Toyota Sienna Service Manual: Air conditioning pressure sensor
ON-VEHICLE INSPECTION
1. INSPECT A/C PRESSURE SENSOR
(a) Install the manifold gauge set.
(b) Disconnect the connector from the A/C pressure sensor.
(c) Connect the three 1.5 V dry cell batteries' positive (+) lead to terminal 3 and the negative (-) lead to terminal 1.
(d) Connect the voltmeter's positive (+) lead to terminal 2 and the negative (-) lead to terminal 1.
(e) Measure the voltage according to the value(s) in the table below.
Standard voltage 
If the result is not as specified, replace the A/C pressure sensor.
Evaporator temperature sensor (for rear air conditioning system)
ON-VEHICLE INSPECTION
1. INSPECT REAR A/C EVAPORATOR TEMPERATURE SENSOR
(a) Remove the rear evaporator temperature sensor.
(b) Disconnect the connector from the rear evaporator
temperature s ...
Magnetic clutch relay
ON-VEHICLE INSPECTION
1. INSPECT MAGNETIC CLUTCH RELAY
(a) Remove the magnetic clutch relay.
(b) Measure the resistance according to the value(s) in
the table below.
Standard resistance
I ...
Other materials:
Passenger Side Buckle Switch Circuit Malfunction
DTC B1771 Passenger Side Buckle Switch Circuit Malfunction
DESCRIPTION
The passenger side buckle switch circuit consists of the occupant
classification ECU and the front seat
inner belt assembly RH.
DTC B1771 is recorded when a malfunction is detected in the passenger side
buckle switch ci ...
Microphone Circuit between Microphone and Radio and Navigation
Assembly
DESCRIPTION
This circuit sends a microphone signal from the microphone to the radio and
navigation assembly.
It also supplies power from the radio and navigation assembly to the microphone.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT RADIO AND NAVIGATION ASSEMBLY
Measure the v ...
Installation
1. INSTALL TIRE PRESSURE WARNING RESET SWITCH
(a) Engage the 2 claws to install the tire pressure
warning reset switch to the lower instrument panel
finish panel sub-assembly LH.
2. INSTALL LOWER INSTRUMENT PANEL FINISH
PANEL SUB-ASSEMBLY LH
3. INSTALL COWL SIDE TRIM SUB-ASSEMBLY LH
4. IN ...
