Toyota RAV4 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 e37 amplifier connector.
- 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 ...