Toyota RAV4 (XA40) 2013-2018 Service Manual: Terminals of ecu (2005/11-2006/01)
- Check air conditioning amplifier
- Measure the voltage and resistance of the connectors.
Hint:
Check from the rear of the connector while it is connected to the air conditioning amplifier.
- Using an oscilloscope, check waveform 1.
Compressor and pulley operation signal
- Using an oscilloscope, check waveform 2.
Blower motor control signal 
Hint:
When the blower level is increased, the duty ratio changes accordingly.
- Using an oscilloscope, check waveform 3.
Can communication signal 
Hint:
The waveform varies depending on the can communication signal.
- Using an oscilloscope, check waveform 4.
Can communication signal 
Hint:
The waveform varies depending on the can communication signal.
- Check air conditioning control
- Measure the voltage and resistance of the connectors.
Problem symptoms table (2006/01- )
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 ...
Terminals of ecu (2006/01- )
Check air conditioning amplifier
Measure the voltage and resistance of the
connectors.
Hint:
Check from the rear of the connector while it is
connected to the air conditioning ampl ...
Other materials:
Brake switch "A" / "B" correlation
Description
The stop light switch is a duplex system that transmits two signals: stp and
st1-. These two signals are
used by the ecm to monitor whether or not the brake system is working properly.
If the signals, which
indicate the brake pedal is being depressed and released, are detected ...
Driving in vehicle-to-vehicle distance control mode
This mode employs a radar to detect the presence of vehicles up to
approximately 328 ft. (100 m) ahead, determines the current vehicle-to-
vehicle following distance, and operates to maintain a suitable following
distance from the vehicle ahead. The desired vehicle-to-vehicle
distance can also be se ...
Intake air temperature sensor gradient too high
Description
The intake air temperature (iat) sensor, mounted on the mass air flow (maf)
meter, monitors the iat.
The iat sensor has a built-in thermistor with a resistance that varies according
to the temperature of the
intake air. When the iat is low, the resistance of the thermist ...
