Seat Position Sensor: Service and Repair

Seat Position Sensor

The seat position sensor is a component of the wiring harness to the passenger occupant detection system control module (J706) , whose electrical harness connectors must not be disconnected. To replace the seat position sensor, the electrical wires to the seat position sensor must be disconnected and the new seat position sensor must be connected with crimp connectors.

Removing

• Follow all of the general safety precautions for working on the airbag and the passenger occupant detection system.

• Before handling pyrotechnical components (for example, disconnecting the connector), the person handling them must "discharge static electricity". For example, by briefly touching the door striker pin.

- Remove the front passenger seat. Refer to => [ Front Seat ] Front Seat.

- Remove screw - 3 - and (0.3 Nm) and seat position sensor - 4 - from the seat pan lower frame.






Do not damage the insulation on the individual wires.

- Cut protective hose - 2 - to just in front of clip - 1 -.

- Cut through both electrical wires at the places marked with - arrow A - and - arrow B - to approximately 1/3 to 2/3 of the free length.

Installation

• Follow the general safety precautions for working on airbags.

• Before handling pyrotechnical components (for example, connecting electrical connector), the person handling them must "discharge static electricity". For example, by briefly touching the door striker pin.

- Cut the electrical wires on the new seat position sensor to the same length as those on the old sensor.

• The same wire colors must have the same length.

- Connect the electrical wires with crimp connectors - arrow A - and - arrow B -.






- Wrap the entire length of the wiring harness-from the clip to the seat position sensor-with fabric-reinforced adhesive tape.

- Install the seat position sensor, making sure the hook - arrow C - on the sensor is inserted in the seat pan lower frame.

Further installation is performed in reverse sequence of removal, but observe the following:

• Make sure the electrical connectors are pushed in as far as the stop and that they engage audibly.

Connect the battery with the ignition switched on. Pyrotechnic components could deploy after connecting the battery if they were not repaired correctly. Individuals must not be inside the vehicle when connecting the battery.

- Connect the battery ground cable with the ignition turned on.

• If the airbag indicator lamp (K75) indicates a fault after installation, the DTC memory must be checked, deleted and checked again.