Rollover Sensor - ROS

DTC B1001 (Roll Over Sensor - ROS)

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

DTC Descriptor
DTC B1001 00: Option Configuration Error

Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) stores a 4-digit primary key for the inflatable restraint vehicle roll over sensor (ROS). The Sensing and Diagnostic Module - SDM sends the Roll Over Sensor - ROS the primary key. If the Roll Over Sensor - ROS determines that it is the wrong primary key, the Roll Over Sensor - ROS will set DTC B1001 and send the Sensing and Diagnostic Module - SDM a vehicle mismatch message. The SDM then will set DTC B0090 3A and illuminate the SIR Warning Indicator. The Roll Over Sensor - ROS does not use a secondary key.

Conditions for Running the DTC
Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC
The 4-digit primary key stored in the Sensing and Diagnostic Module - SDM does not match the 4-digit key stored in the Roll Over Sensor - ROS.

Action Taken When the DTC Sets
• The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
• The Sensing and Diagnostic Module - SDM disables all roll over related deployments.

Conditions for Clearing the DTC
The 4-digit Primary Key in the Sensing and Diagnostic Module - SDM and in the Roll Over Sensor - ROS match.

Diagnostic Aids
This DTC is an indication that the Roll Over Sensor - ROS was not set-up correctly, is not the correct part number or that the Roll Over Sensor - ROS is defective.

Reference Information

Schematic Reference
SIR Schematics [1][2]Air Bag Systems

Connector End View Reference
Component Connector End Views Connector Views

Description and Operation
SIR System Description and Operation Description and Operation

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

Scan Tool Reference
Control Module References for scan tool information. Control Module References

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.

• ROS
• ROS wiring harness

1. Verify the correct ROS part number has been installed
- If the wrong ROS part number was installed, replace with the correct ROS.

2. Verify that DTC B1001 is not set in the Roll Over Sensor - ROS.
- If DTC is set, perform the Setup New Roll Over Sensor - ROS procedure. If DTC resets replace the Roll Over Sensor - ROS.

Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests
• SIR/SRS Wiring Repairs. Wiring Repairs
• Control Module References for ROS replacement, setup, and programming. Control Module References