CRUISE CONTROL SYSTEM (for 1WW), Diagnostic DTC:P0503

DTC Code DTC Name
P0503 Vehicle Speed Sensor Circuit Malfunction

DESCRIPTION

If a malfunction (a rapid change in vehicle speed) in the vehicle speed signal being output from the skid control ECU is detected while cruise control 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 cruise control is in operation.

  • Vehicle stability control system

  • Vehicle speed sensor signal circuit

  • Vehicle speed sensor

  • Combination meter

  • ECM

INSPECTION PROCEDURE

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 the cruise control.

    3. Check for DTCs Click here.

      OK
      DTC P0503 is not output.

    NG

    GO TO ECD SYSTEM Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here