DTC B0001-1A: Decreased Resistance In The Driver's Airbag First Inflator (2014 2015)

Special Tools Required 

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 .
• 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
   B0001-1A: Decreased resistance in the driver's airbag first inflator

   Is DTC B0001-1A 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 . If another DTC is indicated, troubleshoot the DTC.

2. Driver's 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. Remove the driver's airbag.

   - 4. Disconnect the driver's airbag first inflator 2P connector (A) on the cable reel harness.

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

   - 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
   B0001-1A: Decreased resistance in the driver's airbag first inflator

   Is DTC B0001-1A indicated?

   YES 

   Go to step 3.

   NO 

   Faulty driver's airbag first inflator; REPLACE THE DRIVER'S AIRBAG , then clear the DTC.

3. Cable reel 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. Remove the column covers.

   - 4. Disconnect cable reel connector B (4P) on the dashboard wire harness.

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

   - 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
   B0001-1A Decreased resistance in the driver's airbag first inflator

   Is DTC B0001-1A indicated?

   YES 

   Go to step 4.

   NO 

   Short to another wire in the cable reel; REPLACE THE CABLE REEL , then clear the DTC.

4. Shorted wire check (LA1+ line to LA1- 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 A (39P)

   - 4. Connect the SRS short canceller to SRS unit connector A (39P) terminals No. 8 and No. 9.

   - 5. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Driver's airbag first inflator 2P connector (on the cable reel harness): disconnected
   	Cable reel connector B (4P) (on the dashboard wire harness): disconnected
   	SRS unit connector A (39P): disconnected
   	SRS unit connector A (39P) No. 8 and No. 9: connected to SRS short canceller
   Test circuit	LA1+, LA1-
   Test point 1	SRS unit connector A (39P) No. 8
   Test point 2	SRS unit connector A (39P) No. 9

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

   Is there an open circuit, or at least 1 MΩ?

   YES 

   The LA1+ and LA1- wires are OK. REPLACE THE SRS UNIT .

   NO 

   Short to another wire in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.