Toyota RAV4 manuals

Toyota RAV4 Service Manual: Compressor lock sensor circuit

Toyota RAV4. 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.

Toyota RAV4. Compressor lock sensor circuit


Wiring diagram

Toyota RAV4. Compressor lock sensor circuit


Inspection procedure

  1. Check air conditioning amplifier (lock signal)

  1. Remove the air conditioning amplifier with its connectors still connected.
  2. Check the waveform of the amplifier connector.

Toyota RAV4. Check air conditioning amplifier (lock signal)


Ok: waveform is as shown in the illustration.


Toyota RAV4. Check air conditioning amplifier (lock signal)




  1. Inspect compressor lock sensor

Toyota RAV4. Inspect compressor lock sensor


  1. Disconnect the b47 compressor lock sensor connector.
  2. Measure the resistance of the sensor.

Standard resistance




  1. Check wire harness (compressor lock sensor - air conditioning amplifier)

Toyota RAV4. Check wire harness (compressor lock sensor - air conditioning amplifier)


  1. Disconnect the b47 compressor lock sensor connector.
  2. Disconnect the e36 amplifier connector.
  3. 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:

Symptom confirmation and diagnostic trouble code
Hint: The diagnostic system in the rav4 has various functions. The first function is the diagnostic trouble code (dtc) check. A dtc is a code stored in the ecu memory whenever a malfunction in the signal circuits to the ecu occurs. In a dtc check, a previous malfunction's dtc can be ch ...

Dtc check / clear
Check dtc (when using intelligent tester) Connect the intelligent tester (with can vim) to the dlc3. Turn the ignition switch on. Turn the tester on. Read the dtcs by following the prompts on the tester screen. Hint: Refer to the intelligent tester operator's manual for furth ...

Removal and installation of fuel control parts
Place for removing and installing fuel system parts Work in a location with good air ventilation that does not have welders, grinders, drills, electric motors, stoves, or any other ignition sources. Never work in a pit or near a pit as vaporized fuel will collect in those places. ...

В© 2011-2019 Copyright www.trav4.net