DTC P0500: Vehicle Speed Sensor "A": Procedure

1. Drive the vehicle and check whether the operation of the speedometer in the combination meter 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 in speedometer malfunction.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON.
4. Turn the Techstream on.
5. Select the following menu items: Powertrain / Engine / Data List / Vehicle Speed.
6. Drive the vehicle.
7. Read the value displayed on the tester.

   OK

   Vehicle speeds displayed on tester and speedometer display are equal.

   Result

   Result	Proceed to
   NG	A
   OK	B

B → See step   5 

A: Go to next step 

1. Inspect the combination meter using an oscilloscope.
   Fig 1: Checking Combination Meter Assembly (SPD Signal Waveform)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Shift the transmission gear selector lever to the neutral position.
   2. Jack up the vehicle.
   3. Turn the ignition switch to ON.
   4. Measure the voltage between the terminal of the combination meter and body ground while the wheel is turned slowly.

      Standard voltage

      Tester Connection	Condition	Specified Condition
      +S (F2-12) - Body ground	Ignition switch ON	Voltage generated intermittently

      HINT: 

      The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly.

NG → See step   4 

OK: Go to next step 

1. Disconnect the combination meter connector.
   Fig 2: Checking Harness And Connector (Combination Meter Assembly - ECM)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector.
3. Measure the resistance.

   Standard resistance (Check for open)

   Tester Connection	Condition	Specified Condition
   F2-12 (+S) - A55-8 (SPD)	Always	Below 1 Ω

4. Reconnect the combination meter connector.
5. Reconnect the ECM connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   6 

1. Disconnect the combination meter connector.
   Fig 3: Checking Harness And Connector (Combination Meter Assembly - ECM)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector.
3. Measure the resistance.

   Standard resistance (Check for short)

   Tester Connection	Condition	Specified Condition
   F2-12 (+S) or A55-8 (SPD) - Body ground	Always	10 kΩ or higher

4. Reconnect the combination meter connector.
5. Reconnect the ECM connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   7