83-26
SRS DTC Troubleshooting: 83-26
DTC 83-26:
No Signal From the Front Passenger's Weight Sensor (rear outer side)
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 Precautions and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
- These SWS DTCs are cleared when you turn the ignition switch to LOCK (0).
1. Raise the front passenger's seat all the way up.
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to ON (II), then wait for 10 seconds.
4. Check for DTCs with the HDS.
Is DTC 83-26 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, troubleshoot the DTC.
5. 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 26-11: Short to power in front passenger's weight sensor (rear outer side) power circuit; replace the front passenger's seat wire harness, then clear the DTC.
- DTC 26-12: Short to ground in the front passenger's weight sensor (rear outer side) power circuit. Go to step 6.
- DTC 26-13: Open in the front passenger's weight sensor (rear outer side) output circuit. Go to step 19.
- DTC 26-14: Short to ground in the front passenger's weight sensor (rear outer side) output circuit. Go to step 33.
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, troubleshoot the DTC.
6. Turn the ignition switch to LOCK (0).
7. Disconnect the front passenger's weight sensor (rear outer side) 3P connector (A) on the front passenger's seat wire harness.
8. Turn the ignition switch to ON (II).
9. Clear the DTCs with the HDS.
10. Turn the ignition switch to ON (II), then wait for 10 seconds.
11. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.
Is SWS DTC 26-12 indicated?
YES -
Go to step 12.
NO -
Faulty front passenger's weight sensor (rear outer side); replace the front passenger's seat rail including all four front passenger's weight sensors Service and Repair, then clear the DTC.
12. Turn the ignition switch to LOCK (0).
13. Release the hook, and unzip the seat-cover from behind the seat-back.
14. Turn over the seat-back cover/pad to gain access to the ODS unit.
15. Remove the cover from the ODS unit.
16. Disconnect the ODS unit 18P connector (A) from the ODS unit.
17. Measure the resistance between ODS unit 18P connector terminal No. 2 and body ground. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES -
Go to step 18.
NO -
Short to ground in the front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC.
18. Measure the resistance between ODS unit 18P connector terminals No. 2 and No. 14. 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 another wire in the front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC.
19. Turn the ignition switch to LOCK (0).
20. Swap the connections between the rear outer side front passenger's weight sensor and the front outer side sensor.
21. Turn the ignition switch to ON (II).
22. Clear the DTCs with the HDS.
23. Turn the ignition switch to ON (II), then wait for 10 seconds.
24. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.
Is SWS DTC 26-13 indicated?
YES -
Go to step 25.
NO -
Faulty front passenger's weight sensor (rear outer side); replace the front passenger's seat rail including all four front passenger's weight sensors Service and Repair, then clear the DTC.
25. Turn the ignition switch to LOCK (0).
26. Disconnect the front passenger's weight sensor (front outer side) 3P connector (A) on the front passenger's seat wire harness and the front passenger's weight sensor (rear outer side) 3P connector (B) on the front passenger's seat wire harness.
27. Release the hook, and unzip the seat-cover from behind the seat-back.
28. Turn over the seat-back cover/pad to gain access to the ODS unit.
29. Remove the cover from the ODS unit.
30. Disconnect the ODS unit 18P connector (A) from the ODS unit.
31. Turn the ignition switch to ON (II), then wait for 10 seconds.
32. Measure the voltage between ODS unit 18P connector terminal No. 8 and body ground. There should be less than 0.2 V.
Is the voltage as specified?
YES -
Faulty ODS unit; replace the ODS unit Service and Repair, then clear the DTC.
NO -
Short to power in the front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC.
33. Turn the ignition switch to LOCK (0).
34. Disconnect the front passenger's weight sensor (rear outer side) 3P connector (A) on the front passenger's seat wire harness.
35. Turn the ignition switch to ON (II).
36. Clear the DTCs with the HDS.
37. Turn the ignition switch to ON (II), then wait for 10 seconds.
38. From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select SWS DTC CHECK.
Is SWS DTC 26-14 indicated?
YES -
Go to step 39.
NO -
Faulty front passenger's weight sensor (rear outer side); replace the front passenger's seat rail including all four front passenger's weight sensors Service and Repair, then clear the DTC.
39. Turn the ignition switch to LOCK (0).
40. Release the hook, and unzip the seat-cover from behind the seat-back.
41. Turn over the seat-back cover/pad to gain access to the ODS unit.
42. Remove the cover from the ODS unit.
43. Disconnect the ODS unit 18P connector (A) from the ODS unit.
44. Measure the resistance and ODS unit 18P connector terminal No. 8 and body ground. There should be an open circuit or at least 1 MOhms.
Is the resistance as specified?
YES -
Go to step 45.
NO -
Short to ground in the front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC.
45. Measure the resistance between ODS unit 18P connector terminals No. 8 and No. 14. 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 another wire in the front passenger's seat wire harness; replace the front passenger's seat wire harness, then clear the DTC.