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:
Removal
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 steering column cover lower
Detach the 4 claws, release the ...
Exhaust gas precautions
Harmful substance to the
human body is included in
exhaust gases if inhaled.
WARNING
Exhaust gases contain harmful
carbon monoxide (CO), which is
colorless and odorless. Observe
the following precautions.
Failure to do so may cause
exhaust gases to enter the vehicle
and may lead to an accident
caus ...
Pig power supply voltage malfunction
Description
When a problem occurs in the system, the power source relay circuit is shut
off to stop the power assist.
Wiring diagram
Inspection procedure
Read value of intelligent tester (pig power supply)
Connect the intelligent tester (with can vim) to the
dlc3.
Turn ...
