Monday, August 3, 2020

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 374


Text in Illustration



NG -- REPLACE ID CODE BOX (IMMOBILISER CODE ECU)



OK -- REPLACE ECM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and



Repair/Removal



4. REPLACE ID CODE BOX (IMMOBILISER CODE ECU)



(a) Replace the ID code box (immobiliser code ECU) See: Accessories and Optional Equipment/Antenna/Keyless Start Antenna/Service



and Repair/Removal.



NEXT -- Continue to next step.



5. ECU CODE REGISTRATION



(a) Register the ECU code See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Programming



and Relearning/Engine Immobilizer System.



NEXT -- Continue to next step.



6. CHECK DTC OUTPUT



(a) Clear the DTCs See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Reading and



Clearing Diagnostic Trouble Codes/Engine Immobiliser System.



(b) Recheck for DTCs See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Reading and



Clearing Diagnostic Trouble Codes/Engine Immobiliser System.



OK:



DTC B279A is not output.



NG -- REPLACE ECM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and



Repair/Removal



OK -- END (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE)



From 08/2009



THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM: B279A: Theft Deterrent System Communication Line



High Fixation



B279A - Theft Deterrent System Communication Line High Fixation



DESCRIPTION



If the communication line (EFIO - IMI) to the ID code box (immobiliser code ECU) is stuck high output (e. g. shorted to +B), the ECM stores this

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