For 1990-2009 cars

### Removal Procedure

Caution: Replace the passenger presence system as a complete assembly to prevent possible injury to the occupant. The bladder, the pressure sensor, the seat cushion, and the control module are assembled and calibrated as a unit. Using only some of the components in the service kit will cause the passenger presence system to operate improperly.

1. Remove the seat cushion trim cover and pad.
2. Disconnect the electrical connectors.
3. Remove the bolts that retain the electronic control unit (ECU) (1) from the bottom of the passenger seat cushion frame.
4. Remove the pressure switch (2) from the bottom of the passenger seat cushion frame.
5. Remove the push-in retainers (1) that hold the bladder to the seat cushion frame.
6. Remove the inflatable restraint passenger presence system from the seat.

### Installation Procedures

1. Install the inflatable restraint passenger presence system to the seat.
2. Install the push-in retainers (1) that hold the bladder to the seat cushion frame.
3. Install the pressure sensor (2) to the bottom of the passenger seat cushion frame.

Notice: Refer to Fastener Notice in the Preface section.

4. Install the bolts that retain the ECU (1) to the bottom the passenger seat cushion frame.

Tighten
Tighten the bolts to 2 N·m (18 lb in).

5. Connect the electrical connectors.
6. Install the seat cushion trim cover and pad.
7. Re-zero the inflatable restraint passenger presence system. Refer to Control Module References .