Is there battery voltage when the rear up-down switch is operated?
YES -
Replace the rear up-down motor/position sensor.?
NO -
Replace the power seat control unit.?
26. Turn the ignition switch to LOCK (0).
27. Disconnect power seat control unit connector B (18P).
28. Disconnect the rear up-down motor 2P connector.
29. Check for continuity between power seat control unit connector B (18P) terminals No. 2 and No. 10 and rear up-down 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 rear up-down motor 2P connector terminals No. 1 and No. 2 individually.
Is there continuity?
YES -
Repair a short to ground in the wire.?
