Toyota RAV4 manuals

Toyota RAV4 Service Manual: Engine immobiliser system malfunction

Toyota RAV4. Engine immobiliser system malfunction


Description

This dtc is output when one of the following occurs: 1) the ecm detects errors in its own communications with the transponder key ecu; 2) the ecm detects errors in the communication lines; or 3) the ecu communication id between the transponder key ecu and ecm is different and an engine start is attempted. Before troubleshooting for this dtc, make sure no transponder key ecu dtcs are present. If present, troubleshoot the transponder key ecu dtcs first.

Toyota RAV4. Engine immobiliser system malfunction


Wiring diagram

Toyota RAV4. Engine immobiliser system malfunction


Inspection procedure

  1. Check for dtc

  1. Delete the dtc (see page ei-18).
  2. Recheck for dtc.

Ok: b2799 output does not reoccur.



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

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


  1. Disconnect the e46 ecu connector.
  2. Disconnect the a9 ecm connector.
  3. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check transponder key ecu (operation)

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

Ok: engine starts normally.



End (transponder key ecu is defective)

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 ...

Security indicator light circuit
Description When the transponder key is registered, the transponder key ecu indicates the key registration condition by lighting up, blinking or turning off the security indicator. Wiring diagram ...

Other materials:

Terminals of ecu (2005/11-2006/01)
Notice: Turn the ignition switch off before measuring the resistances of the main wire and the branch wire. After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation. Before measuring the resistance, leave ...

Sliding roof control switch circuit
Description If either the sliding function or tilt function does not operate, there may be a malfunction in the sliding roof control switch circuit. Wiring diagram Inspection procedure Perform active test by intelligent tester (sliding roof operation) Select the active test, use ...

System voltage
Description The battery supplies electricity to the ecm even when the ignition switch is in the off position. This power allows the ecm to store data such as dtc history, freeze frame data and fuel trim values. If the battery voltage falls below a minimum level, the memory is cleared and ...

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