GM Service Manual Online
For 1990-2009 cars only

The SIR scan tool data list contains all the restraint system related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. 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 diagnostic procedures with the SIR diagnostic system check. Use the SIR scan tool data list after the following is determined:

    • There is no published DTC procedure nor published symptom procedure for the customer concern.
    • The DTC or symptom diagnostic procedure indicated by the SIR 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 first 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.

Ignition ON/Engine OFF/Driver Seat Belt Buckled/Passenger Seat Belt Buckled

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Driver Side Belt Status

Data

Buckled/Unbuckled

Buckled

Driver Side Loop Status

Data

Volts

2-6 Volts

Ignition Voltage

Data

Volts

12 Volts

Passenger Side Loop Status

Data

Volts

2-6 Volts

Warning Lamp Cycles

Data

Cycles

Varies

Warning Lamp ON

Data

Minutes

Varies