Code No. P0500: Vehicle Speed Signal System


FUNCTION



  • The engine-ECU receives vehicle speed signal from ASC-ECU via the CAN communication.

TROUBLE JUDGMENT


Check Conditions
  • CAN communication is normal
  • Battery positive voltage is more than 10 V and is less than 16.5 V.
Judgement Criterion
  • The vehicle speed signal received for 2 seconds via CAN is abnormal.
FAIL-SAFE AND BACKUP FUNCTION
  • None.

PROBABLE CAUSES



  • Failed wheel speed sensor of ASC.
  • Failed ASC-ECU
  • Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

  • Confirm the diagnosis code is set from ASC-ECU.

Q. Is diagnosis code set?
Perform troubleshooting of the active stability control (ASC) system. (Refer to GROUP 35C - Troubleshooting - Diagnosis Code Chart ).
Go to Step 2.

STEP 2. Check the speedometer.

Q. Is the indication of speedometer normal?
Go to Step 3.
Replace the ASC-ECU.

STEP 3. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.

Q. Is diagnosis code set?
Replace the engine-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).