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Home >> Lexus >> 2013 >> GS 450h >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seats >> Front Power Seat Control System (Diagnostic Codes & Symptom Tests) >> Front Power Seat Control System >> DTC U0140: Lost Communication with Body Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U1115: Lost Communication with Tilt & Telescopic Module >> Procedure
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DTC U0140: Lost Communication with Body Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U1115: Lost Communication with Tilt & Telescopic Module: Procedure

  1. CLEAR DTC 
    1. Clear the DTCs. Refer to DTC CHECK / CLEAR [03/2012 - ] .

    NEXT: Go to next step 

  2. CHECK FOR DTC 
    1. Recheck for DTCs and check if the same DTCs are output again.

      OK

      No DTCs are output.

    NG → See step   4 

    OK → See step   3 

  3. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ] 
  4. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]