DTC P0500: Vehicle Speed Sensor "A" [06/2017 - ]: Procedure

1. Drive the vehicle and check whether the operation of the speedometer in the combination meter assembly is normal.

   HINT: 

   • The vehicle speed sensor is operating normally if the speedometer reading is normal.
   • If the speedometer does not operate, check it by following the procedure described for a speedometer malfunction.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / ECT / Data List / Vehicle Speed.
6. Drive the vehicle.
7. Read the value displayed on the Techstream.

   OK

   Vehicle speeds displayed on tester and speedometer display are equal.

Result: 

OK 

SYMPTOM SIMULATION AND DTC CHECK 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result: 

NG 

See step  2

1. Check the output waveform.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   1. Move the shift lever to N.
   2. Jack up the vehicle.
   3. Remove the combination meter assembly with the connector(s) still connected.
   4. Connect an oscilloscope to terminal D9-9 (+S) and body ground.
   5. Turn the engine switch on (IG).
   6. Turn a wheel slowly.
   7. Check the signal waveform according to the condition(s) in the table below.

      Item	Condition
      Measurement terminal	D9-9 (+S) - Body ground
      Tool setting	5 V/DIV., 20 ms./DIV.
      Vehicle condition	Wheel being rotated

      OK

      The waveform is similar to that shown in the illustration.

      HINT: 

      When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

      TEXT IN ILLUSTRATION
      
      

      *a	Component with harness connected (Combination Meter Assembly)

Result: 

NG 

GO TO METER / GAUGE SYSTEM (SPEED SIGNAL CIRCUIT) 

(Refer to Speed Signal Circuit [10/2014 - ] )

Result: 

OK 

See step  3

1. Disconnect the combination meter assembly connector.
2. Disconnect the TCM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   D9-9 (+S) - B2-3 (SPD)	Always	Below 1 Ω

4. Reconnect the combination meter assembly connector.
5. Reconnect the TCM connector.

Result: 

OK 

REPLACE TCM 

(Refer to COMPONENTS [10/2014 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER ASSEMBLY - TCM)