B1825
DTC B1825: Power Seat Slide Motor Pulse ErrorNOTE:
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.
- DTC B1825 is stored when the slide switch is operated more than one second after the seat slides to the most forward or most backward position, even when the system is OK.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the power seat adjustment switch in all directions for more than 1 second each.
4. Check for DTCs with the HDS.
Is DTC B1825 indicated?
YES - Go to step 5.
NO - Intermittent failure, the slide position sensor is OK at this time. Check for loose or poor connections at the power seat control unit connector.
5. Check for DTCs with the HDS.
Are DTCs B1826, B1827 and/or B1828 also indicated?
YES - Go to step 17.
NO - Go to step 6.
6. Clear the DTCs with the HDS.
7. Turn the ignition switch OFF, and then back ON (II).
8. Operate the slide switch for 2 seconds, and check the slide motor operation.
Does the slide motor run smoothly?
YES - Go to step 9.
NO - Go to step 26.
9. Turn the ignition switch OFF.
10. Disconnect power seat control unit connector A (40P).
11. Disconnect the slide position sensor, 3P connector.
12. Check for continuity between power seat control unit connector A (40P) terminals No. 11 and No. 29 and slide position sensor 3P connector terminals No. 1 and No. 2 respectively.
Is there continuity?
YES - Go to step 13.
NO - Repair an open in the wire.
13. Check for continuity between power seat control unit connector A (40P) terminal No. 11 and body ground.
Is there continuity?
YES - Repair a short in the wire.
NO - Go to step 14.
14. Reconnect the power seat control unit connector A (40P).
15. Turn the ignition switch ON (II).
16. Measure voltage between slide position sensor 3P connector terminals No. 1 and No. 2.
Is there about 5 V?
YES - Faulty slide position sensor, replace the slide motor assembly.
NO - If there is no voltage, replace the power seat control unit. If there is battery voltage, repair a short in the wire (sensor line).
17. Turn ignition switch OFF.
18. Disconnect power seat control unit connector A (40P).
19. Disconnect the slide position sensor 3P connector.
20. Check for continuity between power seat control unit connector A (40P) terminals No. 15 and No. 29 and slide position sensor 3P connector terminals No. 3 and No. 2 respectively.
Is there continuity?
YES - Go to step 21.
NO - Repair an open in the wire.
21. Disconnect the 5P connectors from the recline motor/position sensor, the front up-down motor/position sensor, and the rear up-down motor/position sensor.
22. Check for continuity between slide position sensor 3P connector terminal No. 3 and body ground.
Is there continuity?
YES - Repair a short in the wire.
NO - Go to step 23.
23. Reconnect the power seat control unit connector A (40P).
24. Turn the ignition switch ON (II).
25. Measure voltage between power seat control unit connector A (40P)terminals No. 15 and No. 29.
Is there battery voltage when the slide switch is operated?
YES - Faulty slide position sensor, replace the slide motor assembly.
NO - Replace the power seat control unit.
26. Turn the ignition switch OFF.
27. Disconnect power seat control unit connector B (18P).
28. Disconnect the slide motor 2P connector.
29. Check for continuity between power seat control unit connector B (18P) terminals No. 7 and No. 17 and slide motor 2P connector terminals No. 1 and No. 2 respectively.
Is there continuity?
YES - Go to step 30.
NO - Repair an open in the wire.
30. Check for continuity between body ground and slide motor 2P connector terminals No. 1 and No. 2 individually.
Is there continuity?
YES - Repair a short in the wire.
NO - Go to step 31.
31. Do the slide motor test.
Is the motor OK?
YES - Replace the power seat control unit.
NO - Replace the slide motor.