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 of the diagnostic procedures with the SIR Diagnostic System Check. Use the SIR Scan Tool Data List after the following are determined:

    • There is no published 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 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.

SIR Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Driver Seat Belt Buckled

Driver Seat Belt Switch

SIR

Buckled/Unbuckled

Buckled

Ignition Status

Occupant Classification System

On/Off

On

LF Sensor Range Information

Occupant Classification System

OK/Not OK

OK

LF Sensor Voltage

Occupant Classification System

Volts

Varies

LF Sensor Weight Information

Occupant Classification System

lbs.

Varies

LR Sensor Range Information

Occupant Classification System

OK/Not OK

OK

LR Sensor Voltage

Occupant Classification System

Volts

Varies

LR Sensor Weight Information

Occupant Classification System

lbs.

Varies

Number of DTCs

Occupant Classification System

number

Varies

Occupant Detection Sensor Status

SIR

Occupant Classification System

Child/No Occupant/Avg Male/Avg Female

No Occupant

Passenger Classification

Occupant Classification System

Child/Off/Child Restraint/Avg Male/Avg Female

Off

Passenger Seat Belt Switch

SIR

Occupant Classification System

Buckled/Unbuckled

Unbuckled

RF Sensor Range Information

Occupant Classification System

OK/Not OK

OK

RF Sensor Voltage

Occupant Classification System

Volts

Varies

RF Sensor Weight Information

Occupant Classification System

lbs.

Varies

RR Sensor Range Information

Occupant Classification System

OK/Not OK

OK

RR Sensor Voltage

Occupant Classification System

Volts

Varies

RR Sensor Weight Information

Occupant Classification System

lbs.

Varies

Sensor Range Information

Occupant Classification System

OK/Not OK

OK

Total Weight Information

Occupant Classification System

lbs.

Varies