DTC U3007-13: Faulty Power Supply (VB line) (2014-15)

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 were properly installed. Refer to: SRS Component Replacement/Inspection After Deployment
• 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
   U3007-13 Faulty power supply (VB line)

   Is DTC U3007-13 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.

2. Fuse check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Check the following fuse.

   Fuse	No. B24 (10 A)

   Location

   Under-dash fuse/relay box

   Is the fuse OK?

   YES 

   Go to step 3.

   NO 

   Replace the fuse, then turn the vehicle to the ON mode. If the fuse blows again, check for a short to ground in the under-dash fuse/relay box No. B24 (10 A) fuse circuit (dashboard wire harness); replace the dashboard wire harness, then clear the DTC, and retest. If the DTC is still present, replace the under-dash fuse/relay box , then clear the DTC.

3. Open wire check (VB line)

   -1. Disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes.

   - 2. Disconnect the following connector:

   SRS unit connector A (39P)

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

   - 4. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   	SRS unit connector A (39P): disconnected
   Test circuit	VB
   Test point 1	SRS unit connector A (39P) No. 38
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   The VB wire is OK. Faulty SRS unit or poor connection at SRS unit connector A (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 dashboard wire harness.

   NO 

   Open in the dashboard wire harness or faulty under-dash fuse/relay box; replace the dashboard wire harness or the under-dash fuse/relay box , then clear the DTC.