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

Solar sensor circuit (passenger side)
Description The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning auto mode. The output voltage from the solar se ...

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:

Registration
Hint: The key has 2 codes: the key code (immobiliser code) and the wireless code (recognition code). Both of these codes need to be registered. For wireless code registration procedures, refer to the following procedures (see page dl- 46). For key code registration procedures, refer to the pro ...

Installation
Install air conditioner unit assembly Install the a/c unit with the bolt and nut. Torque: 9.8 N*m (100 kgf*cm, 7 ft.*Lbf) Install instrument panel reinforcement Install the instrument panel reinforcement with the 6 bolts. Torque: 20 n*m (204 kgf*cm, 15 ft.*Lbf) ...

Engine control system malfunction
Description If a malfunction in the engine control system is detected, the operations of vsc and trc are prohibited by the fail-safe function. When the signals from the engine are input normally, the fail-safe is canceled and the dtc is not stored. Inspection procedure Check harn ...

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