Note:If ECU communication is not completed correctly,the engine will not start and DTC b2799 will be set. When the Engine ECU is replaced,ECU communication must be completed.ECU communication must be performed between the transponder ECU and the Engine ECU.Complete ECU communication using the following steps:Ī.Insert a registered Master Key into the ignition cylinder.Ĭ.Short Tc and CG terminals of DLC 3 using Diagnosis Check Wire (SST 09843-18020 or equivalent) and leave for 30 minutes.ĭ.After 30 minutes,turn ignition OFF and remove check wire from DLC3Į.Start the vehicle to confirm successful ECU communication Inside is 93C56 or 93C66 eepromĪll Toyota Lexus with OBDII connector engine ECU registration procedure The immo box is mounted in the upper centre of instrument panel. The immo box is mounted in the lower instrument panel. Location of immobox is behind steering wheel. Immo location : Behind the noise insulation coat. The control circuit of the engine immobiliser system has been integrated into the engine ECU.The engine ECU is mounted behind the passenger side glove box.Some times immobiliser system has immo box. Location of the immobox is behind the dashboard. Location of the immobox is just in the middle of the dash very deep towards the wind screen.IMMOBOX : 89780-05030, EEPROM : 24C04 If is no fault codes in immobilizer and in motor ECU is fault code “immobilizer fault B2799” – you need synchronize immo-motor ECU. Locate eeprom U7 De-solder 93c66VI Solder eeprom to coding machine Desolder and install into clusterPlug in and testCheck us out on. If Immobilizer have error code “wrong transponder” or “transponder ID is not registered” – generate new transponder from immobilizer dump.
This transponder will be car Master (Black) key.įirst make car immobilizer and motor ECU diagnostic.
Now using any transponder tool (Codereader, ZedBull, RW4 or other) write transponder data to TPX3 or EH (electronic 4D emulator).
Open immo dump with “TOYOTA 4D KEY TOOL” and push “Generate keys”. Remove immo (Transponder ID ECU) from car.
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