DTC B0020-13: Open or Increased Resistance in the Driver's Side Airbag Inflator
Special Tools Required:
SRS Inflator Simulator 07SAZ-TB4011A
SRS Simulator Lead L 070AZ-SNAA300
NOTE:
Before doing this troubleshooting procedure:
- Find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components of the correct part number, and that they were properly installed - Refer to: SRS Component Replacement/Inspection After Deployment (2015-17) or SRS Component Replacement/Inspection After Deployment (2018-19) .
- Review SRS Precautions and Procedures .
- Review General Troubleshooting Information (2015-17) or General Troubleshooting Information (2018-19)
- Review information pertaining to 12 Volt Battery Terminal Disconnection and Reconnection
- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software , and retest.
| DTC Description | DTC |
|---|---|
| B0020-13 Open or increased resistance in the driver's side airbag inflator |
DTC (SRS)
- Problem verification
-1. Clear the DTCs with the HDS.
- 2. Turn the vehicle to the ON mode, then wait for 10 seconds.
- 3. Check for DTCs with the HDS.
DTC Description DTC B0020-13 Open or increased resistance in the driver's side airbag inflator Is DTC B0020-13 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures - Refer to: How to Troubleshoot the SRS (2015-17) or How to Troubleshoot the SRS (2018-19) . If another DTC is indicated, troubleshoot the DTC.
- Driver's side airbag inflator check
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes.
- 3. Disconnect the driver's side airbag inflator 2P connector (A) on the right side wire harness.
- 4. Connect the terminals of SRS simulator lead L to the SRS inflator simulator (2 Ω connectors), then connect SRS simulator lead L to the driver's side airbag inflator 2P connector on the right side wire harness.
- 5. Reconnect the negative cable to the 12 volt battery.
- 6. Clear the DTCs with the HDS.
- 7. Turn the vehicle to the ON mode, then wait for 10 seconds.
- 8. Check for DTCs with the HDS.
DTC Description DTC B0020-13 Open or increased resistance in the driver's side airbag inflator Is DTC B0020-13 indicated?
YES
Go to step 3.
NO
Open in the driver's side airbag inflator; replace the driver's side airbag , then clear the DTC.
- Open wire check (LSA+, LSA- lines)
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes.
- 3. Disconnect the following connector.
SRS unit connector B (39P) - 4. Disconnect the SRS inflator simulator from SRS simulator lead L. Do not disconnect SRS simulator lead L from the driver's side airbag inflator 2P connector on the right side wire harness.
- 5. Measure the resistance of the test point.
Test condition Vehicle OFF (LOCK) mode Driver's side airbag inflator 2P connector (on the right side wire harness): disconnected SRS unit connector B (39P): disconnected Driver's side airbag inflator 2P connector (on the right side wire harness): connected to SRS simulator lead L Test point SRS simulator lead L black terminal Is there 1.0 Ω or less?
YES
The LSA+ and LSA- wires are OK. Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection; if the connection is OK, replace the SRS unit - Refer to: SRS Unit Removal and Installation (2015-17) or SRS Unit Removal and Installation (2018-19) . If the DTC does not clear, replace the right side wire harness.
NO
Open in the right side wire harness; replace the right side wire harness, then clear the DTC.