Toyota 89173-39375
Front Impact Sensor

The first step for servicing the LH side Air Bag sensor consists of studying all safety precautions. The cable should disconnect from the negative battery terminal and users must wait at least 90 seconds to stop potential Air Bag deployment. You must unfasten the front door scuff plate LH together with the access door scuff plate LH and the front door opening trim Weather Strip LH to gain access to the side Air Bag sensor LH. The side Air Bag sensor LH needs its connector to be removed and the bolt as well as the sensor to be extracted. The repair work should start only when the ignition switch stands in the OFF position and the negative terminal remains unconnected for 90 seconds. Fasten the side Air Bag sensor LH using the provided bolt while applying a torque of 9.0 N.m corresponding to 92 kgf.cm and 80 in.lbf. One must replace the sensor if it suffers damage or if it drops. Review the position of SRS wiring so it does not scrape any other components while inspecting for loose contacts before attaching the connector to the side Air Bag sensor LH. The installation requires front door opening trim Weather Strip LH together with access door scuff plate LH and front door scuff plate LH. Reconnect the cable to the negative battery terminal while tightening it to 3.9 N.m torque (40 kgf.cm or 35 in.lbf). Systems need initializations following negative battery terminal removal according to specifications before checking SRS warning lights.

The No. 1 rear seat leg cover on the RH side, the No. 1 rear seat leg cover on the LH side, and the No. 2 rear seat leg cover on the LH side.

Connect the cable to the negative battery terminal with a torque of 5.4 Nm (55 kgf-cm, 48 in-lbf) and inspect the SRS warning light.

Remove the rear door opening trim weatherstrip RH.

Connect the cable to the negative battery terminal with a torque of 3.9 N.m (40 kgf.cm, 35 in.lbf).

Perform initialization as some systems require it after reconnecting the cable, and inspect the SRS warning light for proper function.

Disconnect the room light connector.

Connect the cable to the negative battery terminal, noting that some systems may require initialization after reconnection, and inspect the SRS warning light.

Connect the holder with connectors to the center airbag sensor assembly and verify that the water-proof sheet is properly set.

Verify there are no loose parts, connect the holder with connectors while avoiding damage to the airbag wire harness, and ensure the waterproof sheet is properly set.

Take out the rear seat assemblies for both the RH and LH sides.

Use a "Torx" socket wrench E10.

Install the rear seat outer belt assembly RH, rear deck trim cover, front quarter trim panel assembly RH, front door opening trim weatherstrip RH, and front door scuff plate RH.

Install the rear seatback assembly and rear seat cushion cover pad sub-assembly.