INTELLIGENT PARKING ASSIST SYSTEM, Diagnostic DTC:C1611

DTC Code DTC Name
C1611 ECU Malfunction

DESCRIPTION

This DTC is stored if the parking assist ECU judges that there is an internal malfunction as a result of its self check.

Tech Tips

The parking assist ECU stores different types of information during initialization. If the parking assist ECU cannot read the stored information when it is activated, the parking assist ECU judges that there is an internal malfunction and stores this DTC.

DTC No. DTC Detection Condition Trouble Area
C1611

When one of the following conditions is met:


  • ROM/SUM check malfunction

  • Mirror check malfunction

  • High-speed RAM check malfunction

  • EEPROM (Initial read) malfunction

  • RAM check malfunction

  • CPU busy malfunction

  • CPU communication malfunction

  • Integer arithmetic malfunction

  • FPU calculation malfunction

  • ASIC output malfunction

 Parking assist ECU

INSPECTION PROCEDURE

Note


  • When the "System initializing" message is displayed on the navigation ECU sub-assembly after the auxiliary battery cable has been disconnected, correct the steering angle neutral point Click here.

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the intelligent parking assist system may be needed Click here.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Chassis / Intelligent Parking Assist / Data List.

    5. Check the Data List for proper functioning of the following items.

      Intelligent Parking Assist
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ROM/SUM Check Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      Mirror Check Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      High-Speed RAM Check Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      EEPROM Status (Initial read) Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      RAM Check Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      CPU Busy Status Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      CPU Communication Status Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      Integer Arithmetic Status Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      FPU Calculation Status Parking assist ECU information/OK or NG

      OK: Parking assist ECU is normal

      NG: Parking assist ECU is abnormal

      		 -
      ASIC Output Status Output condition of camera display signal/OK or NG

      OK: Output condition of camera display signal is normal

      NG: Output condition of camera display signal is abnormal

      		 -
      Result
      Result Proceed to
      OK is displayed for all items. A
      NG is displayed for EEPROM status (Initial read). A
      NG is displayed for items other than EEPROM status (Initial read). B

    B

    REPLACE PARKING ASSIST ECU Click here

    A

  2. ADJUST SETTINGS (PARKING ASSIST ECU INITIALIZATION)

    Tech Tips


    • The parking assist ECU stores different types of information during initialization. If the parking assist ECU cannot read the stored information when it is activated, the parking assist ECU judges that there is an internal malfunction and stores this DTC.

    • If the parking assist ECU cannot read the stored information when it is activated, allowing the ECU to store the information again may return the system to normal.


    1. Use the transition of diagnosis screens (note which transition pattern occurs) to confirm if the parking assist ECU was able to properly store the information from initialization Click here.

      Tech Tips

      The procedure to make the parking assist ECU store the vehicle information differs when the parking assist ECU has stored the information (initialized) and when the information has not been stored (not initialized).

    2. Perform the following procedure depending on the memory conditions to register the vehicle information into the parking assist ECU.

      Condition Procedure
      Not initialized

      Parking assist ECU initialization Click here

      Initialized

      • Height control sensor vehicle height difference setting Click here

      • Rear television camera optical axis adjustment Click here

      • Steering angle setting Click here


    NEXT

  3. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1611 is output A
      DTCs are not output B

      Tech Tips


      • If DTC C1611 is output, perform the procedure to allow the parking assist ECU to store the vehicle information again.

      • If DTC C1611 is still output after performing the procedure to make the parking assist ECU store the vehicle information 3 times, replace the parking assist ECU.

      • If DTC C1611 is output frequently, replace the parking assist ECU even though the DTC is not output when rechecking for DTCs.


    B

    END

    A

    REPLACE PARKING ASSIST ECU Click here