GM Service Manual Online
For 1990-2009 cars only

The following table lists the parameters displayed by the scan tool. The parameters are displayed by ABS/TCS data, switch inputs, exterior lamps, interior lamps, door locks, wiper/washer, and security data groups.

Scan Tool Displays

Parameter

Unit

ABS/TCS Data

Battery 1

Volts

Traction Active

Yes/No

Traction Control Status

On/Off

ABS Fault

Yes/No

Traction LED Command

On/Off

Traction LED Feedback

High/Low

Park Brake Switch

On/Off

Switch Inputs

Battery 1

Volts

Driver Door Switch

High/Low

Passenger Door Switches

High/Low

Key In Ignition

Yes/No

Decklid Ajar Switch

High/Low

Oil Life Reset Switch

High/Low

Park Brake Switch

On/Off

Low Coolant

Yes/No

Low Brake Fluid

Yes/No

A/C Request

Yes/No

High Beam Input = Off

Yes/No

High Beam Input = DRL

Yes/No

High Beam Input = High

Yes/No

Low Beam Switch

On/Off

Park Lamp Switch

On/Off

Lock Switch

On/Off

Unlock Switch

On/Off

Front Wiper Switch

On/Off

Rear Wiper Switch

On/Off

Rear Defog Switch

On/Off

Rear Defog Relay Command

On/Off

Rear Defog Relay Feedback

High/Low

Shifter Unlock Command

On/Off

Shifter Unlock Feedback

High/Low

Exterior Lamps

Battery 1

Volts

High Beam Input

Volts

High Beam Input = Off

Yes/No

High Beam Input = DRL

Yes/No

High Beam Input = High

Yes/No

Low Beam Switch

On/Off

Park Lamp Switch

On/Off

DRL Relay Command

On/Off

DRL Relay Feedback

High/Low

Interior Lamps

Battery 1

Volts

Inadvertent Lamp Power Command

On/Off

Inadvertent Lamp Power Feedback

High/Low

Dome Lamp Command

On/Off

Dome Lamp Feedback

High/Low

Driver Door Switch

High/Low

Pass Door Switches

High/Low

Key In Ignition

Yes/No

Instrument Panel Dimmer Input

Volts

I/P Dimmer Output

% DC

Door Locks

Battery 1

Volts

Driver Unlock Relay Command

On/Off

Driver Unlock Relay Feedback

High/Low

Pass Unlock Relay Command

On/Off

Pass Unlock Relay Feedback

High/Low

Lock All Relay Command

On/Off

Lock All Relay Feedback

High/Low

Remote Lock Command

Yes/No

Remote Unlock Command

Yes/No

Remote Panic Command

Yes/No

Remote Trunk Command

Yes/No

Remote Programmed

Yes/No

Lock Switch

On/Off

Unlock Switch

On/Off

Trunk Release Switch

On/Off

Trunk Release Solenoid Feedback

High/Low

Trunk Release Solenoid Command

On/Off

Wiper/Washer

Battery 1

Volts

Wiper Delay Input

Volts

Wiper Delay 1

Yes/No

Wiper Delay 2

Yes/No

Wiper Delay 3

Yes/No

Front Wiper Switch

On/Off

Front Wiper Relay Command

On/Off

Front Wiper Relay Feedback

High/Low

Rear Wiper Switch

On/Off

Rear Wiper Relay Command

On/Off

Rear Wiper Relay Feedback

High/Low

Front Washer Motor Input

On/Off

Rear Washer Motor Input

On/Off

Washer Fluid Level

Low/OK

Security Data

Battery 1

Volts

Ignition 1 Input

High/Low

Accessory

High/Low

Passlock Input

Volts

Passlock Power Feedback

High/Low

Key Learned

Yes/No

Key Learned Enabled

Yes/No

Security LED

On/Off/Flash

Horn Relay Command

On/Off

Horn Relay Feedback

High/Low

Passlock Timer

Seconds

Auto-Learn Timer

Seconds

Decklid Ajar Switch

Low/High

Trunk Release Switch

On/Off