Toyota RAV4 (XA40) 2013-2018 Service Manual: Air conditioning control panel does not operate
Description
This circuit consists of the air conditioning control and the air conditioning amplifier. When the air conditioning control is operated, signals are transmitted to the air conditioning amplifier through the lin communication system.
If the lin communication system malfunctions, the air conditioning amplifier does not operate even if the air conditioning control is operated.
Wiring diagram
Inspection procedure
- Check wire harness (air conditioning control assembly - body ground)
- Disconnect the air conditioning control assembly connector.
- measure the resistance of the wire harness side connector.
Standard resistance
- Check wire harness (air conditioning control assembly - battery)
- Disconnect the e23 air conditioning control assembly connector.
- Measure the voltage of the wire harness side connector.
Standard voltage
- Check wire harness (air conditioning amplifier - air conditioning control)
- Disconnect the e23 control connector.
- Disconnect the e37 amplifier connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
- Replace air conditioning amplifier
- Replace the air conditioning control with a new or properly functioning one.
- Operate the air conditioning control to check that it functions properly.
Replace air conditioning amplifier
Multiplex communication circuit
Description
The air conditioning amplifier communicates data with the ecm and combination
meter through the can
communication system.
Wiring diagram
Inspection procedure
Check dt ...
Blower motor circuit
Description
The blower motor is operated by signals from the air conditioning amplifier.
Blower motor speed signals
are transmitted in accordance with changes in the duty ratio.
Wiring diagra ...
Other materials:
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
of the table. Check each symptom by checking the suspected
areas in the order they are listed. Replace p ...
Compressor solenoid circuit (2006/01- )
Description
In this circuit, the compressor receives a refrigerant compression demand
signal from the air conditioning
amplifier. Based on this signal, the compressor changes the degree of
refrigerant compression.
Hint:
*: Compressor and pulley for 2az-fe, compressor and magnetic clutc ...
Engine (ignition) switch
(vehicles without a
smart key system)
Starting the engine
Check that the parking brake is set.
Check that the shift lever is set in p.
Firmly depress the brake pedal.
Turn the engine switch to the “start” position to start the engine.
Changing the engine switch positions
“Lock”
The steering wheel is locked an ...
