Seat Backrest - Front, Without Seat Integrated Restraints (SIR)
SEAT BACKREST - FRONT, WITHOUT SEAT INTEGRATED RESTRAINTS (SIR)Special Tool(s)
Special Tool(s):
Disassembly and Assembly
WARNING: Never probe the electrical connectors on safety belt buckle/retractor pretensioners or adaptive load limiting retractors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors, which increases the risk of serious personal injury or death.
CAUTION: It is necessary to carry out the occupant classification sensor (OCS) system reset when a front passenger seat cushion is disassembled, a new trim cover is installed or an OCS system service kit is installed. A scan tool is used to carry out the OCS system reset command. Failure to follow this instruction may result in system failure and the incorrect operation of the OCS system.
NOTE:
- The air bag warning indicator illuminates when the restraints control module (RCM) fuse is removed and the ignition switch is ON. This is normal operation and does not indicate a supplemental restraint system (SRS) fault.
- The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- LH shown, RH similar.
All seats
1. Remove the seat.
2. Remove the seat backrest.
3. Remove the backrest trim cover.
Heated seat
4. Disconnect the backrest heater mat electrical connector.
5. CAUTION: If installing a new backrest foam pad, the heater mat cannot be reused. A new heater mat must be installed. Failure to follow this instruction can result in component or system failure.
NOTE: A new heater mat can be attached to a foam pad where an old heater mat was removed but a used heater mat should not be reattached to any foam pad.
To service the backrest heater mat, peel and remove the backrest heater mat from the backrest foam pad.
- If reusing the backrest foam pad, take precautions not to remove excess foam when peeling off the heater mat. If the foam pad is damaged, install a new foam pad and a new heater mat.
- For installation, align and lay the heater mat flat on the foam pad surface without any wrinkles and correctly tuck into the valley of the foam pad.
All seats
6. Remove the backrest foam pad.
7. Detach the lumbar assembly retainer clips.
8. Remove the lumbar assembly.
9. Remove the recliner roll pin.
10. Remove the recliner strut.
11. Remove the bushing and recliner.
12. To assemble, reverse the disassembly procedure.
13. Install the seat. If a passenger seat has been serviced, do not prove out the SRS at this time.
Passenger seat
14. WARNING:
- Install a new occupant classification sensor (OCS) system service kit as a complete assembly. Never install only part of the kit components. Failure to follow this instruction may result in incorrect operation of the OCS system and increases the risk of serious personal injury or death in a crash.
- 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 carrying out the System Reset. Failure to follow these instructions may result in incorrect operation of the occupant classification sensor (OCS) system and increases the risk of serious personal injury or death in a crash.
CAUTION:
- It is necessary to carry out the occupant classification sensor (OCS) system reset when a front passenger seat cushion is disassembled, a new trim cover is installed or an OCS system service kit is installed. A scan tool is used to carry out the OCS system reset command. Failure to follow this instruction may result in system failure and the incorrect operation of the OCS system.
- 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 8.0 volts and less than 18.0 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 process. 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 switch ON before the carrying out the OCS system reset process.
NOTE: If the first attempt to carry out the OCS system reset is unsuccessful, a second attempt must made. If the second attempt to carry out the OCS system reset is unsuccessful, a new OCS system service kit must be installed.
Carry out the OCS system reset command using the scan tool.
15. Cycle the ignition switch from ON to OFF.
16. NOTE: The ignition switch must be cycled after the OCS system reset.
Cycle the ignition switch from OFF to ON.
All seats
17. Prove out the SRS as follows:
Turn the ignition key from ON to OFF. Wait 10 seconds, then turn the key back to ON and visually 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 present, the air bag warning indicator will:
- fail to light.
- remain lit continuously.
- flash at a 5Hz rate (RCM not configured).
The air bag warning indicator might not light until approximately 30 seconds after the ignition switch has been turned from the OFF to the ON position. This is the time required for the 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 continuous DTCs from the RCM using a scan tool.