Electrical tests (to be performed on Climatronic Control Module J255), overview

NOTE:

Various items of information are transmitted via the CAN-Bus comfort system (reading measuring value block → Read Measuring Value Block (function 08) ). There are no electrical checks provided for this information.

Test step	Component tested		Refer to
1	Voltage supply and Ground (GND) connection of operating and display module, Climatronic Control Module J255
2	Fresh Air Intake Duct Temperature Sensor G89 Right Vent Temperature Sensor G151, Front Vent Temperature Sensor G152, Left Footwell Vent Temperature Sensor G261, Right Footwell Vent Temperature Sensor G262, Evaporator Vent Temperature Sensor G263
3	Wiring to Fresh Air Blower Control Module J126 and Fresh Air Blower V2
4	Positioning motors for climate control system and potentiometers - Central Air Flap Motor V70/Central Flap Motor Position Sensor G112, Air Flow Flap Motor V71/Back Pressure Flap Motor Position Sensor G113, Defroster Flap Motor V107/Defroster Flap Motor Position Sensor G135, Recirculation Flap Motor V113/Recirculation Flap Motor Position Sensor G143, Left Temperature Flap Motor V158/Left Temperature Flap Potentiometer/Actuator G220, Right Temperature Flap Motor V159/Right Temperature Flap Potentiometer/Actuator G221
5	Pressure signal from High Pressure Sensor G65
6	Activation for A/C Compressor Regulator Valve N280
7	Signal from Sunlight Photo Sensor G107