GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC B0098

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B0098: Passenger Presence System Configuration Error

Circuit/System Description

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. When the SDM has completed the power-up mode, the SDM will establish communication with the Passenger Presence System (PPS). The PPS will respond by illuminating both of the PASSENGER AIR BAG ON/OFF indicators for 5 seconds. The SDM will then transmit a request message to the PPS to receive the PPS verification ID. The PPS will transmit the verification ID to the SDM, and the SDM will compare the ID received to data stored in memory. If the data stored in memory does not match the information transmitted by the PPS, the SDM will set DTC B0098 and illuminate the AIR BAG indicator.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

The SDM has received an incorrect PPS verification ID.

Action Taken When the DTC Sets
    • The SDM will disable the instrument panel (I/P) module deployment loop.
    • The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
    • The PPS will illuminate the PASSENGER AIR BAG OFF indicator.

Conditions for Clearing the DTC
    • The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
    • A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aids

DTC B0098 is an indication that the SDM has received an incorrect PPS verification ID. The SDM will continue to request the verification ID from the PPS for 5 seconds. If the SDM does not receive the correct verification ID from the PPS within 5 seconds, the SDM will set DTC B0098 as current, illuminate the AIR BAG indicator. If either the SDM or PPS were replaced verify that the correct part numbers were used for the vehicle application.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

SIR System Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

    Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

       • PPS module
       • SDM module
       • PPS wiring harness connector
       • SDM wiring harness connector

  1. Check to see if the PPS was replaced. Verify the correct PPS was installed.
    2. ⇒If the wrong PPS was installed, replace with the correct PPS.
  2. Check to see if the SDM was replaced. Verify the correct SDM was installed.
    3. ⇒If the wrong SDM was installed, replace with the correct SDM.
  3. Check to see if DTC B1001 is set. Verify DTC B1001 is not set.
    4. ⇒If DTC B1001 is current, refer to DTC B1001 .
  4. Replace the PPS. Ignition ON, use the scan tool to clear the DTCs then recheck for DTC B0098. Verify DTC B0098 does not set.
    5. ⇒If DTC B0098 resets then replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  SIR/SRS Wiring Repairs
    •  Control Module References for PPS and SDM replacement, setup, and programming