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, and security data groups.

ABS/TCS Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

Park Brake Switch

On/Off

Traction Switch

On/Off

Switch Inputs Scan Tool Data List

Scan Tool Parameter

Units Displayed

A/C Request

Yes/No

Battery 1

Volts

Driver Door Switch

Release/Applied

High Blower Input

Volts

HVAC Afterblow

On/Off

HVAC Afterblow Feedback

High/Low

Key In Ignition

Yes/No

Low Brake Fluid

Yes/No

Low Coolant

Yes/No

Park (BTSI) Relay Command

High/Low

Park (BTSI) Relay Feedback

High/Low

Park Brake Switch

On/Off

Pass Door Switches

Release/Applied

Rear Defog Relay Command

On/Off

Rear Defog Relay Feedback

High/Low

Rear Defog Switch

On/Off

Exterior Lamps Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

DRL Relay Command

On/Off

DRL Relay Feedback

High/Low

High Beam Input

Volts

Low Beam Input

Volts

Park Lamp Switch

On/Off

Interior Lamps Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

Cargo Lamp On

On/Off

Dome Lamp Command

On/Off

Driver Door Switch

Release/Applied

I/P Dimmer Input

Volts

Inadvertent Load Monitor

On/Off

Key In Ignition

Yes/No

Pass Door Switches

Release/Applied

Door Locks Scan Tool Data List

Scan Tool Parameter

Units Displayed

All Door Unlock Feedback

High/Low

All Door Unlock Relay Command

On/Off

Battery 1

Volts

Driver Unlock Relay Command

On/Off

Driver Unlock Relay Feedback

High/Low

Lock All Relay Command

On/Off

Lock All Relay Feedback

High/Low

Pass Unlock Relay Feedback

High/Low

Trunk Release Solenoid Command

On/Off

Trunk Release Solenoid Feedback

High/Low

Security Data Scan Tool Data List

Scan Tool Parameter

Units Displayed

Accessory

High/Low

Auto-Learn Timer

Seconds

Battery 1

Volts

Horn Relay Command

On/Off

Horn Relay Feedback

High/Low

Ignition 1

High/Low

Lockout Timer

Seconds

Passlock Input

Volts

Passlock Power Command

On/Off

Passlock Power Feedback

High/Low

Security LED

On/Off/Flash

Seed and Key Timer

Seconds