DTC Troubleshooting: B1827
  1. Check for continuity between body ground and rear up-down motor/position sensor 5P connector No. 1 and No. 2 terminals individually.
Is there continuity?
YES -
Repair a short to ground in the wire.■
NO -
Go to Step 31 .
  1. Test the rear up-down motor.
Is the motor OK?
YES -
Replace the power seat control unit .■
NO -
Replace the seat frame assembly.■