Power Distribution Module: Description and Operation
Multifunctional Control Units
9710 - Vehicle Electrical System Control Unit
The vehicle electrical system control unit converts various analog signals from the functional groups
Exterior lights
Front / rear lid opener
into digital CAN messages and outputs them on the CAN bus.
At the same time, the vehicle electrical system provides the switching outputs for the functional groups
Interior light
Filler flap lock/unlock
Heated rear window
Heated seats
Chassis wake-up
Front wiper/washer system
Headlight cleaning system
either in part or in their entirety. As functions of relevance to the customer are controlled and activated via the vehicle electrical system control unit, a large number of input data are required on this unit.
Diagnosis
The diagnosis interface is provided on the diagnosis connector via a diagnosis CAN bus and provides the PIWIS Tester with access to control unit data and functions. All input signals on the control unit can be read out and all actuating elements can be operated via the interface. Any stored faults can also be read out and deleted. Vehicle-specific parametric data can be encoded via the PIWIS Tester.
Some functional features of the vehicle electrical system are restricted or disabled in production and transportation mode.
97 - Front End Control Unit
The front end control unit converts various analog signals from the functional groups
- Exterior lights with direction indicator functions
- Outside temperature detection
- Front lid monitoring
into digital CAN messages and outputs them on the CAN bus.
At the same time, the front end system provides some or all of the switching outputs for the functional groups
- Exterior lights (front)
- Horn
- Luggage compartment lighting (front)
- Indicator lights
- Luggage compartment release (front)
- Safety catch release
- Automatic headlight beam level adjustment
- Fan output stage.
either in part or in their entirety. As functions of relevance to the customer are controlled and activated via the front end control unit, a large number of input data are required here.
Diagnosis
As for the vehicle electrical system control unit, diagnosis is carried out via the diagnosis CAN bus at the diagnosis plug.
Some functional features of the vehicle electrical system are restricted or disabled in production and transportation mode.
97 - Rear Control Unit
The rear control unit converts various analog signals from the functional groups
- Tray / glove compartment lock
- Rear lid lock
- Spoiler controller
- Interior sensor system
- Inclination sensor system
into digital signals and outputs them on the CAN bus.
At the same time, the rear control unit provides some or all of the switching outputs for the functional groups
- Hazard warning lights
- Cabrio top controller
- Spoiler controller
- Rear lights
either in part or in their entirety.
Diagnosis
As for the vehicle electrical system control unit, diagnosis is carried out via the diagnosis CAN bus at the diagnosis plug. Some functional features of the vehicle electrical system are restricted or disabled in production and transportation mode.
