For 1990-2009 cars

Table 1: | Exterior Lamps
Table 2: | Interior Lamps
Table 3: | Switch Inputs

#### Exterior Lamps

Scan Tool Parameter | Units Displayed | Typical Data Value
--- | --- | ---
Ignition On, Engine Off
Ambient Light Sensor | Volts | 0.4-4 volts
Battery 1 | Volts | Battery Voltage
DRL Relay Command | On/Off | On when requested
DRL Relay Feedback | High/Low | Low when requested
Fog Lamp Relay Cmd. | On/Off | On when requested
Fog Lamp Relay Fdbk. | High/Low | Low when requested
Fog Lamp Switch | On/Off | On when requested
High Beam Switch | On/Off | On when requested
Low Beam Input | Volts | 0.4 volts - Battery Voltage
Low Beam Input = Off | Yes/No | Yes when Low Beams requested
Low Beam Input = DRL | Yes/No | Yes when DRL requested
Low Beam Input = High | Yes/No | No when Low Beams requested
Parklamp Switch | On/Off | On when Park Lamps requested

#### Interior Lamps

Scan Tool Parameter | Units Displayed | Typical Data Value
--- | --- | ---
Ignition On, Engine Off
Battery 1 | Volts | Battery Voltage
Dome Lamp Command | On/Off | On when Dome requested
Dome Lamp Feedback | High/Low | Low when Dome requested
Driver Door Switch | High/Low | Low with Driver Door Open
Inadvertent Power Cmd. | On/Off | On
Inadvertent Power Fdbk. | High/Low | High when On
Key In Ignition | Yes/No | Yes
Pass Door Switches | High/Low | Low with any Door Open

#### Switch Inputs

Scan Tool Parameter | Units Displayed | Typical Data Value
--- | --- | ---
Ignition On, Engine Off
Liftgate Ajar Switch | High/Low | Low with Liftgate Open
Park Brake Switch | On/Off | Off