| DTC 21-1x (21-10 to 21-19, 21-1A to 21-1F): | |
| DTC 21-2x (21-20 to 21-29, 21-2A to 21-2F): | |
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 21-1x or 21-2x 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. |
| 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 21-1x or 21-2x indicated? YES - Go to 9. NO - Open or increased resistance 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). |
| 11. | Disconnect SRS unit connector B (28P) from the SRS unit. Do not disconnect the special tool from floor wire harness. |
| 12. | Check resistance between the No. 1 terminal and the No. 2 terminal of SRS unit connector B (28P). There should be 2.0-3.0 W. Is the resistance as specified? YES - Faulty SRS unit or poor contact at SRS unit connector B (28P) and the SRS unit. Check the connection; if the connection is OK, replace the SRS unit.n NO - Open or increased resistance in the floor wire harness; replace the floor wire harness.n |