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:
Underdrive clutch
Components
Disassembly
Inspect pack clearance of underdrive
clutch (see page ax-247)
Remove no. 1 Underdrive clutch disc
Using a screwdriver, pry out the underdrive clutch
flange snap ring.
Remove the flange, 3 discs and 3 plates from the
underdrive clutch drum.
In ...
Traction control switch (for 2wd)
Components
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 traction control switch (auto lsd switch)
...
Problem symptoms table (2005/11-2006/01)
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 ...
