Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Components For Control and Regulation of the A/C System Outside Passenger Compartment



Components For Control And Regulation Of The A/C System Outside Passenger Compartment

NOTE:
- If there is a malfunction in the system, first check DTC memory of front A/C control head Climatronic Control Module J255 (and of Rear A/C Control Head (Climatronic) E265). Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
- If no malfunction is indicated, read out measuring value block of front A/C control head Climatronic Control Module J255 (and of Rear A/C Control Head (Climatronic) E265) and actuate any faulty component via the "output Diagnostic Test Mode (DTM)" function. Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
- Servicing operations on A/C system that are possible without opening refrigerant circuit
- Servicing operations on A/C system that require the refrigerant circuit to be opened
- After completion of repair perform the following:
- Check DTC memory of front A/C control head Climatronic Control Module J255 (and of Rear A/C Control Head (Climatronic) E265) and erase any DTCs displayed Vehicle Diagnosis, Testing and Information System VAS5051 in the "Guided Fault Finding" function.
- Check coding of front A/C control head Climatronic Control Module J255 Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
- If necessary, check adaptation of front A/C control head Climatronic Control Module J255 and of Rear A/C Control Head (Climatronic) E265 (not installed in all vehicles) Vehicle Diagnosis, Testing and Information System VAS5051 in the "Guided Fault Finding" function.
- Perform basic setting of A/C system. Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.