DESCRIPTION
When the power rear no. 2 seat switch is operated, a recline signal is sent to the fold seat control ECU.
The ECU activates the reclining motor based on the signal from the power rear no. 2 seat switch.
WIRING DIAGRAM

INSPECTION PROCEDURE
1 INSPECT FOLD SEAT CONTROL ECU

Standard voltage: LH side

RH side

2 CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - FOLDING MOTOR)

Standard resistance: LH side

RH side

3 INSPECT POWER REAR NO. 2 SEAT SWITCH

Standard resistance: LH side

RH side

4 CHECK HARNESS AND CONNECTOR (FOLDING MOTOR - BODY GROUND)

Standard resistance: LH side

RH side

5 REPAIR OR REPLACE HARNESS OR CONNECTOR (WIRE INSIDE SEAT)
OK: Malfunction disappears.
END
Lock Switch Circuit
Fold Lock Switch CircuitRemoval
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
2. REMOVE FRONT DOOR SCUFF PLATE LH
3. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH
4. REMOVE LOWER INSTRUMENT PANEL FINISH
PANEL SUB-ASSEMBLY LH (See page IP-6)
5. REMOVE TIRE PRESSURE WARNING RESET SWITCH
(a) Disengage the 2 claws and remove t ...
When servicing full-time 4wd vehicles
The full-time 4WD SIENNA is equipped with the open
center differential system.
If incorrect preparations or test procedures are used, the
test will not only be unsuccessful, but may be dangerous
as well.
Therefore, before beginning any such servicing or test,
be sure to check the following ...
Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
2. REMOVE REAR NO. 2 SEAT LEG SIDE GARNISH SUB-ASSEMBLY
Disengage the 9 clips and remove the rear No. 2
seat leg side garnish sub-assembly.
Remove the 9 clips from the rear No. 2 seat leg side
garnish sub-assembly.
3. ...