DTC 81-62
DTC 81-62: Non-stipulated Response Data1. Make sure nothing is on the front passenger's seat.
2. Calibrate the front passenger's weight sensor unit.
3. Erase the DTC memory.
4. Check for a DTC.
Is DTC 81-61 or 81-62 indicated?
YES - Go to step 5.
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.
5. Check the connection between the SRS right side subharness 6P connector and the front passenger's weight sensor unit.
Is the connection OK?
YES - Go to step 6.
NO - Repair the poor connection and retest. If DTC 81-61 or 81-62 is still present, go to step 6.
6. Erase the DTC.
7. Check for a DTC.
Is DTC 81-61 or 81-62 indicated?
YES - Go to step 8.
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.
8. Turn the ignition switch OFF.
9. Check the No.7 (7.5A) fuse in the driver's under- dash fuse/relay box.
Is the fuse OK?
YES - Go to step 10.
NO - Replace the fuse, then turn the ignition switch ON (II). If the fuse blows again, check for a short in the No.7 (7.5A) fuse circuit (dashboard wire harness A, left floor wire harness, or SRS right side subharness).
10. Disconnect the SRS right side subharness 6P connector (A) from the front passenger's weight sensor unit (B).
11. Turn the ignition switch ON (II).
12. Check for voltage between the No.3 terminal of the front passenger's weight sensor unit 6P connector and body ground. There should be battery voltage.
Is there battery voltage?
YES - Go to step 17.
NO - Go to step 13.
13. Turn the ignition switch OFF.
14. Disconnect dashboard wire harness A 12P connector C631 from the left floor wire harness connector C631 (B).
15. Turn the ignition switch ON (II).
16. Check for voltage between the No.7 terminal of dashboard wire harness A 12P connector C631 and body ground. There should be battery voltage.
Is there battery voltage?
YES - Open in the YEL/GRN wire of the left floor wire harness or SRS right side subharness; replace the faulty harness.
NO - Open in the YEL/GRN wire of dashboard wire harness A; replace dashboard wire harness A.
17. Turn the ignition switch OFF.
18. Check resistance between the No.6 terminal of the front passenger's weight sensor unit 6P connector and body ground. There should be 0-1.0 Ohm.
Is the resistance as specified?
YES - Go to step 19.
NO - Open in the BLK wire of the SRS right side subharness or left floor wire harness or poor ground at G631. Check connection at G631; if necessary, replace the faulty harness.
19. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
20. Disconnect both seat belt tensioner 2P connectors (A).
21. Disconnect SRS unit connector B (28P) from the SRS unit.
22. Disconnect the OPDS unit harness 8P connector D from the OPDS unit.
23. Check resistance between the No.27 terminal of SRS unit connector B (28P) and body ground. There should be an open circuit, or at least 1 MOhm.
Is the resistance as specified?
YES - Go to step 24.
NO - Go to step 27.
24. Check resistance between the No.27 terminal of SRS unit connector B (28P) and the No.5 terminal of the front passenger's weight sensor unit 6P connector. There should be 0-1.0 Ohm.
Is the resistance as specified?
YES - Faulty front passenger's weight sensor unit or SRS unit; replace the front passenger's weight sensor unit. If the problem is still present, replace the SRS unit.
NO - Go to step 25.
25. Disconnect SRS main subharness 6P connector C804 (A) from the left floor wire harness connector C804 (B).
26. Check resistance between the No.27 terminal of SRS unit connector B (28P) and the No.2 terminal of SRS main subharness 6P connector C804. There should be 0-1.0 Ohm.
Is the resistance as specified?
YES - Open in the GRN/ORN wire of the left floor wire harness or SRS right side subharness, or faulty front passenger's weight sensor unit; replace the harness or unit.
NO - Open in the SRS main subharness; replace the harness.
27. Disconnect SRS main subharness 6P connector C804 (A) from left floor wire harness connector C804 (B).
28. Check resistance between the No.27 terminal of SRS unit connector B (28P) and body ground. There should be an open circuit, or at least 1 MOhm.
Is the resistance as specified?
YES - Short to ground in the SRS right side subharness, or left floor wire harness; replace the faulty harness.
NO - Short to ground in the SRS main subharness; replace the SRS main subharness.