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Home >> Lexus >> 2010 >> IS 250C Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Dynamic Radar Cruise Control System (Diagnostic Codes & Circuit Tests)) >> Dynamic Radar Cruise Control System >> DTC P1616: Communication Error from ECM to Distance Control ECU >> Procedure
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DTC P1616: Communication Error from ECM to Distance Control ECU: Procedure

WARNING: This page is about a different car, the 2009 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. REPLACE ECM 
    1. Replace the ECM (for 2UR-GSE). Refer to COMPONENTS .

    NEXT: Go to next step 

  2. CHECK DTC 
    1. Clear the DTC. Refer to DTC CHECK / CLEAR .
    2. Turn the cruise control main switch on.
    3. Drive the vehicle at the required speed (45 km/h (27 mph) or higher).
    4. Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR .

      Result

      Result Proceed to
      DTC P1616 is not output A
      DTC P1616 is output B

    B → See step   3 

    A → END 

  3. REPLACE DISTANCE CONTROL ECU. Refer to  COMPONENTS