Code No. P0500: Vehicle Speed Signal System

FUNCTION

Receives the signal from the output shaft speed sensor used for the A/T control and converts it to the vehicle speed signal, and then inputs it to the engine control system and the speedometer.

TROUBLE JUDGMENT

Check Conditions

After 2 seconds pass from when the engine has completed the starting.
The engine speed is 2, 500 - 4, 000 r/min.
Under the high load operation.

Judgment Criterion

The sensor output voltage does not vary for 4 seconds. (The pulse signal is not input.)

PROBABLE CAUSE

Failed output shaft speed sensor
Open/short circuit, in the output shaft speed sensor circuit or loose connector contact.
Failed engine-A/T-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis codes

Confirm whether the diagnosis codes are output from A/T system.

Q. Is the diagnosis code output for A/T system?

	A/T system check (Refer to GROUP 23-Diagnosis Code Classified Table.)

	Go to Step 2.

STEP 2. M.U.T.-III diagnosis code

Reconfirmation of diagnosis code.

Q. Is the diagnosis code set?

	Replace engine-A/T-ECU.

	Intermittent malfunction (Refer to GROUP 00- How to Use Troubleshooting/Inspection Service Points .)