Toyota RAV4 (XA40) 2013-2018 Service Manual: 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 dtc
- Clear the dtc (see page ac-127).
- Read the dtc (see page ac-127).
Result 
Go to can communication system
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
ref ...
Blower motor circuit
Description
When the heater control (blower switch) is set to position 1 or higher, the
contact of the htr relay is
closed, current flows to the blower motor, and the blower motor operates. The
...
Other materials:
Removal (2006/01- )
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove air cleaner case sub-assembly (for
2az-fe)
Remove the air clea ...
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 ...
Problem symptoms table
When a "normal" code is output during a dtc check but
the problem is still occurring, use the problem symptoms
table. The suspected areas (circuits or parts) for each
problem symptom are in the table. The suspected areas
are listed in order of probability. A description of each of
the ...
