Toyota Sienna Service Manual: Door control transmitter
INSPECTION
1. INSPECT DOOR CONTROL TRANSMITTER

- Inspect operation of the transmitter.
- Remove the battery (lithium battery) from the transmitter.
- Install a new or normal battery (lithium battery).
- When a new or normal battery is not available,
connect 2 new 1.5 V batteries in series,
connect the battery positive (+) to the battery
receptacle side terminal and battery negative (-
) to the bottom terminal, then apply 3 V voltage
to the transmitter.
- In a location that is approx. 1m (3.28 ft) away
from the driver side outside door handle in the
right direction, point the key plate of the
transmitter at the vehicle and check operation
of the transmitter by pressing a transmission
switch on the transmitter body.
Standard:
The door lock can be operated via the
remote control.
HINT:
- The minimum operational distance differs,
depending on the operator, the way the
transmitter is held, and the location.
- Since the transmitter uses faint electric
waves, the operational distance might be
shortened if noise or strong electric wave
occurs in the area where the frequency is
used.
- Install the battery (lithium battery).
- Inspect the battery capacity.
HINT:
- The capacity of the battery can be determined
only when the battery is installed in the
transmitter. For a lithium battery used in the
transmitter, a voltage of more than 2.5 V is
shown on the tester until the energy is
completely consumed, while no battery is
installed in the transmitter. Therefore, it is
necessary to measure the voltage while the
battery is installed in transmitter (a resistance of
1.2 kΩ is applied to the battery) when checking
the amount of energy left in the battery.
- If the transmitter is faulty, the amount of energy
left in the battery might not be checked correctly.
- Remove the battery (lithium battery) from the transmitter.

- Connect the lead to the negative (-) terminal of
the transmitter and install the battery.

- Connect the tester positive (+) probe to the
positive (+) battery (lithium battery) and the
tester negative (-) probe to the lead
respectively.
- Press one of the transmission switches on the
transmitter for approx. 1 second.
- Press the transmission switch on the
transmitter again to check the voltage.
Standard voltage:
2.2 V or higher
HINT:
- Disconnect the lead.
- Set the battery (lithium battery) in the
transmitter.
REPLACEMENT
1. REMOVE TRANSMITTER BATTERY
NOTICE:
Special caution should be taken for handling each
component as they are precision electronic
components.
Using a coin or the equiva ...
INSPECTION
1. INSPECT DOOR CONTROL SWITCH ASSEMBLY
Measure the resistance according to the value(s) in
the table below.
Standard resistance
HINT:
If the result is not as spec ...
Other materials:
Reassembly
1. INSTALL REAR WHEEL CYLINDER CUP KIT
(a) Temporarily tighten the bleeder plug to the wheel
cylinder, and install the bleeder plug cap.
(b) Apply lithium soap base glycol grease to the 2 new
wheel cylinder cups and the 2 pistons.
(c) Install the 2 wheel cylinder cups to each piston.
...
Cleaning and protecting
the vehicle exterior
Perform the following to protect the vehicle and maintain it in
prime condition:
Working from top to bottom, liberally apply water to the vehicle
body, wheel wells and underside of the vehicle to remove any dirt
and dust.
Wash the vehicle body using a sponge or soft cloth, such as a
cha ...
Manual Up / Down and Auto Down Function does not Operate on
Passenger Side Only
DESCRIPTION
If the manual UP/DOWN function does not operate, the power window motor, the
regulator switch or the
wire harness may be malfunctioning.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK WIRE HARNESS (POWER SOURCE)
Disconnect the P37 regulator switch connector.
Turn ...