Toyota RAV4 (XA40) 2013-2018 Service Manual: Bus ic communication malfunction
Description
The air conditioning harness connects the air conditioning amplifier and the servos. The air conditioning amplifier supplies power and sends operation instructions to each servo through the air conditioning harness. Each servo sends damper position information to the air conditioning amplifier.
Wiring diagram
Inspection procedure
- Check air conditioning amplifier
- Remove the air conditioning amplifier with its connectors still connected.
- Measure the resistance of the wire harness side connector.
Standard resistance
- Check air conditioning amplifier
- Remove the air conditioning amplifier with its connectors still connected.
- Measure the voltage of the wire harness side connector.
Standard voltage
Replace air conditioning harness assembly
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
r ...
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 ...
Other materials:
AHB (Automatic High
Beam)
The Automatic High Beam
uses an in-vehicle front
camera to assess the brightness
of streetlights, the
lights of vehicles ahead etc.,
and automatically turns the
high beams on or off as necessary.
WARNING
â– Limitations of the Automatic
High Beam
Do not overly rely on the Automatic
High Beam. Always ...
Removal
Remove package tray trim pocket subassembly
(w/o rear no. 2 Seat)
Remove tonneau cover assembly (w/o rear
no. 2 Seat)
Remove rear floor no. 1 Board (w/o rear no.
2 Seat)
Remove deck board assembly (w/o rear no. 2
Seat)
Remove rear floor no. 3 Board (w/o rear no.
2 Seat)
Re ...
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-31).
Read the dtc (see page ac-31).
Result
Go to can c ...
