DTC A2-1x ("x" can be 0 thru 9 or A thru F): Faulty Power Supply (VB line)
- 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 (see COMPONENT REPLACEMENT/INSPECTION AFTER DEPLOYMENT ).
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures (see PRECAUTIONS AND PROCEDURES ), General Troubleshooting Information (see DTC (DIAGNOSTIC TROUBLE CODES) ), and 12 Volt Battery Terminal Disconnection and Reconnection (see 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 (see SRS UNIT UPDATE ) and retest.
- Clear the DTCs with the HDS (see HOW TO CLEAR DTCS ).
- Turn the ignition switch to ON (II), then wait for 10 seconds.
- Check for DTCs with the HDS (see HOW TO CLEAR DTCS
).
Is DTC A2-1x indicated?
YES -Go to step 4.
NO -Intermittent failure, the system is OK at this time. Go to TROUBLESHOOTING INTERMITTENT FAILURES . If another DTC is indicated, troubleshoot the DTC.
- Turn the ignition switch to LOCK (0).
- Check the No. B6 (10 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES -Go to step 6.
NO -Replace the fuse, then turn the ignition switch to ON (II). If the fuse blows again, check for a short to ground in the dashboard wire harness or in the under-dash fuse/relay box No. B6 (10 A) fuse circuit; 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.
- USA models (see REMOVAL AND INSTALLATION )
- Canada models (see CANADA MODELS )
- Turn the ignition switch to LOCK (0).
- Disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes.
- Disconnect SRS unit connector A (39P) from the SRS unit (see step 10 ).
- Reconnect the negative cable to the 12 volt battery.
- Turn the ignition switch to ON (II).
- Measure the voltage between body ground and SRS unit connector A (39P) terminal No. 22.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES -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 (see SRS UNIT REPLACEMENT ).
NO -Open in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.