B0057
DTC B0057, B0058, or B0059
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this 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 Descriptors
DTC B0057
- Right Front Pretensioner Deployment Loop Resistance Low
DTC B0058
- Right Front Pretensioner Deployment Loop Open
DTC B0059
- Right Front Pretensioner Deployment Loop Voltage Out of Range
Diagnostic Fault Information
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 seat belt pretensioner - RF. 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 used within the seat belt pretensioner - RF connector which will short together both seat belt pretensioner - RF high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B0057
The seat belt pretensioner - RF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
B0058
* Seat belt pretensioner - RF high circuit is less than 2.4 volts and the seat belt pretensioner - RF deployment loop is greater than 6 ohms for 500 milliseconds.
* Seat belt pretensioner - RF deployment loop resistance is greater than 4.8 ohms for 500 milliseconds.
B0059
* Seat belt pretensioner - RF high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
* Seat belt pretensioner - RF high circuit is less than 2.4 volts and seat belt pretensioner - RF deployment loop resistance is less than 6 ohms for 500 milliseconds.
Action Taken When the DTC Sets
* The SDM commands the AIR BAG indicator requests the instrument panel cluster (IPC) to illuminate.
* The SIR system is disabled and no deployments are allowed.
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
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 Control Module References for scan tool information
Special Tools
J 38715-A Driver/Passenger Load tool
Circuit/System Testing
Important: When removing the connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:
* Seat belt retractor pretensioner - RF
* SDM module
* Seat belt retractor pretensioner - RF wiring harness connector
* SDM wiring harness connector
1. Ignition OFF, disconnect the seat belt pretensioner - RF wiring harness connector located under the passenger front seat.
2. Use the J 38715-A to connect the harness side of the seat belt pretensioner - RF connector. Use the PASSENGER INFLATOR connector located on the load tool.
3. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0057, B0058, or B0059 is set current.
• If DTC B0057, B0058, or B0059 is history replace the seat belt pretensioner - RF.
4. Ignition OFF, disconnect and remove the J 38715-A .
5. Disconnect the SDM harness connector.
6. Test the high and low circuits between the SDM and seat belt pretensioner - RF for a short to voltage, short to ground, or open/low resistance. Verify that a short to voltage, short to ground, or open/low resistance does not exist.
• If any of the above conditions are found make the appropriate repair.
7. If all circuits test normal then replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* SIR/SRS Wiring Repairs SIR/SRS Wiring Repairs
* Seat Belt Retractor Pretensioner Replacement - Right Front Seat Belt Retractor Pretensioner Replacement - Right Front
* Control Module References Control Module References for SDM replacement, setup, and programming