Toyota Sienna Service Manual: Inspection
1. INSPECT MAGNETIC CLUTCH CLEARANCE
(a) Set the dial indicator to the magnetic clutch hub.
(b) Connect the battery positive lead to the terminal 1 of the magnet clutch connector and the negative lead to the earth wire. Turn on and off the magnetic clutch and measure the clearance.
Standard clearance: 0.35 to 0.60 mm (0.013 to 0.023 in.)
If the measured value is not within the standard range, remove the magnetic clutch hub and adjust it with the magnetic clutch washers.
NOTICE: Adjustment can be performed with 3 or less magnetic clutch washers.
2. INSPECT COMPRESSOR OIL
(a) When replacing the compressor and magnetic clutch with a new one, after gradually removing the refrigerant gas from the service valve, drain the following amount of oil from the new compressor and magnetic clutch before installation.
Standard: (Oil capacity inside new compressor and magnetic clutch: 225 + 15 cc (7.6 + 0.5 fl.oz.)) - (Remaining oil amount in the removed compressor and magnetic clutch) = (Oil amount to be removed when replacing)
NOTICE:
- When checking the compressor oil level, observe the precautions on the cooler removal / installation.
- Because compressor oil remains in the pipes of the vehicle, if a new compressor and magnetic clutch is installed without removing some oil inside, the oil amount becomes excessive, preventing heat exchange in the refrigerant cycle and causing refrigerant failure.
- If the remaining oil in the removed compressor and magnetic clutch is too small in volume, check for oil leakage.
- Be sure to use ND-OIL 8 for compressor oil.
3. INSPECT COMPRESSOR AND MAGNETIC CLUTCH
(a) Disconnect the connector from the compressor and magnetic clutch.
(b) Disconnect the connector from the magnetic clutch.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance
If the resistance is not as specified, replace the compressor and magnetic clutch.
4. INSPECT MAGNETIC CLUTCH
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance 
(b) When connector terminal A1 is connected to the positive (+) battery terminal, check that the following occurs: 1) the magnetic clutch's operating sound can be heard, and 2) the magnetic clutch's hub and rotor lock.
If the result is not as specified, replace the magnetic clutch.
Disassembly
1. REMOVE MAGNETIC CLUTCH ASSEMBLY
(a) Place the compressor and magnetic clutch in a vise.
(b) Using locking pliers, hold the magnetic clutch hub.
(c) Remove the bolt, magnetic clutch hub, and
...
Reassembly
1. INSTALL MAGNETIC CLUTCH ASSEMBLY
(a) Install the magnetic clutch stator while aligning the
protrusion on the stator with the notch on the air
compressor assembly as shown in the illustration ...
Other materials:
Touch Panel Switch does not Function
INSPECTION PROCEDURE
1 CHECK TOUCH PANEL
Check for foreign matter on the display.
OK:
The display is clean
2 CHECK TOUCH SWITCH (DISPLAY CHECK MODE)
Enter the "Display Check" mode (Touch Switch Check).
Touch the display in the area where the switch
malfunction o ...
Engine Coolant Temperature Circuit
DESCRIPTION
A thermistor is built into the Engine Coolant Temperature (ECT) sensor, of
which the resistance value
varies according to the ECT.
The structure of the sensor and its connection to the ECM are the same as those
of the Intake Air
Temperature (IAT) sensor.
HINT:
When any ...
Vehicle Speed Signal Circuit between Multi-display and Combination
Meter
DESCRIPTION
This circuit is necessary for the ASL (Auto Sound Leveliser) built into the
radio receiver.
Speed signals are received from the combination meter and used for the ASL.
The ASL function automatically adjusts the sound data in order to enable hearing
the clear audio sound
even ...
