LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 171 (Instrument Panel System Displays And Gauges) >> Diagnostic Information and Procedures >> Outside Air Temperature Display Malfunction (with LTG, LCV, LD4, or LGX) >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to: Instrument Cluster Description and Operation 

Circuit Description
Signal The control module input circuit has an internal resistance connected to 5 V.
Low Reference Grounded through the control module.
Component Description
B9 Ambient Air Temperature Sensor The temperature sensor is a negative temperature coefficient thermistor, a resistor which changes based on temperature.
K20 Engine Control Module The K20 control module monitors the B9 ambient air temperature sensor. The control module converts the analog voltage signal input to a temperature value.
scientia non olet · About LEMON Manuals