Function
It tells the ambient air temperature to the instrument panel.
Operating principle
NTC type sensor (resistance sensor, inversely variable with temperature).
Level in wiring diagram: Temperature sensors
Location:
- on the vehicle: on the plastic protection under the instrument panel
- connector: under the instrument panel
Electrical characteristics:
- Resistance at 0°C: 32.5 kOhm +/- 5%
- Resistance at 25°C: 10.0 kOhm +/- 5%
Pin-out:
- 1. Voltage 5V
- 2. Ground connection
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Axone: electrical errors
Instrument panel DSB 06
Error cause
The oil sensor failure is signalled when it is detected that the sensor circuit is open or short circuit to positive.
Troubleshooting
Check the sensor connector and the instrument panel connector (PINS 10 and 30): If not OK, restore; if OK, check the continuity of the pink cable between the sensor connector and the instrument panel connector PIN 10: if not OK, restore the cable harness; if OK, check the correct sensor resistance: if not OK, replace the sensor; if it is OK, check the continuity of the yellow/black cable between the sensor connector and the instrument panel connector PIN 30: If not OK, restore the cable harness; if OK, with key set to ON, check if there is voltage at the sensor connector PIN 1: if there is no voltage, replace the instrument panel; if there is approximately 12V, restore the cable harness (there is a short circuit in the battery). If there is 5V voltage, connect a 10 kOhm resistance to sensor connector PIN 1 and to the vehicle ground connection: if, with key set to ON, the voltage measured upstream the resistance decreases, replace the instrument panel. If voltage continues to be approximately 5V, restore the pink cable (there is a short circuit at + 5V).
Notes:
- If a short circuit to ground is detected at instrument panel connector PIN 10, the display will shown a full scale indication ????? of air temperature.
- Check the earth insulation of the sensor connector pink cable: if there is a connection, restore the cable harness; if it is earth insulated, check that sensor resistance is correct: if not OK, replace the sensor; if it is OK, replace the instrument panel.