83-21

SRS DTC Troubleshooting: 83-21

DTC 83-21:

No Signal From the Outer Side Front Passenger's Weight Sensor

NOTE:

- Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed Service and Repair.
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
- These SWS DTCs are cleared when you turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, then wait for 10 seconds.

3. Check for DTCs with the HDS.

Is DTC 83-21 indicated?

YES -

Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.

4. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.

Is an SWS DTC also indicated?

YES -

- DTC 21-11: Short to power in the front passenger's weight sensor (outer side) power circuit; go to step 5.
- DTC 21-12: Short to ground in the front passenger's weight sensor (outer side) power circuit; go to step 11.

NO -

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures.

5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

6. Disconnect the front passenger's seat wire harness 3P connector (A) from the front passenger's weight sensor (outer side).






7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

8. Clear the DTCs with the HDS.

9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, then wait for 10 seconds.

10. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.

Is SWS DTC 21-11 indicated?

YES -

Short to power in the front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC, and retest. If the DTC is still present, replace the ODS unit Service and Repair.

NO -

Faulty front passenger's weight sensor (outer side); replace the front passenger's seat frame/front passenger's weight sensors as an assembly Service and Repair, then clear the DTC.

11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

12. Disconnect the front passenger's seat wire harness 3P connector (A) from the front passenger's weight sensor (outer side).






13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

14. Clear the DTCs with the HDS.

15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, then wait for 10 seconds.

16. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.

Is SWS DTC 21-12 indicated?

YES -

Go to step 17.

NO -

Faulty front passenger's weight sensor (outer side); replace the front passenger's seat frame/front passenger's weight sensors as an assembly Service and Repair, then clear the DTC.

17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

18. Measure the resistance between front passenger's seat wire harness 3P connector terminal No. 3 and body ground. There should be an open circuit or at least 1 MOhms.





Is the resistance as specified?

YES -

Faulty ODS unit; replace the ODS unit Service and Repair, then clear the DTC.

NO -

Short to ground in the front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC.