DTC Troubleshooting: 12-1x, 12-4x
|DTC 12-1x (12-10 to 12-19, 12-1A to 12-1F):||Open or Increased Resistance in Front Passenger's Airbag First Inflator (LHD type)|
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Special Tools Required
SRS inflator simulator ( 07SAZ-TB4011A)
SRS simulator lead J ( 070AZ-SNA0100)
|2.||Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.|
Does the SRS indicator stay on, and is DTC 12-1x, or 12-4x indicated?
YES - Go to 3.
NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, go to the DTC Troubleshooting Index.
|3.||Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes.|
|4.||Disconnect the front passenger's airbag 4P connector (A) from dashboard wire harness.|
|5.||Connect the SRS inflator simulator (2 W connectors) and simulator lead J to the dashboard wire harness.|
|6.||Reconnect the negative cable to the battery.|
|9.||Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes.|
|11.||Disconnect the SRS inflator simulator from the SRS simulator lead.|
|12.||Check resistance between the terminals of both SRS simulator leads. There should be 1 W or less.|
Is the resistance as specified?
YES - Faulty SRS unit or poor connection at SRS unit connector A (28P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit.n
NO - Open or increased resistance in the dashboard wire harness; replace the dashboard wire harness.n