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Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check for DTC (see DTC CHECK / CLEAR )

    OK: DTC C1231 is not output. 

    NG: GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    OK: REPLACE DRIVING SUPPORT ECU  (See REMOVAL )

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