Toyota Sienna Service Manual: Rear Power Seat Switch Circuit
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
- Remove the fold seat control ECU.
- Measure the voltage according to the value(s) in the table below.
Standard voltage: LH side
RH side
2 CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - FOLDING MOTOR)
- Disconnect the connectors from the fold seat control ECU.
- Disconnect the connector from the folding motor.
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
3 INSPECT POWER REAR NO. 2 SEAT SWITCH
- Disconnect the connector from the power rear no. 2 seat switch.
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
4 CHECK HARNESS AND CONNECTOR (FOLDING MOTOR - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
5 REPAIR OR REPLACE HARNESS OR CONNECTOR (WIRE INSIDE SEAT)
- Repair or replace harness or connector (wire inside seat) and check that the malfunction disappears.
OK: Malfunction disappears.
END
Lock Switch Circuit
DESCRIPTION
Each of the left and right seats has lock switches that detect the lock
condition of the seat legs to the floor
when the seat is in the original or folded-down state. If any of the loc ...
Fold Lock Switch Circuit
DESCRIPTION
Each of the left and right seats has a fold lock switch that detects the lock
condition of the seat legs and
floor when the seat is in the stowed state. If the fold lock switch detects ...
Other materials:
Canceling the rear moon roof operation (vehicles with the rear
moon roof)
Press the switch to disable the
rear moon roof operation from the
rear seat.
Pressing the switch again will
enable the operation again.
The moon roof can be operated when
The engine switch is in the “ON” position (vehicles without a smart key
system)
or IGNITION ON mode (vehicles ...
Adjustment
1. INSPECT SHIFT LEVER POSITION
(a) When shifting from P to R position only with ignition
switch ON and brake pedal, make sure that the
shifting lever moves smoothly and can be
moderately operated.
(b) When starting engine, make sure that the vehicle
moves forward when shifting from N to D p ...
TS and CG Terminal Circuit
DESCRIPTION
In the sensor check mode, a malfunction of the speed sensor that cannot be
detected when the vehicle is
stopped is detected while driving.
Transition to the sensor check mode can be performed by connecting terminals TS
and CG of the DLC3
and turning the ignition switch from off ...