DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P1630

DTC Code DTC Name
P1630 Communication Error from VSC to ECM

DESCRIPTION

The skid control ECU (brake actuator assembly) sends signals such as cruise control cancel signals and brake demand response signals to the ECM when the dynamic radar cruise control system is operating.

DTC No. Detection Item DTC Detection Condition Trouble Area
P1630 Communication Error from VSC to ECM While the dynamic radar cruise control is either preparing for operation or operating, communication data from the skid control ECU (brake actuator assembly) is logically inconsistent for a certain amount of time, the ECM stores this DTC.

  • Communication circuit

  • Skid control ECU (brake actuator assembly)

  • ECM

INSPECTION PROCEDURE

Note

If the ECM is replaced, refer to Registration Click here.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Using the Techstream, check if the CAN communication system is functioning normally Click here.


    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)


    1. Replace the brake actuator assembly Click here.


    NEXT

  3. CHECK FOR DTCS (DTC P1630)


    1. Connect the Techstream to the DLC3.

    2. Turn the engine switch on (IG).

    3. Clear the DTCs Click here.

    4. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the malfunction cannot be detected.


      1. Drive the vehicle at a speed for which cruise control operation is possible.

      2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON-OFF button).

    5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.

    6. Check for DTCs.

      Result
      Result Proceed to
      DTCs are not output A
      DTC P1630 is output (for 2AR-FE) B
      DTC P1630 is output (for 2GR-FE) C

    7. Turn the engine switch off.


    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    A

    END (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) WAS DEFECTIVE)