Accessing Input Signals
WARNING: This page is about a different car, the 1997 BMW M3, 1997 BMW 328is, 1997 BMW 328i, 1997 BMW 318is, and 1997 BMW 318i. However, it is still accessible from the selected car via links, so may be relevant.
Automatic A/C-heater control panel can display 12 input signals. To access signal, simultaneously press AUTO and rear defogger buttons. Press fan rocker button to toggle through the displays. See A/C-HEATER CONTROL UNIT INPUT SIGNALS . To exit A/C-heater control panel display, press recirculate and AUTO buttons simultaneously or turn ignition off.
A/C-HEATER CONTROL UNIT INPUT SIGNALS
| Test No. | Signal | ||||
|---|---|---|---|---|---|
| 1 | Interior Temperature Sensor (1) | ||||
| 2 | Exterior Temperature Sensor (1) | ||||
| 3 | Left Heater Core Temperature Sensor (1) | ||||
| 4 | Right Heater Core Temperature Sensor (1) | ||||
| 5 | Evaporator Temperature Sensor (1) | ||||
| 6 | Engine RPM Input | ||||
| 7 | Vehicle Speed Input | ||||
| 8 | "Y" Factor Value | ||||
| 9 | Fresh Air Flap Position In Percent (2) | ||||
| 10 | AUC Sensor Voltage (If Equipped) | ||||
| 11 | Battery Voltage | ||||
| 12 | Software Version | ||||
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