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Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control >> Active Height Control Suspension >> DTC C1784 Steering Angle Sensor Communication Error >> Inspection Procedure
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Inspection Procedure

NOTE:
  • Before performing troubleshooting, inspect the connectors of related circuits.
  • If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration Must be performed (See INITIALIZATION ).
  1. CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM) 
    1. Check if a steering sensor malfunction DTC is output under the vehicle stability control system (See DTC CHECK/CLEAR ).

    Result 

    RESULT REFERENCE

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

    B: GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART)  (See DIAGNOSTIC TROUBLE CODE CHART )

    A: Go to next Step 

  2. CLEAR DTC 
    1. Clear the DTCs (See DTC CHECK/CLEAR ).
  3. CHECK DTC 
    1. Check for DTCs.

    Result 

    RESULT REFERENCE

    Result Proceed to
    DTC C1784 is output A
    DTC C1784 is not output B

    B: USE SIMULATION METHOD TO CHECK  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: REPLACE SUSPENSION CONTROL ECU  (See REMOVAL )

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