D83.40-1125-79
Shown on model 907 |
A6/1 | Stationary heater radio remote control receiver (with code HY1 (Radio remote control for hot-water auxiliary heater)) | N33/4 | PTC heater booster control unit (with code HH2 (Electric hot-air auxiliary heater)) | |
A32 | AC air recirculation unit | N33/13 | Warm air stationary heater control unit (with code H11 (Hot-air auxiliary heater)) | |
A33 | Roof-mounted air conditioning system (with code HH7 (Basic roof-mounted air conditioning system) or with code H08 (Enhanced roof-mounted air conditioning system) or with code HK4 (Rear air conditioning system, enhanced)) | N34/2 | Warm air stationary heater switch clock (with code H11 (Hot-air auxiliary heater)) | |
B10/4 | Interior temperature sensor | N73/8 | Electronic ignition lock (EZS) control unit | |
B12 | Refrigerant pressure sensor | N127 | Drivetrain control unit | |
B14 | Outside temperature sensor | CAN B | Interior CAN | |
B38/2 | Rain and light sensor (with code JF1 (Rain sensor)) | CAN C1 | Engine CAN | |
B95 | Battery sensor | CAN PER | Peripherals CAN | |
N3/28 | CDI control unit (with engine 642) | LIN B8 | Climate control LIN | |
N3/31 | CDI control unit (with engine 651 without code MH8 (SULEV low-pollutant engine)) | LIN B8-1 | Front air conditioning control LIN | |
N3/36 | ME-SFI control unit (with engine 274) | LIN B8-2 | Rear air conditioning control LIN (with code H13 (Rear additional heat exchanger)) | |
N3/47 | CDI control unit (with engine 651 with code MH8 (SULEV low-pollutant engine)) | LIN B8-3 | Roof air conditioning control LIN (with code HH7 (Basic roof-mounted air conditioning system) or with code H08 (Enhanced roof-mounted air conditioning system) or with code HK4 (Rear air conditioning system, enhanced)) | |
N10 | SAM control unit | LIN B15 | Battery sensor LIN | |
N22/2 | Automatic climate control control and operating unit (with code HH4 (THERMOTRONIC automatic climate control) or with code HH9 (Semi-automatically controlled air conditioning system, TEMPMATIC)) | LIN B16 | Rain and light sensor LIN (with code JF1 (Rain sensor)) | |
N29 | Electronic blower controller | O | Optional | |
N29/12 | Rear climate control electronic blower regulator (with code H13 (Rear additional heat exchanger)) | S | Default | |
N33 | Stationary heater control unit (with code H12 (Hot-water auxiliary heater) or with code HZ9 (Heater booster)) |
Function requirements, general
Control functions: circuit 15 ON
Climate control: Engine running.
The CDI control unit or the ME-SFI [ME] control unit forwards the "Engine running" signal over the engine CAN to the powertrain control unit over the peripherals CAN to the electronic ignition lock (EZS) control unit. The EZS control unit sends the circuit status of "circuit 15" as well as the "Engine running" signal to the SAM control unit via the interior CAN.
The ventilation, heating, air conditioning functions are actuated centrally over the SAM control unit. The individual components are operated using the corresponding controls.
Cab
There are 2 different versions of the air conditioning system installed in the cab:
Climate control with 1-zone temperature control with CODE HH9 (Semi-automatically controlled air conditioning, TEMPMATIC)
Climate control with 1-zone temperature control with code HH4 (THERMOTRONIC automatic climate control)
There are 3 different versions of the auxiliary heating installed in the cab:
With CODE H12 (Auxiliary water heater)
With code HH2 (Electric warm air auxiliary heater)
with code HZ9 (Heater booster)
Passenger/load compartment
There are 3 different versions of the air conditioning system installed in the passenger/load compartment:
With code HH7 (Standard roof-mounted air conditioning system)
With code H08 (Uprated roof-mounted air conditioning system)
With CODE HK4 (Rear A/C, enhanced)
There are 2 different versions of the auxiliary heating installed in the passenger/load compartment:
With CODE H11 (Warm air auxiliary heater)
With code H13 (Rear additional heat exchanger)
Roof ventilator:
With code H72 (Electric roof ventilator II)
Refrigerant
At the "M1" car registration the air conditioning systems are filled with refrigerant R-1234yf.
At the "N1/N2" truck registration the air conditioning systems are filled with refrigerant R-134a.
Auxiliary heater, function | With code H12 (Hot-water auxiliary heater) or with code HZ9 (Heater booster) | ||
PTC heater booster, function | With code HH2 (Electric warm air auxiliary heater) | ||
Overview of system components for climate control | |||
Electrical function schematic for climate control input signals | Model 907 | ||
Model 910 | |||
Electrical function schematic for climate control actuation | Model 907 | ||
Model 910 |