DTC Troubleshooting: 25-3x

DTC 25-3x (25-30 to 25-39, 25-3A to 25-3F):Short to Another Wire or Decreased Resistance in Left Side Seat Belt Outer Lap Tensioner

Special Tools Required
SRS inflator simulator (  07SAZ-TB4011A)
 

SRS simulator lead M (  070AZ-SNA0400)
 


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 25-3x 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 for troubleshooting details.


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 seat belt outer lap tensioner.

 

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 25-3x indicated?


YES - Go to 9.


NO - Short in the left side seat belt outer lap tensioner; replace the left side seat belt.n


9.Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes.

10.Disconnect the 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.Check resistance between each terminal 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; replace the SRS unit.n


NO - Short in the floor wire harness; replace the floor wire harness.n