Seat Backrest — Front

Special Tool(s)

Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Removal

NOTE: For parts identification and location, refer to Seat — Exploded View, Front in this section.

NOTE: Note all harness routing for correct installation.

1. Remove the seat and depower the Supplemental Restraint System (SRS). For additional information, refer to Seat — Front in this section.

2. Remove the clip and recline handle.
   • Access the clip from between the cushion cover and side shield.
   • Use a suitable tool to pull the clip forward and release.

3. If equipped, remove the manual height adjust handle.
   • Remove the handle cover.
   • Remove the 2 screws and manual height adjust handle.

4. NOTICE: Do not reinstall the cushion side shield or side shield retainers after removal. These are one-time-use items that become damaged during removal and may not remain attached if reinstalled. Install a new side shield during seat assembly.

   Remove and discard the cushion side shield.
   • Remove the screw at the rear of the cushion side shield.
   • Separate the side shield and retainers from the seat.
   • If equipped, disconnect the electrical connector, remove the seat control switch knob and seat control switch.
   • If equipped, disconnect the electrical connector and remove the power lumbar switch.
   • Remove and discard the cushion side shield.
   • Remove any remaining retainers from the seat and discard the one-time use retainer clips.

5. Separate the side air bag module electrical connector and wire harness pin-type retainers from the seat track bracket and cushion frame.

6. If equipped with heated seats or power lumbar, release the cushion cover rear J-clip, disconnect the electrical connector(s) and separate the wire harness from the cushion frame.

7. Remove the seat backrest.
   • Release the cushion and backrest covers for access and remove the 4 backrest mounting bolts.
   • Separate the backrest from the cushion frame.

Installation

All seats

1. Position the backrest to the cushion frame and install the 4 backrest mounting bolts.
   • Tighten to 55 Nm (41 lb-ft).

2. If equipped, connect and attach the heater mat and power lumbar electrical connectors.
   • Fasten the cushion cover rear J-clip.

3. Install the side air bag module wire harness and connect the electrical connector.
   • Route the wiring harness as noted in removal.

4. Install a new cushion side shield.
   • If equipped, install the seat control switch, knob and electrical connector.
   • If equipped, install the power lumbar switch and connect the electrical connector.
   • Make sure all the side shield retainers are correctly installed to the side shield.
   • Install the side shield and retainers to the seat.
   • Install the side shield screw.

5. If equipped, install the manual height adjust handle, 2 screws and cover.

6. Install the retainer to the recline handle and install to the seat.

7. Install the seat and repower the SRS . For additional information, refer to Seat — Front in this section.

Passenger seat

8.  WARNING: Make sure the front passenger seat repair is complete, the seat and all attached components (head restraint, seat side shield, etc.) are correctly assembled, and the seat is correctly installed to the vehicle before using System Reset to rezero the seat weight. Failure to follow these instructions may result in incorrect operation of the occupant classification system (OCS) and increases the risk of serious personal injury or death in a crash.

   NOTICE: To prevent system failure, the following precautions must be taken before carrying out the Occupant Classification Sensor (OCS) system reset:

   • Make sure the voltage to the Occupant Classification System Module (OCSM) is above 8 volts and less than 18 volts.
   • Make sure the OCS system is not at a temperature below 6°C (42°F) or above 36°C (97°F) when initiating the OCS system reset. If the vehicle has been exposed to extreme cold or hot temperatures, the vehicle must be exposed and kept at a temperature within the limits, 6°C to 36°C (42°F to 97°F) for a minimum of 30 minutes.
   • Make sure nothing is present on the passenger seat before carrying out the OCS system reset and nothing is placed on the seat during the process.
   • Make sure a minimum 8-second time period has passed after cycling the ignition ON before carrying out the OCS system reset.
   Carry out the Occupant Classification Sensor (OCS) system reset.

9. If the first system reset attempt was unsuccessful, make sure no OCSM DTCs are present. If DTC C1941 is the only one retrieved, it will clear upon a successful system reset. All other OCS system DTCs must be diagnosed and repaired before carrying out the OCS system reset.

10. Carry out a thorough inspection of the following and repair any concerns found.
    • OCS system connector and wiring for damage
    • Pressure sensor hose for kinks and/or damage
    • Seat-related wiring harness and body wiring harness terminals and connectors for damage

11. Carry out a second OCS system reset. If the system reset was unsuccessful, install a new OCS system service kit. For additional information, refer to the Removal and Installation procedures in Section 501-20B .

12. Prove out the SRS as follows:
    Turn the ignition from ON to OFF. Wait 10 seconds, then turn the ignition ON and monitor the air bag warning indicator with the air bag modules installed. The air bag warning indicator will light continuously for approximately 6 seconds and then turn off. If an air bag SRS fault is detected, the air bag warning indicator will:
    - fail to light.
    - remain lit continuously.
    - flash.
    The flashing might not occur until approximately 30 seconds after the ignition has been turned from the OFF to the ON position. This is the time required for the Restraints Control Module (RCM) to complete the testing of the SRS . If the air bag warning indicator is inoperative and a SRS fault exists, a chime will sound in a pattern of 5 sets of 5 beeps. If this occurs, the air bag warning indicator and any SRS fault discovered must be diagnosed and repaired.
    Clear all RCM and OCSM CMDTCs .