Front Seat Back Frame Removal/Installation

WARNING:

Handling a front seat equipped with a side air bag improperly can accidentally operate (deploy) the air bag, which may seriously injure you. Read the service warnings/cautions in the workshop service information before handling the front seat (side air bag integrated). (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) (See AIR BAG SYSTEM SERVICE WARNINGS [STANDARD DEPLOYMENT CONTROL SYSTEM] .) (See AIR BAG SYSTEM SERVICE CAUTIONS [STANDARD DEPLOYMENT CONTROL SYSTEM] .)
If the sliding mechanisms on both sides are not locked after assembling the front seat, the front seat will operate accidentally while the vehicle is driven, which could result in serious injury. After assembling the front seat, shake it up and down and verify that the sliding mechanism on the both sides are locked.

CAUTION:

After the front seat has been removed, if the slider lever is operated and the front seat is reinstalled with the left/right slide positions deviated, the adjuster unit could be damaged. After removing a front seat, do not operate the slider lever.
Verify that there are no malfunctions in the forward/back slide of the seat and in the adjuster unit after installing a front seat.
When performing the procedure with a front seat removed from the vehicle, perform the procedure on a clean cloth so as not to damage or soil the seat.

Switch the ignition OFF (LOCK).
Disconnect the negative battery cable and wait for 1 min. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the following parts:
1. Front seat (See FRONT SEAT REMOVAL/INSTALLATION .)
2. Front seat side cover (See FRONT SEAT SIDE COVER REMOVAL/INSTALLATION .)
3. Front seat back component (See FRONT SEAT BACK COMPONENT REMOVAL/INSTALLATION .)
4. Front seat back trim (See FRONT SEAT BACK TRIM REMOVAL/INSTALLATION .)
5. Lumbar support unit (With lumbar support unit) (See LUMBAR SUPPORT UNIT REMOVAL/INSTALLATION .)
Remove the spring.

Fig 1: Front Seat Back Frame Component Location
Courtesy of MAZDA MOTORS CORP.
Remove the plate.
Install in the reverse order of removal.
When the passenger's seat is removed, perform the DTC inspection for the SAS control module using the M-MDS and verify that no DTCs are displayed. (See DTC INSPECTION [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)] .)
NOTE:
- If any DTCs are displayed, perform malfunction repair referring to the applicable DTC troubleshooting. (See DTC TABLE [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)] .)
When the passenger's seat is replaced with a new one, perform the occupant classification sensor calibration using the M-MDS. (See OCCUPANT CLASSIFICATION SENSOR CALIBRATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .)