ADAPTIVE VARIABLE SUSPENSION SYSTEM, Diagnostic DTC:C1784

DTC Code DTC Name
C1784 Steering Angle Sensor Communication Error

DESCRIPTION

Steering angle sensor (spiral with sensor cable sub-assembly) signals are sent to the absorber control ECU via CAN communication.

When there is a communication malfunction, the malfunction will be detected by the diagnosis function.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Note
C1784 Steering Angle Sensor Communication Error A steering angle sensor (spiral with sensor cable sub-assembly) signal malfunction is detected, or a steering angle sensor (spiral with sensor cable sub-assembly) power malfunction signal is detected for 5 seconds or more.

  • CAN communication system

  • Brake control system (steering angle sensor (spiral with sensor cable sub-assembly) circuit)

  • Absorber control ECU

 Does not come on -

CAUTION / NOTICE / HINT

Note


  • When replacing the steering angle sensor (spiral with sensor cable sub-assembly), confirm that the replacement part is of the correct specification.

  • Before performing troubleshooting, inspect the connectors of related circuits.

  • If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first.

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  • Before replacing the absorber control ECU, perform all of the following again: 1) symptom simulation; 2) DTC inspection; and 3) GTS inspection (ECU Data List or Active Test Click here). If no malfunctions are found in other areas, replace the absorber control ECU.

  • When the absorber control ECU is replaced, switch to test mode and check that all test mode DTCs are cleared when their respective deletion conditions are met.

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PROCEDURE


  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)


    1. Check for DTCs.

      Click here


      Chassis > Air suspension > Trouble Codes
      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output B

    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    A

  2. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)


    1. Check for steering angle sensor (spiral with sensor cable sub-assembly) malfunction DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    A

    REPLACE ABSORBER CONTROL ECU Click here

    B

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