Toyota Sienna Service Manual: Compressor Solenoid Circuit
DESCRIPTION
In this circuit, the compressor receives a refrigerant compression demand signal from the A/C amplifier.
Based on this signal, the compressor changes the amount of compressor output.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT A/C COMPRESSOR
(a) Disconnect the A/C compressor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance
2 CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR - BODY GROUND)
(a) Disconnect the A/C compressor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance 
3 CHECK HARNESS AND CONNECTOR (A/C COMPRESSOR - A/C AMPLIFIER)
(a) Disconnect the A/C compressor connector.
(b) Disconnect the A/C amplifier connector.
(c) Measure the resistance according to the value(s) in the table below
Standard resistance 
Result 
REPAIR OR REPLACE HARNESS OR CONNECTOR
Rear Air Outlet Damper Control Servo Motor Circuit
DESCRIPTION
This circuit turns the servo motor and changes each damper position by
receiving the signals from the A/
C amplifier.
The rear air outlet damper servo motor switches the air outlet ...
Multiplex Communication Circuit
DESCRIPTION
INSPECTION PROCEDURE
1 GO TO CAN COMMUNICATION SYSTEM
(a) Refer to the CAN communication system (See page CA-
7).
(b) If the CAN communication system is operating normally,
procee ...
Other materials:
Short to B+ in CAN Bus Line
DESCRIPTION
A short to B+ is suspected in the CAN bus wire when the resistance between
terminals 6 (CANH) and 16
(BAT), or terminals 14 (CANL) and 16 (BAT) of the DLC3 is below 6 kΩ.
Symptom
Trouble Area
The resistance between terminals 6 (CANH) and 16 (BAT), or
...
Transmission Fluid Temperature Sensor "A"
DESCRIPTION
The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid
temperature into a
resistance value which is input into the ECM.
The ECM applies a voltage to the temperature sensor through ECM terminal THO1.
The sensor resistance changes with the transmission f ...
Driving the vehicle
The following procedures should be observed to ensure safe
driving:
Starting the engine
Driving
With the brake pedal depressed, shift the shift lever to D.
Release the parking brake.
Gradually release the brake pedal and gently depress the accelerator
pedal to accelerate the vehicle.
...
