Typical Scan Tool Data
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IAT Sensor
| Circuit | Short to Ground | Open | Short to Voltage |
|---|---|---|---|
| Operating Conditions:
Engine running Parameter Normal Range: Varies with ambient temperature |
|||
| IAT Sensor Signal | 150°C (302°F) | -40°C (-40°F) | -40°C (-40°F)* |
| Low Reference | - | -40°C (-40°F) | -40°C (-40°F) |
| * Internal ECM or sensor damage may occur if the circuit is shorted to B+. | |||
IAT Sensor
| Circuit | Short to Ground | Open or High Resistance | Short to Voltage |
|---|---|---|---|
| Operating Conditions:
Key ON, engine OFF Parameter Normal Range: Varies with ambient temperature |
|||
| IAT Sensor Signal | 140°C (284°F) | -40°C (-40°F) | -40°C (-40°F)* |
| Low Reference | - | - | - |
| *Internal ECM or sensor damage may occur if the circuit is shorted to B+ | |||
Engine Coolant Temperature (ECT) Sensor
| Circuit | Short to Ground | Open | Short to Voltage |
|---|---|---|---|
| Operating Conditions:
Engine operating in Closed Loop Parameter Normal Range: Varies with coolant temperature |
|||
| ECT Sensor Signal | 150°C (302°F) | -40°C (-40°F) | -40°C (-40°F)* |
| Low Reference | - | -40°C (-40°F) | -40°C (-40°F) |
| *Internal ECM or sensor damage may occur if the circuit is shorted to B+ | |||