B0098

DTC B0098

Diagnostic Instructions

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

DTC Descriptor
DTC B0098 52
- Passenger Air Bag Disable Switch Circuit Compare Failure

Diagnostic Fault Information





Circuit/System Description

The passenger air bag disable switch is ignition key operated to manually enable or disable the passenger instrument panel air bag. When the ignition is turned ON, ignition 1 voltage is supplied to the passenger air bag disable switch and based on the position of the switch either the passenger air bag disable switch signal circuit (ON) or the passenger air bag indicator control (OFF) circuit will be active to the inflatable restraint sensing and diagnostic module (SDM). The SDM will communicate to the instrument panel cluster (IPC) to illuminate the appropriate the ON/OFF indicator as well as enable or disable the deployment of the passenger instrument panel air bag. If a malfunction is detected, a DTC will be stored.

Conditions for Running the DTC

Ignition 1 voltage is between 9-16 volts.

Conditions for Setting the DTC

The SDM detects both the passenger air bag disable switch signal circuit (ON) and the passenger air bag indicator control (OFF) circuit active or inactive for 500 milliseconds.

Action Taken When the DTC Sets

The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.

Conditions for Clearing the DTC

* The condition for setting the DTC no longer exists.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Reference Information
Schematic Reference

SIR Schematics ([1][2]Air Bag Systems)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

SIR System Description and Operation (SIR System)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Circuit/System Testing

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


* Passenger air bag disable switch

* SDM

* Passenger air bag disable switch wiring harness connector

* SDM wiring harness connector


1. Ignition OFF, disconnect the harness connector at the passenger air bag disable switch.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal B and ground.

• If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance, if the circuit tests normal and the ignition fuse is open, test or replace the passenger air bag disable switch.

3. Verify that a test lamp illuminates between the passenger air bag disable switch signal control circuit terminal E and B+.

• If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the SDM.

4. Verify that a test lamp illuminates between the passenger air bag indicator control (OFF) circuit terminal A and B+.
5. If all circuits test normal, test or replace the passenger air bag disable switch.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* SIR/SRS Wiring Repairs (SIR/SRS Wiring Repairs)
* Instrument Panel Inflatable Restraint Module Switch Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for SDM replacement, setup, and programming