Incorrect Ambient Temperature Reading

SYMPTOM
* INCORRECT AMBIENT TEMPERATURE READING

POSSIBLE CAUSES
- Open sensor ground/defective CMTM
- Sensor ground circuit partial short/ground
- Defective Ambient Temp Sensor/road test
- Ambient Temp Sensor signal circuit-partial short/ground
- Defective Compass/Mini-Trip module
- Defective Compass/Mini-Trip module/sensor ground ckt
- Ambient Temperature Sensor signal ckt - short/sensor ground