B0015
DTC B0015
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 provide an overview of each diagnostic category.
DTC Descriptors
DTC B0015 01
- Left Front Seat Belt Pretensioner Deployment Loop Short to Battery
DTC B0015 02
- Left Front Seat Belt Pretensioner Deployment Loop Short to Ground
DTC B0015 04
- Left Front Seat Belt Pretensioner Deployment Loop Open Circuit
DTC B0015 0D
- Left Front Seat Belt Pretensioner Deployment Loop Resistance Above Threshold
DTC B0015 0E
- Left Front Seat Belt Pretensioner Deployment Loop Resistance Below Threshold
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 - LF. 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 - LF connector which will short together both seat belt pretensioner - LF 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
B0015 01
The seat belt pretensioner - LF high and/or low circuit is short to voltage for 120 milliseconds.
B0015 02
The seat belt pretensioner - LF high and/or low circuit is short to ground for 120 milliseconds.
B0015 04
The seat belt pretensioner - LF high and/or low circuit is open for 120 milliseconds.
B0015 0D
The seat belt pretensioner - LF deployment loop resistance is more than 3.9 ohms for 120 milliseconds.
B0015 0E
The seat belt pretensioner - LF deployment loop resistance is less than 1.1 ohms for 120 milliseconds.
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.
Special Tools
Each inflatable restraint module requires a specific adapter to connect the load tool to the SIR system.
* J38715-A Driver and Passenger SIR Load Tool
* J-38715-30A SIR Load Tool Adapter
Circuit/System Verification
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
* The LF seat belt retractor pretensioner
* The SDM module
* The LF seat belt retractor pretensioner wiring harness connector
* The SDM wiring harness connector
1. Ignition OFF, disconnect the harness connector at the LF inflatable restraint seat belt pretensioner.
2. Use the J-38715-30A to connect the J38715-A to the harness side of the LF inflatable restraint seat belt pretensioner connector. Use the PASSENGER INFLATOR connector located on the load tool
3. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
• If DTC is not set or is set as history, replace the LF inflatable restraint seat belt pretensioner.
4. Ignition OFF, disconnect J-38715-30A and J38715-A.
5. Disconnect the harness connector at the SDM.
6. Ignition ON, test for less than 1-volt between the high control circuit terminal 2 and ground.
• If not within the specified range, test the circuit for a short to voltage.
7. Test for less than 1-volt between the low control circuit terminal 1 and ground.
• If not within the specified range, test the circuit for a short to voltage.
8. Ignition OFF, test for infinite resistance between the high control circuit terminal 2 and ground.
• If not within the specified range, test the circuit for a short to ground.
9. Test for infinite resistance between the applicable low control circuit terminal 1 and ground.
• If not within the specified range, test the circuit for a short to ground.
10. Test for less then 1 ohm between the LF inflatable restraint seat belt pretensioner terminal 1 and SDM terminal 53.
• If not within the specified range, test the circuit for an open/high resistance.
11. Test for less then 1 ohm between the LF inflatable restraint seat belt pretensioner terminal 2 and SDM terminal 52.
• If not within the specified range, test the circuit for an open/high resistance.
12. If all circuits test normal, replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests
* Seat Belt Retractor Pretensioner Replacement - Front (Coupe) Seat Belt Retractor Pretensioner Replacement - Front (Sedan) Seat Belt Retractor Pretensioner Replacement - Front (Convertible)
* SIR/SRS Wiring Repairs