DTC P0500: Vehicle Speed Sensor "A"; DTC P0502: Vehicle Speed Sensor "A" Circuit Low; DTC P0503: Vehicle Speed Sensor "A" Intermittent / Erratic / High [11/2021 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / ECT / Data List / SP2 Sensor Voltage.
5. Read the Data List according to the display on the Techstream.

   Powertrain > ECT > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   SP2 Sensor Voltage	SP2 sensor voltage	Min.: 0.000 V Max.: 5.000 V	Idling: 0.1 to 1.9 V	-

   Powertrain > ECT > Data List 

   Tester Display
   SP2 Sensor Voltage

   Result

   Result	Proceed to
   Data List value is normal	A
   Data List value is not normal	B

Result: 

A 

See step  5

Result: 

B 

See step  2

1. Disconnect the F175 transmission wire connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Transmission Wire)

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F175-22 (SP2O) - Body ground	Always	99 to 101 Ω

3. Turn the engine switch on (IG).
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   F175-21 (SP2B) - Body ground	Engine switch on (IG)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  4

Result: 

OK 

See step  3

1. Disconnect the transmission revolution sensor (SP2) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Transmission Revolution Sensor (SP2))
   *b	Component without harness connected (Transmission Wire)

   Refer to REMOVAL [11/2021 - ]

2. Disconnect the F175 transmission wire connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Terminal 1 of the transmission revolution sensor (SP2) connector - 21 (SP2B)	Always	Below 1 Ω
   Terminal 2 of the transmission revolution sensor (SP2) connector - 22 (SP2O)	Always	Below 1 Ω
   Terminal 1 of the transmission revolution sensor (SP2) connector or 21 (SP2B) - Body ground	Always	10 kΩ or higher
   Terminal 2 of the transmission revolution sensor (SP2) connector or 22 (SP2O) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE TRANSMISSION REVOLUTION SENSOR (SP2). Refer to  COMPONENTS [11/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE TRANSMISSION WIRE. Refer to  COMPONENTS [11/2021 - ] 

1. Disconnect the F175 transmission wire connector.
2. Disconnect the F156 TCM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F175-21 (SP2B) - F156-23 (SP2B)	Always	Below 1 Ω
   F175-22 (SP2O) - F156-22 (SP2O)	Always	Below 1 Ω
   F175-21 (SP2B) or F156-23 (SP2B) - Body ground	Always	10 kΩ or higher
   F175-22 (SP2O) or F156-22 (SP2O) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - TCM) 

Result: 

OK 

See step  5

1. Replace the TCM.

   Refer to COMPONENTS [11/2021 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM A/T CODE REGISTRATION. Refer to  REGISTRATION [11/2021 - ]