DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P0503

DTC Code DTC Name
P0503 Vehicle Speed Sensor Circuit Malfunction

DESCRIPTION

If a malfunction in the vehicle speed signal (a rapid change in vehicle speed) being output from the skid control ECU is detected while the cruise control system is in operation, the ECM determines there to be a momentary interruption or noise, and stores a DTC.

DTC Code DTC Detection Condition Trouble Area
P0503 A malfunction in the vehicle speed signal is detected while the cruise control system is operating.

  • Vehicle stability control system

  • ECD system

PROCEDURE


  1. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)


    1. Check for DTCs Click here.

      OK
      Vehicle stability control system DTCs are not output.

    NG

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    OK

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

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

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.


      1. Drive the vehicle at a speed of 40 km/h (25 mph) or more.

      2. Turn the cruise control switch on.

      3. Push the cruise control switch to -SET to activate cruise control.

    3. Recheck for DTCs Click here.

      OK
      DTC P0503 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    GO TO ECD SYSTEM Click here