Component description for electrohydraulic power steering - GF46.30-P-2310CEB

MODEL 204.902/982/984 

MODEL 204.987 as of 1.7.10 up to 31.5.11 

Location 

The electrohydraulic power steering is under the right headlamp behind the front bumper.

Task 

The task of the electrohydraulic P/S is divided up into the following subtasks:

• Regulation of the power steering pump 
• Evaluation of input and output signals 

Regulation of the power steering pump 

Depending on the request (vehicle standstill, vehicle speed), the power steering pump is regulated by the electrohydraulic power steering as per a specified characteristics map.

Evaluation of input and output signals 

Direct input signals 

• Circuit 30
• Circuit 15
• Circuit 31

Chassis CAN (CAN E) signals 

• Electronic ignition lock control unit (N73), battery voltage
• Steering column tube module control unit (N80), steering angle and steering angle rate of change
• IC (A1), transfer of current vehicle speed from IC and transfer of signals for instrument cluster messages to the IC
• Front SAM control unit with fuse and relay module (N10/1), onboard electrical system status

Wiring diagram for electric power steering control unit

PE46.35-P-2101-97FAA