DTC Troubleshooting: 2-4

DTC 2-4:  Short to Power in Front Passenger's Airbag Inflator

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

SRS simulator lead C (  07TAZ-SZ5011A)

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 P1o connector from the P1i connector (1).


5.Connect the special tool (2 W connector) to the P1i connector.

6.Reconnect the battery negative cable.

7.Erase the DTC memory.

8.Read the DTC.

Is DTC 2-4 indicated?

YES - Go to 9.

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

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

10.Disconnect the D1o connector (1) from the D1i connector (2).


11.Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


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


13.Disconnect the special tool from the P1i connector.

14.Reconnect the battery negative cable.

15.Turn the ignition switch ON (II).

16.Check for voltage between the No. 5 terminal of the U1o connector and body ground, and between the No. 14 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 dashboard wire harness B; replace the dashboard wire harness B.n