DTC Troubleshooting: 12-3x (RHD)

DTC Troubleshooting: 12-3x

DTC 12-3x (12-30 to 12-39, 12-3A to 12-3F):

Short to Another Wire or Decreased Resistance in Driver's Airbag Inflator (RHD)

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

SRS simulator lead C ( 07TAZ-SZ5011A)

SRS simulator lead F ( 07XAZ-SZ30100)

SRS short canceller ( 070AZ-SAA0100)

1.	Erase the DTC memory.

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 12-3x 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 battery negative cable, and wait for 3 minutes.

4.	Disconnect the driver's airbag 2P connector (A) from the cable reel. A07TAZ-SZ5011A07SAZ-TB4011A

5.	Connect the SRS inflator simulator (2 W connector) and simulator lead C to the cable reel.

6.	Reconnect the battery negative cable.

7.	Erase the DTC memory.

8.	Read the DTC. Is DTC 12-3x indicated? YES - Go to 9. NO - Short in the driver's airbag; replace the driver's airbag.n

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

10.	Disconnect the dashboard wire harness 4P connector (A) from the cable reel. A07SAZ-TB4011A07XAZ-SZ30100

11.	Connect the SRS inflator simulator (2 W connectors) and simulator lead F to the dashboard wire harness.

12.	Reconnect the battery negative cable.

13.	Erase the DTC memory.

14.	Read the DTC. Is DTC 12-3x indicated? YES - Go to 15. NO - Short in the cable reel; replace the cable reel.

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

16.	Disconnect SRS unit connector A (28P) from the SRS unit. A

17.	Disconnect the SRS inflator simulator from the SRS simulator lead F.

18.	Connect the SRS short canceller (070AZ-SAA0100) to No. 9 and No. 10 terminals of SRS unit connector A (28P).

19.	Check resistance between the terminals of the SRS simulator lead F. There should be an open circuit, or at least 1 MW. DASHBOARD WIRE HARNESS 4P CONNECTOR07XAZ-SZ30100 Is the resistance as specified? YES - Replace the the SRS unit.n NO - Replace the dashboard wire harness.n