DTC Troubleshooting: 21-3x
|DTC 21-3x (21-30 to 21-39, 21-3A to 21-3F):||Short to Another Wire or Decreased Resistance in Left Side Seat Belt Tensioner|
Special Tools Required
SRS inflator simulator ( 07SAZ-TB4011A)
|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 21-3x 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 battery negative cable, and wait for 3 minutes.|
|4.||Disconnect the left side seat belt tensioner 2P connector (A) from the floor wire harness.|
|5.||Connect the SRS inflator simulator (2 W connectors) and simulator lead C to the floor wire harness.|
|6.||Reconnect the battery negative cable.|
|7.||Erase the DTC memory.|
|8.||Read the DTC.|
Is DTC 21-3x indicated?
YES - Go to 9.
NO - Short in the left side seat belt tensioner; replace the left seat belt.n
|9.||Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.|
|10.||Disconnect the right side seat belt tensioner connector.|
|11.||Disconnect SRS unit connector B (28P) from the SRS unit.|
|12.||Disconnect the simulator lead from the floor wire harness.|
|13.||Check resistance between the No. 1 and the No. 2 terminals of SRS unit conncetor B (28P). There should be an open circuit or at least 1 MW.|
Is the resistance as specified?
YES - Faulty SRS unit or poor contact 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