A/C Control Head on Board Diagnostic (OBD) Display, Checking

In addition to A/C system On Board Diagnostic (OBD) using the VAG 1551 Scan Tool (ST), the A/C control head contains a 61-channel OBD display which can be accessed without the use of special tools.




Starting display
- Switch ignition ON or start engine.
- Press and hold down RECIRCULATION button -1-.
- Press and hold down upper AIR DISTRIBUTION button -2-.
- Release both buttons.
"01c" will be displayed ( "01c" indicates channel 1, "02c" indicates channel 2, etc. )

To select a different channel:
- Press temperature "+" button to go to next higher channel.
- Press temperature "-" button to go to next lower channel.

To call up information about a particular channel:
- Select desired channel.
- Press RECIRCULATION button -1-.

To leave memory display:
- Press AUTO button, or
- Switch ignition OFF.