DTC Troubleshooting: 11-4, 12-4

DTC 12-4:  Short to Power in Front Passenger's Side Airbag Inflator (With OPDS unit model)
DTC 11-4:  Short to Power in Left Side Airbag Inflator (Without OPDS unit model)

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

SRS simulator lead E (  07XAZ-S1A0200)
 


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 SPi connector (1) from the front passenger's (left) side airbag (A).

 

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

6.Reconnect the battery negative cable.

7.Erase the DTC memory.

8.Read the DTC.

Is DTC 12-4 or DTC 11-4 indicated?


YES - Go to 9.


NO - Short to power in the front passenger's (left) side airbag inflator; replace the front passenger's (left) side airbag.n


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

10.Disconnect the SDo connector (1).

 

11.Disconnect the U2o connector (1) from the SRS unit (A).

 

12.Turn the ignition switch ON (II).

13.Check for voltage between the No. 8 terminal of U2o connector and body ground, and between the No. 18 terminal and body ground. There should be 0.5 V or less.

 

Is the voltage as specified?


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


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