Rollover Sensor (ROS)

DTC B1001 (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.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

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 rollover sensor (ROS). The SDM sends the ROS the primary key. If the ROS determines that it is the wrong primary key, the ROS will set DTC B1001 and send the SDM a vehicle mismatch message. The SDM then will set DTC B0090 3A and turn the SIR Warning Indicator ON. The 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 SDM does not match the 4-digit key stored in the ROS.

Action Taken When the DTC Sets

* The SDM commands the AIR BAG indicator ON.
* The SDM disables all rollover related deployments.

Conditions for Clearing the DTC

The 4-digit Primary Key in the SDM and in the ROS match.

Diagnostic Aids

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

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 ROS.

• If DTC is set, perform the Setup New ROS procedure. If DTC resets replace the ROS.

Repair Instructions

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

* SIR/SRS Wiring Repairs