Operation CHARM: Car repair manuals for everyone.

E. Electronic Switching Unit For Temperature Control









The electronic switching unit is available in two versions. For cars with the auxiliary heating water pump an internal relay is provided in the switching unit for controlling the pump (9). The relay, as well as the connection terminal 4, are not provided on cars without the auxiliary heating water pump.







Layout of switching unit
2 Temperature selector, left
3 Temperature selector, right
9 Electronic switching unit
14 Switch-over valve for main air flap (only with air conditioning)