DTC P0500 Vehicle Speed Sensor "A": Wiring Diagram

Fig 1: Vehicle Speed Sensor - Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK OPERATION OF SPEEDOMETER 
   1. Drive the vehicle and check if 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.

   NG : CHECK SPEEDOMETER CIRCUIT 

   OK : Go to next step 

2. INSPECT ECM (SPD VOLTAGE) 
   1. Shift the transmission gear selector lever to the neutral position.
   2. Jack up the vehicle.
   3. Turn the ignition switch ON.
   4. Measure the voltage of the ECM connectors as the wheel is turned slowly.

      standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   SPD (E5-17) - E1 (E6-1)	Voltage generated intermittently

   HINT:

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

   NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

   Fig 2: Identifying Blinking Pattern - Voltage

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : REPLACE ECM