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 C (  07TAZ-SZ5011A)
 
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 (1).

 

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

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 T2o connector (1) from the T2i connector (2).

 

11.Connect the special tool (2 W connectors) to the T2i connector.

12.Reconnect the battery negative cable.

13.Erase the DTC memory.

14.Read the DTC.

Is DTC 4-3 indicated?


YES - Go to 15.


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


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

16.Disconnect the D1o connector (1), P1o connector (2), and TL1i connector (3).

 

17.Disconnect the U1o connector (1) from the SRS unit (A).

 

18.Disconnect the special tool from the T2i connector.

19.Check resistance between the No. 9 terminal and the No. 18 terminal of U1o connector. There should be 1 MW or more.

 

Is the resistance as specified?


YES - Faulty  SRS unit; replace the SRS unit.n


NO - Short in dashboard wire harness B; replace dashboard wire harness B.n