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)

Toyota RAV4. 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.

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 e37 amplifier connector.
  3. Measure the resistance of the wire harness side connectors.

Standard resistance



Replace air conditioning amplifier

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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:

Removal
Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Disconnect cable from positive battery terminal Remove battery clamp ...

Terminals of ecu
Check combination meter assembly Measure the voltage and resistance of the connector. Check instrument panel junction block (main body ecu) Measure the voltage and resistance of the connectors. ...

Solar sensor (for automatic air conditioning system)
Components Removal Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove solar sensor Using a screwdriver, p ...

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