GF88.79-P-2000PQ Heat Left/Right Outside Mirrors Function

GF88.79-P-2000PQ Heat Left/right Outside Mirrors Function








1 Circuit 61
2 Outside temperature
3 Battery voltage
4 Switch on mirror heater
B14 Outside temperature display temperature sensor
G2 Generator
M21/1r1 Mirror heater
M21/2r1 Mirror heater
N3/9 CDI control unit (with diesel engines)
N3/10 ME-SFI control unit (with gasoline engines)
N10/1 Front SAM control unit with fuse and relay module
N69/1 Door control unit front left
N69/2 Door control unit front right
N73 EIS [EZS] control unit
N93 Central gateway control unit (up to 27.7.04)
CAN-B Controller area network bus class B (interior compartment) (CAN B)
CAN-C Controller Area Network bus, class C (engine compartment) (CAN C)
A Vehicles with engine 112, 113, 611, 612
B Vehicles with engine 271, 272, 642, 646 up to 27.7.04
C Vehicles with engine 271, 272, 642, 646 as of 28.7.04

Function requirements
- Circuit 61 On (engine running)
- No under/overvoltage
- Power window not activated

Function
The mirror heater (M21/1r1) in the left electrically adjustable and heated outside mirror and mirror heater (M21/2r1) in the right electrically adjustable and heated outside mirror consists of one heat resistor each located on a foil on the rear of the mirror lens.

The mirror heater (M21/1r1, M21/2r1) is switched on depending on the outside temperature measured by the outside temperature display temperature sensor (B14).
At outside temperatures of < 15°C, the mirror heater (M21/1r1, M21/2r1) is switched on and switched off at outside temperatures of > 19°C If the outside temperature value received vi a the
CAN-B (CAN-B) is implausible, the mirror heater (M21/1r1, M21/2r1) is switched on.
The left front door control unit (N69/1) and right front door control unit (N69/2) act as the power supply and control regulated switch-on and switch-off of.