Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Bus ic communication malfunction

Toyota RAV4. 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.

Toyota RAV4. Bus ic communication malfunction


Wiring diagram

Toyota RAV4. Bus ic communication malfunction


Inspection procedure

  1. Check air conditioning amplifier

Toyota RAV4. Check air conditioning amplifier


  1. Remove the air conditioning amplifier with its connectors still connected.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




  1. Check air conditioning amplifier

Toyota RAV4. Check air conditioning amplifier


  1. Remove the air conditioning amplifier with its connectors still connected.
  2. Measure the voltage of the wire harness side connector.

Standard voltage




Replace air conditioning harness assembly

Compressor solenoid circuit (2006/01- )
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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:

Rear wiper rubber
Components Removal Remove rear wiper blade assembly Rotate and remove the cap as described in the "remove" procedures. Raise the arm and blade. Raise the wiper blade to the position where the claw detach with a ''click'' sound, as shown in the illustrat ...

Operation check
Check electrical door lock operation Check the basic function. Check that all doors lock when the door control switch (for manual operation) is turned to lock and all doors unlock when turned to unlock. Check that all doors lock when the driver side door lock key cylinder is t ...

Check for intermittent problems
Check for intermittent problems Hint: A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ecus can be detected by using the ecu data list function of an intelligent tester. Turn the ignition switch off and connect the intelligent test ...

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