GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On, Engine Off

Driver Door Ajar Switch

Lamp Status

On/Off

Off

DRL Relay

Lamp Status

On/Off

Off

Fog Lamp Relay

Lamp Status

On/Off

Off

Fog Lamp Switch

Lamp Status

On/Off

Off

High Beam Feedback

Lamp Status

Volts

12.00 Volts

Inadvert. Power Output

Lamp Status

On/Off

On

Interior Lamp Output

Lamp Status

On/Off

Off

Low Beam Feedback

Lamp Status

Volts

12.00 Volts

Park Lamp Input

Lamp Status

On/Off

Off

Passenger Door Ajar Switch

Lamp Status

On/Off

Off