Control Panel/Module Test Display (12-95 To 3-97 Production)

The E36 IHKA control panel/module includes additional programming that allows system diagnosis without the use of the DIS or MoDiC; sensor values and other inputs are shown on the LCD display. This function is found on systems produced from 12-95 thru 3-97.

Fig 1: Identifying Control Panel/Module Test Display

The sensor display mode is activated by pressing the "AUTO" and rear window defroster buttons simultaneously.

Fig 2: Identifying Auto Buttons

Fig 3: Identifying Rear Window Defroster Buttons

Available displays are:

Interior temperature
Ambient temperature
Left heater core temperature
Right heater core temperature
Evaporator temperature
Engine speed
Road (vehicle) speed
Y-factor value
Fresh-air flap position (in % up to 99.5%)
AUC sensor voltage (if equipped)
Battery voltage
Software version.

The sensor display is switched "Off" by pressing the "AUTO" and recirculating air buttons simultaneously, or by switching the ignition "Off."

Fig 4: Identifying Auto Button

Fig 5: Identifying Recirculating Air Button

NOTE: The control panel/module LED display does not include a decimal point or percent symbol, so 99.5% is displayed as 995.

Temperatures are always shown in degrees Celsius, regardless of module coding.

Blower speed cannot be adjusted during sensor display mode.