ACTIVE HEIGHT CONTROL SUSPENSION, Diagnostic DTC:C1787

DTC Code DTC Name
C1787 Forward/Rearward/Sideways G Sensor Communication Error

DESCRIPTION

The suspension control ECU receives signals from the yaw rate sensor via CAN communication.

DTC Code Detection Condition Trouble Area
C1787 While the engine switch is on (IG), the yaw rate sensor malfunction signal is detected for 1 second or more.

  • Vehicle stability control system

  • Suspension control ECU

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 Click here.

PROCEDURE


  1. CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM)


    1. Check if a yaw rate sensor malfunction DTC is output under the vehicle stability control system Click here.

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

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    A

  2. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  3. CHECK DTC


    1. Check for DTCs.

      Result
      Result Proceed to
      DTC C1787 is output A
      DTC C1787 is not output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

    REPLACE SUSPENSION CONTROL ECU Click here