DTC B0028-1A: Decreased Resistance in the Front Passenger's Side Airbag Inflator (2015-17)
Special Tools Required:
SRS Inflator Simulator 07SAZ-TB4011A
SRS Simulator Lead L 070AZ-SNAA300
SRS Short Canceller 070AZ-SAA0100
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 .
- Review SRS Precautions and Procedures .
- Review General Troubleshooting Information
- 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 |
|---|
| B0028-1A Decreased Resistance in the front passenger'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 B0028-1A Decreased Resistance in the front passenger's side airbag inflator Is DTC B0028-1A 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 . If another DTC is indicated, troubleshoot the DTC.
- Front passenger'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 front passenger'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 front passenger'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 B0028-1A Decreased Resistance in the front passenger's side airbag inflator Is DTC B0028-1A indicated?
YES
Go to step 3.
NO
Short to another wire in the front passenger's side airbag inflator; replace the front passenger's side airbag , then clear the DTC.
- Shorted wire check (RSA+ line to RSA- line)
-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 front passenger's side airbag inflator 2P connector on the right side wire harness.
- 5. Connect the SRS short canceller to SRS unit connector B (39P) terminals No. 3 and No. 4.
- 6. Measure the resistance of the test point.
Test condition Vehicle OFF (LOCK) mode Front passenger's side airbag inflator 2P connector (on the right side wire harness): disconnected SRS unit connector B (39P): disconnected Front passenger's side airbag inflator 2P connector (on the right side wire harness): connected to SRS simulator lead L SRS unit connector B (39P) No. 3 and No. 4: connected to SRS short canceller Test point SRS simulator lead L black terminal Is there an open circuit, or at least 1 MΩ?
YES
The RSA+ and RSA- 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 . If the DTC does not clear, replace the right side wire harness.
NO
Short to another wire in the right side wire harness; replace the right side wire harness, then clear the DTC.