YES -
Go to step 21.
NO -
Repair an open in the wire.?
21. Disconnect the 4P connector from the slide position sensor and the rear up-down position sensor, then disconnect the driver's seat wire
harness 8P [14P] connector.
[ ]: With seat ventilation
22. Check for continuity between body ground and front up-down position sensor 4P connector terminal No. 1.
Is there continuity?
YES -
Repair a short to ground in the wire.?
NO -
Go to step 23.
23. Reconnect power seat control unit connector A (40P).
24. Turn the ignition switch to ON (II).
25. Measure the voltage between power seat control unit connector A (40P) terminals No. 15 and No. 29.
Is there battery voltage when the front up-down switch is operated?
YES -
Replace the front 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 front up-down motor 2P connector.
29. Check for continuity between power seat control unit connector B (18P) terminals No. 6 and No. 16 and front up-down motor 2P
connector terminals No. 1 and No. 2 respectively.
