Freelander System Description and Operation
RESTRAINT SYSTEMS
DESCRIPTION AND OPERATION
75-5
Airbag DCU (Up To 2002 MY)
The airbag DCU controls the operation of the system and also contains the collision detection sensors. The airbag
DCU is attached to a bracket on the transmission tunnel, directly below the heater. On pre 2002 MY vehicles, a vehicle
earth connects to one of the fixings. A multi-pin connector provides the airbag DCU connection with the vehicle
harness.
Airbag DCU (From 2002 MY)
Incorporated into the airbag DCU is a mechanical safing sensor, an electronic single point sensor and integrated
circuits for control and diagnostics. The mechanical safing sensor is a normally open switch that closes at the preset
deceleration limit. The single point sensor is an accelerometer that produces an output proportional to the vehicle's
deceleration.