Toyota RAV4 (XA40) 2013-2018 Service Manual: Compressor lock sensor circuit
Description
This sensor sends 1 pulse per engine revolution to the air conditioning amplifier. If the ratio of the compressor speed divided by the engine speed is smaller than a predetermined value, the air conditioning amplifier turns the compressor off, and the indicator blinks at approximately 1 second intervals.
Wiring diagram
Inspection procedure
- Check air conditioning amplifier (lock signal)
- Remove the air conditioning amplifier with its connectors still connected.
- Check the waveform of the amplifier connector.
Ok:
waveform is as shown in the illustration.
- Inspect compressor lock sensor
- Disconnect the b47 compressor lock sensor connector.
- Measure the resistance of the sensor.
Standard resistance 
- Check wire harness (compressor lock sensor - air conditioning amplifier)
- Disconnect the b47 compressor lock sensor connector.
- Disconnect the e36 amplifier connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance 
Replace air conditioning amplifier
Evaporator temperature sensor circuit
Description
The no. 1 Cooler thermistor (evaporator temperature sensor) is installed on
the evaporator in the air
conditioning unit to detect the temperature of the cooled air that has passed ...
Pressure sensor circuit
Description
This dtc is output when the refrigerant pressure is either extremely low
(0.19 Mpa [2.0 Kgf/cm2, 28 psi]
or less) or extremely high (3.14 Mpa [32.0 Kgf/cm2, 455 psi] or more). The ...
Other materials:
Reassembly
Hint:
Thoroughly clean all parts to be assembled.
Before installing the parts, apply fresh engine oil to all
sliding and rotating surfaces.
Replace oil seals with new ones.
Install valve stem oil seal
Using sst, push in a new oil seal.
Sst 09201-41020
Hint:
The int ...
Parking brake system
Problem symptoms table
Hint:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "suspected area" column of
the table. Check each symptom by checking the suspected
areas in the order th ...
Mechanical system tests
Stall speed test
Hint:
This test is to check the overall performance of the
engine and transaxle.
Notice:
Do not perform the stall speed test longer than 5
seconds.
To ensure safety, perform this test in an open and
level area that provides good traction.
The stall speed test sh ...
