DTC P0500: Vehicle Speed Sensor "A": Procedure

1. Drive the vehicle 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 engine switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine / Data List / Vehicle Speed.
6. Drive the vehicle.
7. Read the value displayed on the Techstream.

   OK

   Vehicle speeds displayed on the Techstream and speedometer display are equal.

NG → See step   2 

OK → See step   5 

1. Inspect the combination meter assembly using an oscilloscope.
   1. Move the shift lever to N.
   2. Jack up the vehicle.
   3. Turn the engine switch on (IG).
   4. Measure the voltage between the terminal of the combination meter and body ground while the while is turned slowly.
      Fig 1: Identifying Combination Meter Assembly & SPD Signal Waveform

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection	Switch Condition	Specified Condition
      L10-10 (+S) - Body ground	Engine switch on (IG)	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: Identifying L10 Combination Meter Assembly & A14 ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   L10-10 (+S) - A14-24 (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: Identifying L10 Combination Meter Assembly & A14 ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   L10-10 (+S) or A14-24 (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