Toyota Sienna Service Manual: Release Actuator Circuit
DESCRIPTION
The fold seat control ECU receives a switch operation signal from the fold seat switch and activates the release actuator. The release actuator releases the lock of the stowed seat based on a drive voltage received from the ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FOLD SEAT CONTROL ECU
- Remove the fold seat control ECU with connector still connected.
- 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 sid
3 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
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Reclining Motor Circuit
DESCRIPTION
The fold seat control ECU receives a switch operation signal from the power
rear no. 2 seat switch and
the fold seat switch, and activates the reclining motor. At this time, the Hall
...
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 ...
Other materials:
SRS Warning Light Remains ON
DESCRIPTION
The SRS warning light is located on the combination meter assembly.
When the SRS is normal, the SRS warning light comes on for approximately 6
seconds after the ignition
switch is turned from the LOCK position to ON position, and then goes off
automatically.
If there is a mal ...
Driving assist systems
To help enhance driving safety and performance, the following
systems operate automatically in response to various driving
situations. Be aware, however, that these systems are supplementary
and should not be relied upon too heavily when operating
the vehicle.
ABS (Anti-lock Brake System)
Help ...
Under hood
GENERAL MAINTENANCE
1. GENERAL NOTES
Maintenance requirements very depending on the
country.
Check the maintenance schedule in the owner's
manual supplement.
Following the maintenance schedule is mandatory.
Determine the appropriate time to service the vehicle
using either miles dri ...
