Toyota RAV4 manuals

Toyota RAV4 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

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Multiplex communication circuit
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Other materials:

Problem symptoms table
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. Re ...

Forward clutch
Components Disassembly Inspect forward clutch (see page ax-227) Remove forward multiple disc clutch disc Using a screwdriver, remove the snap ring. Remove the flange , 5 discs and 5 plates from the input shaft. Inspect forward multiple disc clutch disc (see page ax-228 ...

Front stabilizer bar
Components Removal Remove front wheel Remove front stabilizer link assembly lh Remove the 2 nuts and stabilizer link. Remove front stabilizer link assembly rh Hint: Use the same procedures described for the lh side. Remove front suspension member brace front lh ...

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