Test Point 13

Test Point 13

Outside temperature sensor value
- Engine off

PST2 display:
Tester display approximately equals the ambient temperature

Troubleshooting:
- Warm sensor with fingers and observe the increase in temperature on PST 2. If no change in temperature is determined or displayed.
- Disconnect outside temperature sensor
- Switch ignition on
- Measure the voltage at the outside temperature plug, pin 1 and pin 2 Voltmeter display: approx. 4.5 - 5 V
- Ohmmeter on pin 1 and pin 2 on the outside temperature sensor Ohmmeter display at 20 degrees C: 2.5 - 3 KOhms.
- Switch off ignition
- Pull off plug I on the instrument cluster
- Switch ignition on
- Measure the voltage between plug I on outside temperature sensor, pin 1 and ground Voltmeter display: 0 V
- Switch off ignition
- Ohmmeter on outside temperature sensor plug, pin 2 and ground
Ohmmeter display: < 5 Ohms.
- Ohmmeter on instrument cluster plug I pin 17 and plug on outside temperature sensor pin 1
Ohmmeter display: < 5 Ohms.

If no fault is established in the wires or on the outside temperature sensor, replace the instrument cluster.