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Home >> Mercedes Benz >> 2009 >> CL550 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control -- Cl550 -- 216 Chassis >> Wiring Diagrams >> Electrical function schematic, trigger heater preselect mode - PE83.70-P-2054-97CAA

Electrical function schematic, trigger heater preselect mode - PE83.70-P-2054-97CAA

Code: Designation: Position:
1 Heating duration, request 9B
1 Heating duration, request 4B
2 Heating duration, signal 7B
2 Heating duration, signal 2E
3 Start heating/ventilation, signal 4E
3 Start heating/ventilation, signal 3B
4 Stationary heater button, request 8K
4 Stationary heater button, request 5J
5 Preselection time menu, message 4D
6 Heating/ventilation, status 10C
7 In-car temperature sensor, signal 11A
8 Outside temperature indicator temperature sensor, signal 11C
8 Outside temperature indicator temperature sensor, signal 11F
9 Heat, request 6E
10 Fuel pump, actuation 7H
11 Stationary heater switchover valve, actuation 3H
12 Hot water circulation pump, request 11E
13 Hot water circulation pump, actuation 12E
14 Blower motor, request 12B
15 Blower motor, actuation 14B
A1 Instrument cluster 2E
A32m1 Blower motor 15C
A32n1 Blower regulator 13C
A6n1 STH control unit 5F
B10/4 In-car temperature sensor 12B
B14 Outside temperature display temperature sensor 13G
CAN B Interior CAN 5H
CAN B Interior CAN 10D
CAN B Interior CAN 7D
CAN B Interior CAN 7B
CAN B Interior CAN 5D
CAN F Central CAN 2C
LIN B8 Climate control LIN 12B
M13 Coolant circulation pump 13E
N10/1 Front SAM control unit with fuse and relay module 9E
N22/1 AAC [KLA] control unit 10A
N72/1 Upper control panel control unit 5K
N72/1s30 STH/residual heat button 8K
N93 Central gateway control unit 4B
Y16 STH switchover valve 3J
Y23 STH fuel metering pump 6J
Fig 1: Trigger Heater Preselect Mode Electrical Function Diagram
G07638926Courtesy of MERCEDES-BENZ USA