A4-1x

SRS DTC Troubleshooting: A4-1x

DTC A4-1x ("x" can be 0 thru 9 or A thru F):

SRS Unit Connector B Not Properly Installed

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 Service and Repair.
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair, General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes, and Battery Terminal Disconnection and Reconnection Procedures.
- 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 Testing and Inspection, and retest.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC A4-1x 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.

4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

5. Disconnect the negative cable from the battery, then wait at least 3 minutes.

6. Check the connection between SRS unit connector B (39P) and the SRS unit.

Is the connection OK?

YES -

Go to step 7.

NO -

Repair the poor connector connection, then clear the DTC, and retest. If DTC A4-1x is still present, go to step 7.

7. Disconnect SRS unit connector B (39P) from the SRS unit.

8. Check for bent or damaged terminals on the SRS unit.

Are any terminals bent or damaged?

YES -

Replace the SRS unit Service and Repair.

NO -

Replace the floor wire harness, then clear the DTC.