2. Clear the DTCs with the HDS.
3. Operate the power seat adjustment switch in all directions for at least 6 seconds each.
4. Check for DTCs with the HDS.
Is DTC B1827 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the rear up-down motor/position sensor is OK at this time. Check for loose or poor connections at the power seat control unit
connectors.?
5. Check for DTCs with the HDS.
Is DTC B1836 also indicated?
YES -
Go to the DTC B1836 troubleshooting See: B1836.?
NO -
Go to step 6.
6. Check for DTCs with the HDS.
Are DTCs B1825, B1826, and/or B1828 also indicated?
YES -
Go to step 17.
NO -
Go to step 7.
7. Turn the ignition switch to LOCK (0) and then back to ON (II).
8. Operate the rear up-down switch for 2 seconds, and check the rear up-down motor operation.
Does the rear up-down motor run smoothly?
YES -
Go to step 9.
NO -
Go to step 26.
9. Turn the ignition switch to LOCK (0).
10. Disconnect power seat control unit connector A (40P).
11. Disconnect the rear up-down position sensor 4P connector.
12. Check for continuity between power seat control unit connector A (40P) terminals No. 13 and No. 29 and rear up-down position sensor 4P
connector terminals No. 2 and No. 3 respectively.
