DTC 25
DTC 25: Yaw Rate Sensor1. Clear the DTC.
2. Turn the ignition switch OFF, then turn it ON (II) again.
3. Test-drive the vehicle around a number of corners.
4. Verify the DTC.
Is DTC 27 or 64 indicated?
YES-Do the appropriate troubleshooting for the DTC.
NO-Go to step 5.
5. Turn the ignition switch OFF.
6. Check for continuity between the yaw rate sensor 4P connector terminal No.2 and body ground.
Is there continuity?
YES-Go to step 7.
NO-Repair open in the wire between the VSA control unit and the yaw rate sensor.
7. Turn the ignition switch ON (II).
8. Measure the voltage between the yaw rate sensor 4P connector terminal No.4 and body ground.
Is there about 5 V?
YES-Go to step 9.
NO-Repair open in the wire between the VSA control unit and the yaw rate sensor.
9. Turn the ignition switch OFF.
10. Disconnect VSA control unit connector C (26P) and the yaw rate sensor 4P connector.
11. Check for continuity between the yaw rate sensor 4P connector terminal No. 1 and body ground.
Is there continuity?
YES-Repair short to body ground in the wire between the VSA control unit and the yaw rate sensor.
NO-Go to step 12.
12. Start the engine.
13. Measure the voltage between the yaw rate sensor 4P connector terminal No. 3 and body ground.
Is there 1 V or more?
YES-Repair short to power between the VSA control unit and the yaw rate sensor.
NO-Go to step 14.
14. Turn the ignition switch OFF.
15. Check for continuity between the yaw rate sensor 4P connector terminal No. 3 and body ground.
Is there continuity?
YES-Repair short to body ground in the wire between the VSA control unit and the yaw rate sensor.
NO-Go to step 16.
16. Connect VSA control unit connector C (26P) and the yaw rate sensor 4P connector.
17. Turn the ignition switch on (II).
18. Measure the voltage between the yaw rate sensor 4P connector terminal No. 1 and body ground.
Is there about 0 V?
YES-Replace the yaw rate sensor.
NO-Go to step 19.
19. Measure the voltage between VSA control unit connector C (26P) terminal No. 19 and body ground.
Is there about 0 V ?
YES-Repair open in the wire between the VSA control unit and the yaw rate sensor.
NO-Go to step 20.
20. Measure the voltage between the yaw rate sensor 4P connector terminal No. 3 and body ground.
Is there about 2.5 V?
YES-Go to step 21.
NO-Replace the yaw rate sensor.
21. Measure the voltage between the VSA control unit connector C (26P) terminal No. 5 and body ground.
Is there about 2.5 V?
YES-Go to step 22.
NO-Repair open in the wire between the VSA control unit and the yaw rate sensor.
22. Substitute a known-good yaw rate sensor.
23. Do the neutral position memorization. Programming and Relearning
24. Test-drive the vehicle around a number of right and left hand corners.
Is DTC 25 indicated ?
YES-Check for loose VSA control unit connectors. If necessary, replace the VSA control unit.
NO-Check for loose yaw rate sensor connectors. If necessary, replace the yaw rate sensor.