DTC Troubleshooting: 4-3

DTC 4-3:  Short to Another Wire or Decreased Resistance in Right Side Seat Belt Tensioner

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

SRS simulator lead F (  07XAZ-SZ30100)
 


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?


YES - Go to 3.


NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures.


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

4.Disconnect the TR1o connector from the TR1i connector (A).

 

5.Connect the special tool (2 W connector) to the TR1i connector (A).

6.Reconnect the battery negative cable.

7.Erase the DTC memory.

8.Read the DTC.

Is DTC 4-3 indicated?


YES - Go to 9.


NO - Short in the right side seat belt tensioner; replace the right side seat belt.n


9.Disconnect the battery negative cable, and wait for 3 minutes.

10.Disconnect the TL1o connector (A) from the TL1i connector (B).

 

11.Disconnect the U2o connector (A) from the SRS unit.

 

12.Disconnect the SRS inflator simulator (special tool) from the SRS simulator lead C.

13.Check resistance between the A and B terminals of the SRS simulator lead C (special tool), and between the C and D terminals. There should be 1 MW or more.

 

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