Incorrect Ambient Temperature Sensor Readings

Tests 1 - 2:

Tests 3 - 5:

Tests 6 - 8:

SYMPTOM
INCORRECT AMBIENT TEMPERATURE READINGS (GENERALLY WITHIN ± 5 °F)

POSSIBLE CAUSES
- Open sensor ground/Defective CMTC
- Sensor ground circuit partial short to ground
- Defective ambient temperature sensor/road test
- Ambient temperature sensor signal circuit - partial short to ground
- Ambient temperature sensor signal circuit - shorted
- Defective Compass/Mini-Trip Module
- Defective Compass/Mini-Trip Module/sensor ground circuit