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Home >> Lexus >> 2010 >> RX 350 FWD >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Air Suspension (Diagnostic Codes) >> Air Suspension System >> DTC C1781: Suspension Control ECU Malfunction (TO 08/2009) >> Procedure

DTC C1781: Suspension Control ECU Malfunction (TO 08/2009): Procedure

  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check the CAN communication system for any malfunctions. Refer to DIAGNOSIS SYSTEM .

      Result

      Condition Proceed to
      CAN communication system is normal A
      CAN communication system is malfunctioning B

    B → See step   3 

    A → See step   2 

  2. REPLACE SUSPENSION CONTROL ECU. Refer to  REMOVAL 
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING