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

The SIR scan tool data list and PPS scan tool data list contain the restraint system related parameters that are available on the scan tool. The column, Data List, indicates the location of the parameter within the scan tool menu selections.

Use the SIR scan tool data list as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all of the diagnostic procedures with the Diagnostic System Check - Vehicle . Use the Scan Tool Data Lists after the following is determined:

    • A diagnostic directs the use of the Data List.
    • There is no published diagnostic trouble code (DTC) procedure nor published symptom procedure for the customer concern.
    • The DTC or symptom diagnostic procedure indicated by the diagnostic system check does not resolve the customer concern.

The typical data values are obtained from a properly operating vehicle under the conditions specified in the second row of the scan tool data list table. Comparison of the parameter values from the suspect vehicle with the typical data values may reveal the source of the customer concern.

SIR Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Driver Seat Belt Buckled/Passenger Seat Belt Unbuckled

Battery Voltage Signal

Data

Volts

Varies

Run/Crank

Data

Active/Inactive

Inactive

SIR Warning Indicator

Data

On/Off

Off

Driver Seat Belt Type

Sensor Data

Switch/Sensor

Switch

Psgr. Seat Belt Type

Sensor Data

Switch/Sensor

Sensor

Psgr. Seat Belt Sensor

Sensor Data

mA

Varies

Driver Seat Belt Switch

Sensor Data

Unbuckled/Buckled

Buckled

Passenger Seat Belt Switch

Sensor Data

Unbuckled/Buckled

Unbuckled

Driver Seat Position Sensor

Sensor Data

Forward/Rearward

Varies

Psgr. Seat Position Sensor

Sensor Data

Forward/Rearward

Varies

Primary Key Status

Key Identification

Unknown/Valid/Invalid

Valid

SDM Primary Key

Key Identification

4-digit number

Varies

Received Primary Key

Key Identification

4-digit number

Varies

Secondary Key Status

Key Identification

Unknown/Valid/Invalid

Valid

Received VIN Digits 2-5

Key Identification

4-digit number

Varies

Received VIN Digits 6-7

Key Identification

2-digit number

Varies

Passenger Presence System Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Driver Seat Belt Buckled/Passenger Seat Belt Unbuckled

Battery Voltage Signal

Data

Volts

Varies

Power Mode

Data

Off/Accessory/Run/Crank Request

Inactive

PPS Fault Status

Data

No Fault/ Plant Mode/Fault/Mismatch

No Fault

SDM Enable Status

Data

Enabled/Disabled

Enabled

PPS Enable Status

Data

Enabled/Disabled

Disabled

Passenger Classification

Data

Unknown/Calibrating/Empty Seat/Small/Large/Re-Zero

Empty Seat

Passenger Status

Data

No Info./Valid/Invalid Class./Invalid Pos./Invalid Data/Inval. Class&Pos

Varies

Pressure Sensor

Data

Volts

Varies

Seat Belt Tension Sensor

Data

Volts

Varies

Primary Key Status

Key Identification

Unknown/Valid/Invalid

Valid

PPS Primary Key

Key Identification

4-digit number

Varies

Received Primary Key

Key Identification

4-digit number

Varies