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:

How to proceed with troubleshooting
Hint: Use these procedures to troubleshoot the tire pressure warning system. *: Use the intelligent tester. Vehicle brought to workshop Inspect battery voltage Standard voltage: 11 to 14 v If the voltage is below 11 v, recharge or replace the battery before proceeding. ...

Camshaft position sensor "a" circuit (bank 1 or single sensor)
Description The camshaft position (cmp) sensor consists of a magnet and an iron core which is wrapped with copper wire, and is installed onto the cylinder head. When the camshaft rotates, each of 3 teeth on the camshaft passes through the cmp sensor. This activates the internal magnet in ...

Evasion Assistant- Warning with evasion support
Display in the instrument cluster A warning symbol appears in the instrument cluster and in the Head-up Display if a collision with a detected vehicle is imminent. Symbol /Measure Symbol lights up red: prewarning. Brake and increase distance. Symbol flashes red and an acoustic signal sounds: acute ...

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