Seat Occupant Sensor: Service and Repair
Passive Occupant Detection System
CAUTION!
Observe safety precautions for work on airbags.
CAUTION!
Replacement part (service kit) for seat occupied sensor (USA) is already pre-calibrated and must not be disconnected under any circumstance. The service kit consists of:
• Passive Occupant Detection System Control Module -J706
• Passive Occupant Detection System Pressure Sensor -G452
• Passive Occupant Detection System Mat
• Seat cushion
• Wiring harness between the passive occupant detection system control module -J706 and passive occupant detection system pressure sensor -G452.
• The passive occupant detection system is only installed on the front passenger seat.
1 Passive Occupant Detection System Control Module J706
Removing
- Disconnect the battery ground (GND) strap.
- Remove the passenger seat. Refer to => [ Power Front Memory Seat ] Power Front Memory Seats.
- Mount the fixture for seat repair (VAS 6136) on the engine and transmission holder (VAS 6095).
- Attach the front seat to the fixture for seat repair (VAS 6136).
- Remove the backrest. Refer to => [ Front Backrest ] Front Backrest.
- Disconnect connector - 6 -.
- Remove bolts - 2 - (Qty. 2).
- Remove cover upholstery. Refer to => [ Front Seat Covers and Upholstery ] Front Seat Covers and Upholstery, for power seat => [ Seat Pan Cover and Cushion, Standard Seat ] Front Seat Covers and Cushion, Power Memory Seats.
- Open the guide clip - 8 -.
CAUTION!
Connectors - 3 - and - 7 - must not be separated.
- Slide pressure sensor -G452- - 4 - along the side of the bracket - 9 -.
2 Bolts
• 2.5 Nm
3 Connector on Seat Occupied Recognition Control Module -J706
• Must not be separated under any circumstances.
4 Passive Occupant Detection System Pressure Sensor -G452
5 Pressure Hose
6 Connector Between Service Kit and Seat Wiring Harness
7 Connector on Seat Occupied Recognition Pressure Sensor -G452
• Must not be separated under any circumstances.
8 Guide Clip
9 Retaining Bracket
Service Kit, Removing
- Fold the cushion - 5 - upward.
• The cushion is included as part of the service kit.
• Clip - 4 - must not be separated.
• The hard foam insert in the crease is not included in the service kit.
- Remove clips - 2 - and - 3 - (Qty. 2).
- Carefully pull mat for seat occupied recognition - 1 - with upholstery - 5 - upward, when doing this guide Seat Occupied Recognition Pressure Sensor -G452- and Seat Occupied Recognition Control Module -J706- through seat pan without disconnecting harness connectors.
- Remove the complete service kit.
CAUTION!
The pressure hose and the Seat Occupied Recognition Mat - 1 - must not be kinked under any circumstances during repairs.
Service Kit, Installing
• The hard foam insert in the crease is not included in the service kit. Therefore, reuse the hard foam insert again in the seat crease.
- Guide the Seat Occupied Recognition Pressure Sensor -G452 and Seat Occupied Recognition Control Module -J706 from above through the seat pan without separating the electrical connections.
- Pull the crease between seat pan and Seat Occupied Recognition Mat - 1 - so that it is smooth (free of folds).
- Secure the Seat Occupied Recognition Mat - 1 - with the clips - 2 - and - 3 - (Qty. 2).
1 Passive Occupant Detection System Control Module -J706
Installing
- Secure Seat Occupied Recognition Pressure Sensor -G452- - 4 -.
- Secure the Seat Occupied Recognition Control Module -J706 with the bolts - 2 - (Qty. 2) to 2.5 Nm.
- Connect connector - 6 -.
- Upholster the seat pan, thereby all upholstery clips must be attached and be installed at the original position. Refer to => [ Front Seat Covers and Upholstery ] Front Seat Covers and Upholstery, for electric seat => [ Front Seat Covers and Cushion, Power Memory Seats ] Front Seat Covers and Cushion, Power Memory Seats.
Further installation is performed in the reverse order of removal.
- After installing the passenger seat in the vehicle, the following program must be performed under "Airbag" in Guided Fault Finding.
When installing a new service kit and after every repair on the front passenger seat:
• -J706 Passive occupant detection system control module basic setting
2 Bolts
• 2.5 Nm
3 Connector on Seat Occupied Recognition Control Module -J706
• Must not be separated under any circumstances.
4 Passive Occupant Detection System Pressure Sensor -G452
5 Pressure Hose
CAUTION!
The pressure hose - 5 - and the Seat Occupied Recognition Mat must not be kinked under any circumstances during repairs.
- Secure pressure hose at guide clip - 8 - at specified marking.
6 Connector Between Service Kit and Seat Wiring Harness
7 Connector on Seat Occupied Recognition Pressure Sensor -G452
• Must not be separated under any circumstances.
8 Guide Clip
9 Retaining Bracket