DTC Troubleshooting: 21-3x (4D)
DTC Troubleshooting: 21-3x
| DTC 21-3x (21-30 to 21-39, 21-3A to 21-3F): | Short to Another Wire or Decreased Resistance in Left Side Seat Belt Tensioner |
Special Tools Required
SRS inflator simulator ( 07SAZ-TB4011A)
| 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 and is DTC 21-3x 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 left side seat belt tensioner 4P connector (A) from the floor wire harness. A07SAZ-TB4011A07XAZ-SZ30100 |
| 5. | Connect the SRS inflator simulator (2 W connectors) and the simulator lead to the floor wire harness. |
| 6. | Reconnect the battery negative cable. |
| 7. | Erase the DTC memory. |
| 8. | Read the DTC. Is DTC 21-3x indicated? YES - Go to 9. NO - Short in the left side seat belt tensioner; replace the left side seat belt.n |
| 9. | Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes. |
| 10. | Disconnect the right side seat belt tensioner 4P connector (A). A |
| 11. | Disconnect SRS unit connector B (28P) from the SRS unit. B |
| 12. | Disconnect the SRS inflator simulator from the SRS simulator lead F. |
| 13. | Check resistance between the terminals of the SRS simulator lead F. There should be an open circuit, or at least 1 MW. 07XAZ-SZ30100FLOOR WIRE HARNESS4P CONNECTOR 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 |