Toyota Sienna Service Manual: Fold Seat Switch Circuit
DESCRIPTION
When the fold seat switch is operated, a switch operation signal is sent to the fold seat control ECU. The ECU receives switch operation signals from each switch and activates the folding motor, reclining motor, and release actuator.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FOLD SEAT CONTROL ECU
- Remove the fold seat control ECU with connectors still connected.
- Measure the voltage according to the value(s) in the table below.
Standard voltage: LH side
RH side
2 INSPECT FOLD SEAT SWITCH
- Remove the fold seat switch.
- Disconnect the connector from the fold seat switch.
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
3 CHECK HARNESS AND CONNECTOR (FOLD SEAT SWITCH - FOLD SEAT CONTROL ECU)
- Disconnect the connector from the fold seat control ECU.
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
4 CHECK HARNESS AND CONNECTOR (BACK DOOR COURTESY SWITCH - FOLD SEAT SWITCH)
- Disconnect the connector from the back door courtesy switch.
- Measure the resistance according to the value(s) in the table below.
Standard resistance: LH side
RH side
5 INSPECT BACK DOOR COURTESY SWITCH
- Measure the resistance according to the value(s) in the table below.
Standard resistance
6 CHECK HARNESS AND CONNECTOR (BACK DOOR COURTESY SWITCH - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
REPLACE FOLD SEAT CONTROL ECU
Power Source Circuit
DESCRIPTION
Power is supplied to the fold seat control ECU through the L-RR2 SEAT and
R-RR2 SEAT fuses.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FUSE (L-RR2 SEAT, R-RR2 SEAT)
Re ...
Folding Motor Circuit
DESCRIPTION
The fold seat control ECU receives a switch operation signal from the fold
seat switch and activates the
folding motor. At this time, the Hall IC (seat cushion position sensor) detects ...
Other materials:
Towing related terms
GCWR (Gross Combination Weight Rating)
The maximum allowable gross
combination weight. The gross
combination weight is the sum
of the total vehicle weight
(including the occupants, cargo
and any optional equipment
installed on the vehicle) and the
weight of the trailer being towed
(incl ...
The Rear Cross Traffic Alert function detection areas
The areas that vehicles can be detected in are outlined below.
To give the driver a more consistent time to react, the buzzer can alert
for faster vehicles from farther away.
Example:
The Rear Cross Traffic Alert function is operational when
The BSM main switch is set to on.
The ...
Customize parameters
HINT:
The following items can be customized.
NOTICE:
When the customer requests a change in a function,
first make sure that customization of the function(s) is
possible.
Be sure to record the current settings before
customizing.
When troubleshooting a function, fir ...
