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- )
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:

Air outlet damper control servo motor circuit
Description The damper servo sends pulse signals to indicate the damper position to the air conditioning amplifier. The air conditioning amplifier activates the motor (normal or reverse) based on these signals to move the mode damper to the appropriate position, which controls the air o ...

Check mode procedure
Check mode (signal check) Connect the intelligent tester (with can vim) to the dlc3. Turn the ignition switch on. Select the "signal check", and continue checking with the intelligent tester. Notice: Select the "signal check" from the "dtc check&quo ...

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 ...

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