Toyota RAV4 manuals

Toyota RAV4 Service Manual: Communication

Toyota RAV4. Communication


Description

When a key is inserted into the ignition key cylinder but no communication occurs between the key and transponder key ecu, dtc b2796 is output. When a key is inserted into the ignition key cylinder but a communication error occurs between the key and transponder key ecu, dtc b2798 is output.

Wiring diagram

Toyota RAV4. Communication


Inspection procedure

  1. Read value of intelligent tester (engine immobiliser system)

  1. Connect the intelligent tester (with can vim) to the dlc3.
  2. Turn the ignition switch on with a key that cannot start the engine.
  3. On the intelligent tester, enter the following menus: diagnosis / obd/mobd / immobiliser / data list / immobiliser. Read the result.

Toyota RAV4. Read value of intelligent tester (engine immobiliser system)


Ok: unset (key is in ignition key cylinder) appears on the screen.



  1. Check whether engine starts with other key

  1. Check whether the engine starts with the vehicle's other keys.

Ok: engine starts.



  1. Read value of intelligent tester (transponder key coil)

  1. Connect the intelligent tester (with can vim) to the dlc3.
  2. Turn the ignition switch on with a key that cannot start the engine.
  3. On the intelligent tester, enter the following menus: diagnosis / obd/mobd / immobiliser / data list / antenna coil. Read the result.

Toyota RAV4. Read value of intelligent tester (transponder key coil)


Ok: normal (transponder key coil is normal) appears on the screen.



  1. Check wire harness (transponder key ecu - transponder key amplifier)

Toyota RAV4. Check wire harness (transponder key ecu - transponder key amplifier)


  1. Disconnect the e46 ecu connector.
  2. Disconnect the e5 amplifier connector.
  3. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check transponder key amplifier (operation)

  1. Temporarily replace the transponder key amplifier with a new or normally functioning one..
  2. Check that the engine starts normally

Ok: engine starts normally.



End (transponder key amplifier is defective)

Unmatched key code
Description This dtc is output when a key code that has not been registered in the transponder key ecu is inserted into the ignition key cylinder. Inspection procedure Reregister key ...

Communication malfunction no. 1
Description This dtc is output when a communication error occurs between the transponder key amplifier and transponder key ecu. Some possible reasons for the communication error are: 1) 2 or ...

Other materials:

Transmitter id
Description Hint: It is necessary to perform the procedure to identify the tire pressure monitor valve that is malfunctioning because it cannot be identified by the output dtc. Inspection procedure Notice: It is necessary to register an id code after replacing the tire pressure wa ...

Battery current sensor
On-vehicle inspection Check battery current sensor assembly Measure the resistance of the sensor. Standard resistance If the result is not as specified, replace the sensor assembly. Measure the resistance of the sensor. Standard resistance If the result is not as specified, ...

Back door
The back door can be locked/unlocked and opened/closed by the following procedures. Locking and unlocking the back door Door lock switch Entry function (if equipped) Wireless remote control Opening/closing the back door from inside the vehicle (vehicles with a power back door) Press a ...

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