Passenger Airbag

Passenger Airbag

The airbag DCU (C0256) controls the feed to the passenger airbag (C0433) on a W wire. The earth path for the passenger airbag (C0433) is controlled by the airbag DCU (C0256) on a U wire.

Seat Belt Pre-tensioners

RH The airbag DCU (C0256) controls the feed to the RH pre-tensioner (C0254) on an N wire. The earth path for the RH pre-tensioner (C0254) is controlled by the airbag DCU (C0256) on an NR wire.

LH The airbag DCU (C0256) controls the feed to the LH pre-tensioner (C0252) on an O wire. The earth path for the LH pre-tensioner (C0252) is controlled by the airbag DCU (C0256) on an OU wire.

SRS LED

Fuse 8 of the passenger compartment fuse box (C0589) provides an ignition feed to the SRS LED (C0233) on a G wire. To illuminate the LED (C0233), an earth path is provided on a YR wire via the airbag DCU (C0256). To extinguish the LED, the airbag DCU withdraws the earth path.

Diagnostic Socket

The SRS system can be interrogated using TestBook or T4 via the diagnostic socket. The diagnostic socket (C0040) is connected to the airbag DCU (C0256) by a K wire.