GM Service Manual Online
For 1990-2009 cars only

Passenger Presence System Scan Tool Data Parameters

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

Battery Voltage

--

Volts

This is the voltage input supplied to the passenger presence system.

Front Passenger Classification

--

Unknown

The scan tool displays Unknown, Child Seat Rearward, Child Seat Forward, Child Seat Unknown, Small Child, Large Child, Small Adult, Large Adult. This is the state of what occupies the passenger seat, as monitored by the passenger presence system.

Passenger Presence Detection Module Primary Key

--

Valid

The scan tool displays Unknown, Valid or Invalid. This is the state of the primary key programmed in the passenger presence system module.

Passenger Presence Detection Occupancy Status

--

Empty

The scan tool displays Unknown, Empty, Occupied, or Reserved. This is the state of the passenger seat if it is occupied or empty as monitored by the passenger presence system.

Passenger Presence Detection System Operating Mode

--

Field Mode

The scan tool displays Field Mode, Zero Set, Barrier Mode, or Initializing Mode. This is the status of the operating mode of the passenger presence system.

Passenger Presence Detection System Status

--

No Fault

The scan tool displays No Fault Present, Fault Present, or Vehicle Mismatch. This is the internal status of the passenger presence system module.

Passenger Seat Belt Status

--

Unbuckled

The scan tool displays Buckled or Unbuckled. This is the state of the seat belt switch in the seat belt buckle.

Power Mode

--

Accessory

The scan tool displays Off, Accessory, Run or Crank Request. This is the state of the ignition switch.