Is there continuity?
YES -
Repair a short to ground in the wire.?
NO -
Go to step 14.
14. Reconnect power seat control unit connector A (40P).
15. Turn the ignition switch to ON (II).
16. Measure the voltage between front up-down position sensor 4P connector terminals No. 2 (+) and No. 3 (-).
Is there about 5 V?
YES -
Faulty front up-down position sensor, replace the front up-down motor.?
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 the ignition switch to LOCK (0).
18. Disconnect power seat control unit connector A (40P).
19. Disconnect the front up-down position sensor 4P connector.
20. Check for continuity between power seat control unit connector A (40P) terminals No. 15 and No. 29 and front up-down position sensor 4P
connector terminals No. 1 and No. 3 respectively.
