DTC B0020-13 (2017 2018 2019 2020)
DTC B0020-13 : Open or Increased Resistance in the the Driver's Side Airbag Inflator
Special Tools Required
-SRS Inflator Simulator 07SAZ-TB4011A
-SRS Simulator Lead K 070AZ-SNAA200
- 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 were properly installed .
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures , General Troubleshooting Information , and Battery Terminal Disconnection and Reconnection. - Refer to: Battery Terminal Disconnection and Reconnection (2016 2017 2018 2019 2020) .
| 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. 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 battery, then wait at least 3 minutes.
- 3. Disconnect the driver's side airbag inflator 4P connector (A) on the floor wire harness.
- 4. Connect the terminals of SRS simulator lead K to the SRS inflator simulator (2 Ω connectors), then connect SRS simulator lead K to the driver's side airbag inflator 4P connector on the floor wire harness.
- 5. Reconnect the negative cable to the 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 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 K. Do not disconnect SRS simulator lead K from the driver's side airbag inflator 4P connector on the floor wire harness.
- 5. Measure the resistance of the test point.
Test condition Vehicle OFF (LOCK) mode Driver's side airbag inflator 4P connector (on the floor wire harness): disconnected SRS unit connector B (39P): disconnected Driver's side airbag inflator 4P connector (on the floor wire harness): connected to SRS simulator lead K Test point SRS simulator lead K 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 (2017 2018 2019 2020), . If the DTC does not clear, replace the floor wire harness.
NO
Open in the floor wire harness; replace the floor wire harness, then clear the DTC.