DTC Troubleshooting: 31-3x
|DTC 31-3x (31-30 to 31-39, 31-3A to 31-3F):||Short to Another Wire or Decreased Resistance in Left Side Airbag Inflator|
Special Tools Required
SRS inflator simulator ( 07SAZ-TB4011A)
SRS short canceller ( 070AZ-SAA0100)
|1.||Erase the DTC memory.|
|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 31-3x 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 floor wire harness 2P connector (A) from the left side airbag (B).|
|5.||Connect the SRS inflator simulator (2 W connector) and simulator lead M to the floor wire harness.|
|6.||Reconnect the negative cable to the battery.|
|7.||Erase the DTC memory.|
|8.||Read the DTC.|
Is DTC 31-3x indicated?
YES - Go to 9.
NO - Short to another wire in the left side airbag inflator; replace the left side airbag.n
|9.||Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes.|
|10.||Disconnect both seat belt tensioner 4P connectors.|
|11.||Disconnect SRS unit connector B (28P) from the SRS unit.|
|12.||Disconnect the SRS inflator simulator from the SRS simulator lead.|
|13.||Connect the SRS short canceller (070AZ-SAA0100) to the No. 17 and No. 18 terminals of SRS unit connector B (28P).|
|14.||Check resistance between the terminals of the SRS simulator lead. There should be an open circuit or at least 1 MW.|
Is the resistance as specified?
YES - Faulty SRS unit or poor connection at SRS unit connector B (28P) and the SRS unit. Check the connection; if the connection is OK, replace the SRS unit.n
NO - Short in the floor wire harness; replace the floor wire harness.n