Toyota Sienna Service Manual: Refrigerant
On-vehicle inspection
1. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET
(a) This method uses a manifold gauge set to locate problem areas. Read the manifold gauge pressure when these conditions are established.
Test conditions:
- Temperature at the air inlet is 30 to 35°C (86 to 95°F).
- Engine is running at 1,500 rpm.
- All doors are fully open.
- Blower speed control switch is at HI.
- Temperature control switch is at MAX. COOL.
- A/C switch is ON.
(b) Gauge readings (Reference)
(1) Normally functioning refrigeration system
Gauge reading 
(2) The A/C system periodically changes between normal and improper function due to moisture in the refrigerant system.
(3) The A/C system does not function effectively due to insufficient cooling.
(4) The A/C system does not function effectively due to poor circulation of the refrigerant.
(5) The A/C system does not function intermittently because the refrigerant does not circulate.
(6) The A/C system does not function effectively due to overcharged refrigerant or insufficient cooling of the condenser.
(7) The A/C system does not function due to air in the refrigeration system.
| CAUTION: The low-pressure piping may be very hot and cause serious burns. |
(8) The A/C system does not function effectively due to an expansion valve malfunction.
(9) The A/C system does not function due to a defective compressor.
Gauge readings (Reference)
Terminals of ecu
1. A/C AMPLIFIER
HINT:
Check from the rear of the connector while it is
connected to the A/C amplifier.
(a) Waveform 1:
(b) Waveform 2: ...
Replacement
1. DISCHARGE REFRIGERANT FROM
REFRIGERATION SYSTEM
SST 07110-58060 (07117-58080, 07117-58090,
07117-78050, 07117-88060, 07117-88070,
07117-88080)
(a) Turn the A/C switch to ON.
(b) Operating t ...
Other materials:
Registering and connecting from the “Bluetooth* Setup” screen
To display the screen shown below, press the “SETUP” button and
select “Bluetooth*” on the “Setup” screen.
Select to connect the device to
be used with audio system.
Select to register a Bluetooth® device to be used with audio system.
Select to set detailed
Blueto ...
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
...
Installation
1. INSTALL REAR NO. 2 SEAT ASSEMBLY
Lock the seat leg rear to the floor striker.
Lock the seat leg front to the floor striker.
Install the rear No. 2 seat assembly with the 6 bolts.
Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf)
NOTICE:
Tighten the bolts in the order sho ...