Channel 21 - A/C on Signal

The control panel head generates a 12 volt "A/C ON" signal from terminal 23 in BI-LEV, AUTO and DEFROST. This signal is used to raise the idle speed approximately 100 RPM. On turbocharged engines, it is also used to activate the radiator fan on 1st speed.


To activate this display:





- If necessary, press the OFF button while pressing the OUTSIDE TEMP button.
- Press the WARMER button until '21 is displayed
- Press the COOLER button to display the information.

^ 00 = "A/C ON" signal OFF
^ 01 = "A/C ON" signal ON