GF91.30-P-5218GM Seat Heater, Seat Ventilation and Steering Wheel Heater Control Unit, Component Description

GF91.30-P-5218GM Seat Heater, Seat Ventilation And Steering Wheel Heater Control Unit, Component Description
- with CODE (872) Electric seat heater for left and right rear seat
- with CODE (401) Front comfort seats, including seat heating and seat ventilation
- with CODE (443) Steering wheel heater

Component Identification:

Location
The seat heater, seat ventilation and steering wheel heater control unit is located under the right-hand seat cushion of the 2nd seat row.

Task
The seat heater, seat ventilation and steering wheel heater control unit has the following tasks:
^ Reading in of signals
^ Evaluating input factors
^ Actuating components

Reading in of signals
Signals are read in via the following connection:
^ Interior CAN

Interior CAN
Signals are read in via the interior CAN from the following components:
- EIS [EZS] control unit (N73)
- Upper control panel control unit (N72/1)
- RCP [HBF] control unit (N72/2)
- AAC [KLA] control and operating unit (N22) (without code (581) (Comfort automatic air conditioning) or C-AAC control and operating unit (N22/7) (with code (581) Comfort automatic air conditioning)

- KEYLESS-GO control unit (N69/5) (with code (889) Keyless Go)

Evaluating input factors
The signals (input factors) that are read in are evaluated by the integrated microprocessor and the relevant components are actuated or shut off accordingly.

Component actuation
The relevant components are actuated via the following connection:
^ Direct line

Direct line
The following components are actuated via a direct line:
- Heater pad for left-hand seat in 2nd seat row (R13/5) (with code (872) Electric seat heater for left and right rear seat)
- Heater pad for left-hand backrest in 2nd seat row (R13/6) (with code (872) Electric seat heater for left and right rear seat)
- Heater pad for right-hand seat in 2nd seat row (R13/7) (with code (872) Electric seat heater for left and right rear seat)
- Heater pad for left-hand backrest in 2nd seat row (R13/8) (with code (872) Electric seat heater for left and right rear seat)
- Left front seat ventilation blower regulator (N29/5) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
- Right front seat ventilation blower regulator (N29/6) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
- Steering wheel heater (R22/4) (with code (443) Steering wheel heater)