Operation CHARM: Car repair manuals for everyone.

GF91.29-P-5222TX Right Front Seat Adjustment Control Unit With Memory, Component Description



GF91.29-P-5222TX Right Front Seat Adjustment Control Unit With Memory, Component Description
- with CODE (242) Electrically adjustable front passenger seat with memory

Component Identification:






Location
The front passenger front seat adjustment control unit is located underneath the seat frame of the front passenger seat.

Task
The front passenger front seat adjustment control unit is responsible for:
^ controlling the seat adjustment functions
^ recording and storing the actual position of the right outside mirror
^ recording and storing the actual seat positions as well as moving to stored positions of the seat adjustment function

Switching consumers using relays
^ Front passenger seat adjustment motor group with memory (M28)
^ forward/back motor (M28m1)
^ rear raise/lower motor (M28m2)
^ front up/down motor (M28m3)
^ head restraint raise/lower motor (M28m4)
^ backrest forward/back motor (M28m5)

Reading in of sensors
^ Hall sensors for front passenger seat height at front or back
^ Hall sensors for front passenger seat longitudinal adjustment or backrest adjustment
^ Hall sensors for front passenger seat head restraint

Discrete inputs
^ Circuit 15R
^ Terminal 30
^ Terminal 31
^ Hall sensor for seat adjustment motors

Discrete outputs
^ Voltage supply 12 V (+ and -) for the front passenger seat adjustment motor group with memory
^ Circuit 30 right front dynamic seat control unit (N32/22)
^ Circuit 31 right front dynamic seat control unit

CAN signals
The front passenger front seat adjustment control unit is a subscriber in the Controller Area Network bus class B (interior) (CAN-B).