Description - electric seats

Description - electric seats

General

All markets use the same electric seat system. Electically operated lumbar support is optional. The system consists of an electrical sub-system and a mechanical sub-system.

The electrical sub-system consists of the following components: l BCU. l Seat power relays. l Seat switch packs. l Seat fore/ aft motors. l Seat cushion front up/ down motors. l Seat cushion rear up/ down motors. l Seat squab motor. l Lumbar pump. l Lumbar deflate solenoid.

The mechanical sub-system consist of the following components: l Gear wheels. l Rack and pinion assemblies.

Seat power relay

Located beneath the seat, the seat power relay supplies battery voltage to the satellite fuse box. Operation of the relays is controlled by the BCU.

Voltage to the seat power relays is from fuse 5 in the engine compartment fuse box. The BCU controls the earth for the relay coils. Operating the seat power relays provides voltage to the satellite fuse box under each seat.

Satellite fuse box

Located beneath the seat, the satellite fuse box provides circuit protection for the wiring to the seat switches and motors. It also protects the lumbar inflate and deflate circuits.

The seat power relay provides voltage directly to the 40A fuse in the satellite fuse box. Voltage from this fuse feeds the seat switch pack. The 3A fuses in the satellite fuse box protect the wiring to the lumbar pump and lumbar deflate solenoid. Voltage to the 3A fuses comes from the seat switch pack.