GM Service Manual Online
For 1990-2009 cars only
Table 1: Passenger Presence System Scan Tool Data Parameters
Table 2: Passenger Presence System Scan Tool Output Controls

Passenger Presence System Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON

Battery Voltage

--

Varies

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

Passenger Classification

--

Empty

The scan tool displays Unknown, Calibrating, Empty Seat, Small 1, Small 2, Large or Preload. This is the state of the passenger seat, as monitored by the passenger presence system.

Passenger Status

--

No Info

The scan tool displays No Info., Valid, Invalid Class, Invalid Pos., Invalid Data or Inval. Class & Pos.

Power Mode

--

Run

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

PPS Enable Status

--

Enabled

The scan tool displays Disabled or Enabled. This is the status of the PPS Enable.

PPS Fault Status

--

No Fault

The scan tool displays No Fault, Plant Mode, Fault, Mismatch or Barrier. This is the status of the PPS Fault monitor.

PPS Primary Key

--

Varies

The scan tool displays the PPS primary key.

Pressure Sensor

--

Varies

This displays volts. This monitors the pressure.

Primary Key Status

--

Unknown

The scan tool displays Unknown, Valid and Invalid. This is the state of the primary key.

Received Primary Key

--

Varies

The scan tool displays the primary key received.

SDM Enable Status

--

Enabled

The scan tool displays Enabled or Disabled. This is the state of the SDM.

Seat Belt Tension Sensor.

--

Varies

This displays volts. This monitors the tension of the seat belt.


Passenger Presence System Scan Tool Output Controls

Output Control

Description

Re-Zero Passenger Presence System

The Passenger Presence System (PPS) is a calibrated system that requires rezeroing anytime the seat cushion trim attachments have been removed or the PPS has been replaced.