CRUISE CONTROL SYSTEM, Diagnostic DTC:P0503

DTC Code DTC Name
P0503 Vehicle Speed Sensor Circuit

DESCRIPTION

The skid control ECU outputs the vehicle speed signal to the ECM through the combination meter assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
P0503 Vehicle Speed Sensor Circuit Cruise control in operation: When the ECM receives sudden changes in the vehicle speed signal

  • Vehicle stability control system

  • SFI system

CAUTION / NOTICE / HINT

Note


  • This DTC may be output by the vehicle stability control system at the same time. In that case, perform troubleshooting for the vehicle stability control system first.

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE


  1. CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM)


    1. Check for DTCs.

      Click here

      Result
      Result Proceed to
      Vehicle stability control system DTCs are not output A
      Vehicle stability control system DTCs are output B

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM (DTC CHART) Click here

    A

  2. CHECK FOR DTCs (CRUISE CONTROL SYSTEM)


    1. Clear the DTCs.

      Click here

    2. 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 cruise control system on using the cruise control main switch (ON/OFF).

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

    3. Check for DTCs.

      Click here

      Result
      Result Proceed to
      DTC P0503 is not output A
      DTC P0503 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO SFI SYSTEM Click here