Scan Tool Data List

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Use the Scan Tool Data Display Values and Definitions Information in order to assist in diagnosing the HVAC Control Module problems. Compare the vehicles actual scan tool data with the typical data display value table information. Use the data information in order to aid in understanding the nature of the problem when the vehicle does not match with the typical data display values.

The scan tool data values were taken from a known good vehicle under the following conditions:

The ignition switch is in the ON position.
The engine is running at idle.
The vehicle is in PARK.
The doors are closed.
The windows are closed.
The A/C is ON.
The ambient air temperatures are at 22-27°C (70-80°F).

Body Control Module (BCM)

Scan Tool Parameter	Data List	Units Displayed	Typical Data Value
Operating Conditions: Engine idling, A/C ON, ambient air temperature between 22-27°C (70-80°F)
Battery 1	HVAC Data	Volts	Battery Voltage
Low Coolant	Switch Inputs	Yes/No	No

Engine Control Module (ECM) - L61/2.2L

Scan Tool Parameter	Data List	Units Displayed	Typical Data Value
Operating Conditions: Engine idling, A/C ON, ambient air temperature between 22-27°C (70-80°F)
Fan Control 1 Command	General Info Outputs	On/Off	Varies
Fan Control 2 Command	General Info Outputs	On/Off	Varies
ECT	Inputs/Outputs/Idle Speed Control	C/F	C/F

Powertrain Control Module (PCM) - L66/3.5L

Scan Tool Parameter	Data List	Units Displayed	Typical Data Value
Operating Conditions: Engine idling, A/C ON, ambient air temperature between 22-27°C (70-80°F)
Fan Control 1 Command	General Info Outputs	On/Off	Varies
Fan Control 2 Command	General Info Outputs	On/Off	Varies
ECT	Inputs/Outputs/Idle Speed Control	C/F	C/F