Removal the air composition sensor "G238"
Instructions. The air composition sensor "G238" is installed only on cars with climate control, the "Comfort" system. The air composition sensor "G238" is a highly sensitive electronic component that can be destroyed by direct contact with solutions, fuel and certain chemical compounds (contaminants can penetrate through zone "A").
Therefore, do not install the air composition sensor "G238" that was stored, for example, in tool boxes. Do not store the removed air composition sensor "G238" in places where it comes into contact with solvents, fuel and certain chemical compounds (liquids or vapors). Air composition sensors "G238" come in a variety of designs with different operating principles, select the right design.
Turn off ignition. Remove rubber seal "B" on the left as much as necessary. Remove air intake duct cover on fairing "A" or fairing (various designs).
If necessary, carefully detach the fairing from the windshield frame mount "C". Turn the air composition sensor "G238" "A" approximately 90° to the left and remove it from the air intake duct "C". Disconnect the plug "B" of the air composition sensor "G238".
Pinout of the contacts in the plug "B" 1. Plus (terminal "15"); 2. Minus (terminal "31"); 3. Signal line to the on-board power supply control unit "J519".
Instructions. The signal from the air composition sensor "G238" cannot be measured by a workshop. The data from the air composition sensor "G238" is evaluated by the on-board network "J519" and transmitted via the bus system to the control and display unit, the Climatronic control unit "J255". The measured values of the air composition sensor "G238" are indicated in the measured value block of the control and display panel, the Climatronic control unit "J255", and in the measured value block of the on-board network control unit "J519".
[The original text of the material can be found on the website: AUDImanual]