DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:C1A03, C1A06

DTC Code DTC Name
C1A03 Driving Support ECU Internal Logical Error
C1A06 Stop Light Switch Input Circuit

DESCRIPTION

This DTC indicates an internal abnormality of the driving support ECU assembly.

DTC No. DTC Detection Condition Trouble Area
C1A03 While power switch is on (IG) and dynamic radar cruise control system is operating, cruise control input signal is abnormal for 1 second or more Driving support ECU assembly
C1A06 While power switch is on (IG) and dynamic radar cruise control system is operating, stop light switch input signal is abnormal for 1 second or more Driving support ECU assembly

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTCs (DTC C1A03 OR C1A06)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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 radar cruise control operation is possible.

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

      3. Push the cruise control switch to -/SET to begin control of vehicle speed using the cruise control system.

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

    6. Check for DTCs.

      Result
      Result Proceed to
      DTC is not output A
      DTC C1A03 or C1A06 is output B

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here