DTC B0028-12: Short to Power in the Front Passenger'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 .
• Before doing this troubleshooting procedure, review SRS Precautions and Procedures , General Troubleshooting Information , and 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 (SRS)

• 1. 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
  B0028-12 Short to power in the front passenger's side airbag inflator

  Is DTC B0028-12 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.

• 2. 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 floor wire harness.

  Courtesy of HONDA, U.S.A., INC.

  - 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 floor 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
  B0028-12 Short to power in the front passenger's side airbag inflator

  Is DTC B0028-12 indicated?

  YES 

  Go to step 3.

  NO 

  Short to power in the front passenger's side airbag inflator; replace the front passenger's side airbag , then clear the DTC.

• 3. Shorted wire check (RSA+, RSA- lines to power):

  - 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 floor wire harness.

  - 5. Reconnect the negative cable to the 12 volt battery.

  - 6. Turn the vehicle to the ON mode.

  - 7. Measure the voltage between test points 1 and 2.

  Test condition	Vehicle ON mode
  	Front passenger's side airbag inflator 2P connector (on the floor wire harness): disconnected
  	SRS unit connector B (39P): disconnected
  	Front passenger's side airbag inflator 2P connector (on the floor wire harness): connected to SRS simulator lead L
  Test point 1	SRS simulator lead L black terminal
  Test point 2	Body ground

  Courtesy of HONDA, U.S.A., INC.

  Is there 0.2 V or less?

  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 . If the DTC does not clear, replace the floor wire harness.

  NO 

  Short to power in the floor wire harness; replace the floor wire harness, then clear the DTC.