct Assembly Note

Note. Some vehicles may exhibit a condition where one or both climate controlled seats turn OFF shortly after initialization with CCSM DTC(s) present. If this condition exists, a climate controlled seat modification may be required. Inspect the climate controlled seat for airflow restrictions due to seat cushion crush or seat cushion duct damage. Repair the climate controlled seat duct and lower ventilation air blower assembly as indicated in this procedure.

1. Install the climate controlled seat cushion duct to the cushion foam pad.

Item 26: Lower Ventilation Air Blower Assembly Assembly Note

Note. Some vehicles may exhibit a condition where one or both climate controlled seats turn OFF shortly after initialization with CCSM DTC(s) present. If this condition exists, a climate controlled seat modification may be required. Inspect the climate controlled seat for airflow restrictions due to seat cushion crush or seat cushion duct damage. Repair the climate controlled seat cushion duct and lower ventilation air blower assembly as indicated in this procedure.

Scheme 215

1. If equipped with the style TED shown and the climate controlled seat cushion duct is damaged or restricted causing climate controlled seat module (CCSM) DTC(s) to be set, carry out the following steps. Scribe a line 6.35 mm (1/4 in) below the top of the TED riser (part of the lower ventilation air blower assembly)(19N550) as shown. Cover the TED openings and seal the area of the TED below the scribed line with a shop towel or appropriate material to prevent any cuttings, filings or foreign material from entering into the TED. Using an appropriate tool, carefully cut off the top of the TED riser where scribed and discard. Remove any remaining edge burs and any debris from the TED and lower ventilation air blower assembly before removing the shop toweling or coverings. Check for and remove any remaining debris in the TED and lower ventilation air blower assembly before installing to the seat cushion duct.
2. Install the lower ventilation air blower assembly to the seat cushion pan.

Front Seat Cushion - Passenger

Note. The occupant classification sensor is found only on the front passenger seat and is not equipped on all vehicles. A white tag having the letters "OCS" (occupant classification sensor) will appear under the front of the passenger seat to identify a seat equipped with an occupant classification sensor.

Note. If a side air bag deployment took place, the seatback pad, trim cover and side air bag module must be replaced. The seatback frame should be replaced if necessary.

Note. If a seat equipped with a supplemental restraint system (SRS) component is being serviced, the SRS must be depowered.

Note. The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.

Note. The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Item 8: Side Shield Screw Disassembly Note

1. Remove the screw from behind the bezel.

Scheme 216

Item 18: Manual Lumbar Adjuster Disassembly Note

Scheme 217

Scheme 218

1. Release the manual lumbar adjustment screw. From inside the lumbar adjustment mechanism, push the screw stop in toward the center. While pushing the screw stop toward the center, rotate the lumbar adjustment mechanism counterclockwise. The screw stop will pass clear of the internal stop, releasing the manual lumbar adjustment screw.
2. Remove the manual lumbar cable. Continue turning the manual lumbar mechanism counterclockwise until the cable support comes out. Push the screw out enough to remove the cable end.
3. Route the manual lumbar adjuster cable out from the seat cushion frame.

Item 19: Power Seat Track Nut Disassembly Note

Scheme 219

1. Remove the seat track and the nuts. Detach the wire harness retainer from the seat track-to-cushion stud. Remove the four seat track-to-cushion nuts (three shown). Remove the seat track.

Item 24: Connector Disassembly Note

Scheme 220

1. Separate the connectors from the seat cushion frame.

Item 30: Seat Cushion Trim Cover Disassembly Note

Scheme 221

1. Remove the seat cushion frame, trim cover, foam pad and occupant classification sensor as an assembly.
2. Separate the seat cushion trim cover retainers. Vehicles with an original equipment occupant classification sensor, remove the seat cushion trim cover retainers and separate the seat cushion pad and trim cover from the seat cushion frame. Vehicles with a service part occupant classification sensor, remove the seat cushion trim cover retainers from the seat cushion frame.

Item 32: Occupant Classification Sensor Disassembly Note

Scheme 222

Scheme 223

Scheme 224

Scheme 225

1. Vehicles equipped with an original equipment occupant classification sensor (OCS), remove the pin-type retainers.
2. Vehicles equipped with OCS, release the pressure sensor retainer. Vehicles with an original equipment occupant classification sensor, fold the bladder away and pry up, releasing the pressure sensor retainer. Vehicles with a service part occupant classification sensor, fold the seat cushion pad and bladder away and pry up, releasing the pressure sensor retainer.
3. Remove the climate control components. Remove the screws. Separate the wire harness from the seat cushion pan. Separate the climate control duct and remove the assembly.
4. If equipped, remove the occupant classification sensor (OCS). Remove the screws. Separate the pressure sensor. Separate the wire harness from the seat cushion pan. Route the OCS components back through the seat cushion pan and remove the assembly.
5. Separate the trim cover from the seat cushion pad.

Item 32: Occupant Classification Sensor Assembly Note

Scheme 226

Scheme 227

Scheme 228

1. Vehicles equipped with OCS, bend the pressure sensor retaining tab back.
2. If equipped, install the OCS. Feed the OCS components back through the cushion pan opening. Position the electronic control unit and install the screws. Route the wire harness and install the pin-type retainers. Install the pressure sensor onto the bracket.
3. Install the climate control component. Position the climate control component into the duct and tie strap it in place. Install the screws. Route the wire harness and install the pin-type retainer to the seat cushion pan.
4. Vehicles having the original occupant classification sensor installed, position the bladder and install the pin-type retainers.
5. Install the cushion trim cover to the cushion foam pad.
6. Attach the seat cushion trim cover retainers to the seat cushion frame. Vehicles having a service part occupant classification sensor installed, position the seat cushion trim cover with foam pad and OCS bladder to the seat cushion frame and attach the trim cover to the frame. Vehicles having the original occupant classification sensor installed, position the seat cushion trim cover with foam pad to the seat cushion frame and attach the trim cover to the frame.

Item 31: Climate Controlled Seat Cushion Duct Assembly Note

Note. Some vehicles may exhibit a condition where one or both climate controlled seats turn OFF shortly after initialization with CCSM DTC(s) present. If this condition exists, a climate controlled seat modification may be required. Inspect the climate controlled seat for airflow restrictions due to seat cushion crush or seat cushion duct damage. Repair the climate controlled seat cushion duct and lower ventilation air blower assembly as indicated in this procedure.

1. Install the climate controlled seat cushion duct to the cushion foam pad.

Item 26: Lower Ventilation Air Blower Assembly Assembly Note

Note. Some vehicles may exhibit a condition where one or both climate controlled seats turn OFF shortly after initialization with CCSM DTC(s) present. If this condition exists, a climate controlled seat modification may be required. Inspect the climate controlled seat for airflow restrictions due to seat cushion crush or seat cushion duct damage. Repair the climate controlled seat cushion duct and lower ventilation air blower assembly as indicated in this procedure.

Scheme 229

1. Install the lower ventilation air blower assembly to the seat cushion pan. If equipped with a duct extension attached to the TED (as shown) and the climate controlled seat cushion duct is damaged or restricted, remove the riser extension and screw and discard. Do not install a new riser extension. Install the lower ventilation air blower assembly to the seat cushion pan.

Rear Seat Cushion

Item 5: Cushion Trim Cover Disassembly Note

1. Remove all the outer seat cushion trim cover hog rings.
2. Separate the hook and loop fasteners.
3. Remove all the inner seat cushion trim cover hog rings.
4. Remove the seat cushion trim cover.

Front Seat Backrest

Note. If a side air bag deployment took place, the seatback pad, trim cover and side air bag module must be replaced. The seatback frame should be replaced if necessary.

Note. If a seat equipped with a seat mounted side air bag and/or a safety belt pretensioner (if equipped) system is being serviced, the supplemental restraint system (SRS) must be depowered.

Note. The air bag warning lamp illuminates when the RCM fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.

Note. The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

Note. The driver seat is shown, the passenger seat is similar.

Note. A seat side air bag module is shown, a seat side thorax air bag module is similar. For additional information, refer to the Description and Operation portion of AIR BAG RESTRAINT SYSTEMS .

Item 1: Backrest Trim Panel Disassembly Note

Scheme 230

1. Remove the seat back trim panel. Holding the panel at bottom center, pull rearward (not up) until both lower attachments are disengaged. While pushing in at the top of the panel, slide the panel down to disengage the upper J-hooks. Remove the panel. Inspect the lower panel attachments. If either pin-type retainer remained in the seat frame, install a new panel. Inspect the upper panel attachments. If either J-hook is cracked or damaged, install a new panel. Before installing the panel, install new pin-type retainers.

Item 6: Head Restraint Sleeves Disassembly Note

1. Pinch the end of the head restraint sleeves and remove.

Scheme 231

Item 7: Backrest Trim Cover Disassembly Note

Scheme 232

1. Remove and discard the hog rings. Remove backrest trim cover from the foam pad.

Item 14: Seat Side Air Bag or Thorax Side Air Bag Nuts Disassembly Note

1. If installing a new seat side air bag module or thorax side air bag module, use new retaining nuts. If the same seat side air bag module or thorax side air bag module is to be reused then reuse the seat side air bag module or thorax side air bag module nuts.

Item 15: Seat Side Air Bag Module or Thorax Side Air Bag Module Disassembly Note

Scheme 233

1. Remove the side air bag module or thorax side air bag module from the deployment chute. Separate the side air bag module or thorax side air bag module and deployment chute from the seat back mounting bracket. Pull the side air bag module or thorax side air bag module mounting studs back through the deployment chute openings and remove the side air bag module or thorax side air bag module from the deployment chute.

Item 16: Connector Disassembly Note

Scheme 234

1. Squeeze the tabs together, disconnect and remove the side air bag module or thorax side air bag module.

Item 1: Backrest Trim Panel Assembly Note

1. Align the seat back trim panel J-hooks to the seat back frame at the top and engage the pin-type retainers at the bottom of the seat back frame. Inspect the lower panel attachments. If either pin-type retainer remained in the seat frame, install a new panel. Inspect the upper panel attachments. If either J-hook is cracked or damaged, install a new panel. Before installing the panel, install new pin-type retainers.

Rear Seat Backrest

Item 4: 60 Percent Seat Backrest Trim Cover Disassembly Note

Scheme 235

1. Separate the hook and loop fasteners.
2. Remove and discard the hog rings.

Item 9: 40 Percent Seat Backrest Trim Cover Disassembly Note

Scheme 236

1. Separate the hook and loop fasteners.
2. Remove and discard the hog rings.