Service Information

Captiva

DTC B001B

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using the diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC B001B 01: Passenger Seat Belt Anchor Pretensioner Deployment Loop Short circuit to Battery

DTC B001B 02: Passenger Seat Belt Anchor Pretensioner Deployment Loop Short circuit to Ground

DTC B001B 04: Passenger Seat Belt Anchor Pretensioner Deployment Loop Open Circuit

DTC B001B 0D: Passenger Seat Belt Anchor Pretensioner Deployment Loop Resistance Above Threshold

DTC B001B 0E: Passenger Seat Belt Anchor Pretensioner Deployment Loop Resistance Below Threshold

Diagnostic Fault Information

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Passenger Seat Belt Anchor Pretensioner High Circuit	B001B 02	B001B 0D	B001B 04	B001B 01	B001B 0E
Passenger Seat Belt Anchor Pretensioner Low Circuit	B001B 02	B001B 0D	B001B 04	B001B 01	B001B 0E

Circuit/System Description

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the passenger seat belt anchor pretensioner. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. A shorting bar is used within the passenger seat belt anchor pretensioner connector which will short together both high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the air bag during servicing.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

B001B 01

The passenger seat belt anchor pretensioner high and/or low circuit is shorted to voltage.

B001B 02

The passenger seat belt anchor pretensioner high and/or low circuit is shorted to ground.

B001B 04

The passenger seat belt anchor pretensioner high and/or low circuit is open.

B001B 0D

The passenger seat belt anchor pretensioner deployment loop resistance is more than 3.54 ohms.

B001B 0E

The passenger seat belt anchor pretensioner deployment loop resistance is less than 1.77 ohms.

Action Taken When the DTC Sets

•	The SDM commands the AIR BAG indicator ON via serial data communications.

•	The SIR System is disabled and no deployments are allowed.

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 255 malfunction-free ignition cycles have occurred.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Circuit/System Testing

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

•	Passenger seat belt anchor pretensioner

•

SDM

•	Passenger seat belt anchor pretensioner wiring harness connector

•	SDM wiring harness connector

Ignition OFF, disconnect the passenger seat belt anchor pretensioner in-line connector.
Disconnect the SDM connector.
Test the high and low circuits between the SDM and passenger seat belt anchor pretensioner for a short to voltage, short to ground, short between circuits or open/high resistance. Verify that a short to voltage, short to ground, short between circuits or open/high resistance does not exist.

⇒	If any of the above conditions are found make the appropriate repair.

If all circuits test normal then replace the SDM.
Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B001B is set current.

⇒	Replace the passenger seat belt anchor pretensioner.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	Passenger seat belt anchor pretensioner

•	Control Module References for SDM replacement, setup, and programming