Toyota Sienna Service Manual: On-vehicle inspection
1. CHECK POWER REAR NO. 2 SEAT with STOWING FUNCTION
- Check the basic functions.
- Operate the fold seat switch and power rear No.2 seat switch and check to make sure each seat function works:
- Folding-down operation
- Stowing operation
- Return operation
- Reclining operation
- Park / Neutral Position Switch Circuit
- Back Door Courtesy Switch Circuit
- Indicator Circuit
- Power Source Circuit
- Fold Seat Switch Circuit
- Folding Motor Circuit
- Reclining Motor Circuit
- Release Actuator Circuit
- Lock Switch Circuit
- Rear Power Seat Switch Circuit
- Fold Lock Switch Circuit
Diagnosis system
1. CHECK DLC3
The vehicle uses ISO 15765-4 communication
protocol.
The terminal arrangement of the DLC3 complies
with SAE 1962 and matched the ISO 15765-4
format.
If the resul ...
Park / Neutral Position Switch Circuit
DESCRIPTION
The fold seat control ECU receives signals from the Park/Neutral position
switch and controls the seat
stowing and return operations. If the shift lever is in any position other than
...
Other materials:
Actuator Supply Voltage Circuit / Open
DESCRIPTION
The ECM monitors the output voltage to the throttle actuator. This self-check
ensures that the ECM is
functioning properly. The output voltage is usually 0 V when the ignition switch
is turned off. If the output
voltage is higher than 7 volts when the ignition switch is turned ...
Installation
1. INSTALL STEERING ANGLE SENSOR
(a) Install the steering sensor onto the spiral cable.
2. PLACE FRONT WHEELS FACING STRAIGHT AHEAD
3. INSTALL SPIRAL CABLE SUB-ASSEMBLY (See page
RS-434)
4. INSTALL STEERING COLUMN COVER LWR (See
page RS-435)
5. CENTER SPIRAL CABLE (See page RS-435)
6. IN ...
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 IN ...
