Try this: Hold down AUTO and MODE while turning on the key, and the A/C display flashes between two numbers. Press the rear window defogger (leftmost) button to advance to the next sensor.
The first number is the sensor:
1 = in car temp
2 = outside temp
3 = sun sensor
4 = engine coolant tmperature
5 = evaporator temp
6 = air mix opening %
7 = vent temp out
8 = something about the fan
9 = vehicle speed
For the temperature sensors the reading is in degrees C. If a sensor is disconnected or shorted, it displays "Er".
For what it's worth, I tried that the other day - very interesting!Just Frank said:This is described in the service manual. I just got mine and saw this too in the section about the climate control.
For $75.00 the service manual is a pretty good investment. Albeit a very hefty tome.