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:
System description
Engine immobiliser system description
The engine immobiliser system is designed to prevent
the vehicle from being stolen. This system uses a
transponder key ecu that stores the key codes of
authorized ignition keys. If an attempt is made to start
the engine using an unauthorized key, the e ...
General information
A large number of ecu controlled systems are used in the
rav4. In general, ecu controlled systems are considered to
be very intricate, requiring a high level of technical knowledge
to troubleshoot. However, most problem checking procedures
only involve inspecting the ecu controlled system's circ ...
Headlight switch
The headlights can be operated
manually or automatically.
Turning on the headlights
Operating the switch
turns on the lights as follows:
U.S.A. (Type A)
The side marker, parking,
tail, license plate, instrument
panel lights, and
daytime running lights turn on.
The headlights and all
light ...
