Inspection Procedure

HINT.

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time

1. Warm up the engine
2. Turn the engine switch off.
3. Connect the Techstream to the DLC3
4. Turn the engine switch on (IG).
5. Turn the Techstream on
6. Enter the following menus Powertrain / ECT / Data List
7. According to the display on the Techstream, read the Data List.

TCM 

HINT.

• SPD (SP2) is always 0 while driving- Open or short in the sensor or circuit
• The SPD (SP2) value displayed on the tester is much lower than the actual vehicle speed Sensor trouble, improper installation, or intermittent connection trouble of the circuit

1. CHECK SPEED SENSOR TERMINAL (SP2 TERMINAL) 
   1. Disconnect the transmission wire connector.
   2. Turn the engine switch on (IG)
   3. Measure the voltage according to the value (s) in the table below

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      E47-21 (SP2B) - Body ground	Engine switch on (IG)	11 to 14 V

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

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      E47-22 (SP2O) - Body ground	Always	99 to 101 Ω

   Fig 1: Identifying Speed Sensor Terminal (SP2 Terminal)
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: Go to step  3

   OK: Go to next Step 

2. INSPECT TRANSMISSION WIRE (SPEED SENSOR SP2) 
   1. Disconnect the speed sensor (SP2) connector (See REMOVAL  )
   2. Disconnect the transmission wire connector
   3. Measure the resistance according to the value (s) in the table below

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

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

   Fig 2: Identifying Transmission Wire Connector Terminal (Speed Sensor SP2)
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE TRANSMISSION WIRE  (See REMOVAL  )

   OK: REPLACE SPEED SENSOR  (See REMOVAL  )

3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM) 
   1. Disconnect the transmission wire connector
   2. Disconnect the TCM connector
   3. Measure the resistance according to the value (s) in the table below

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      E47-21 (SP2B) - E59-23 (SP2B)	Always	Below 1 Ω
      E47-22 (SP2O) - E59-22 (SP2O)	Always	Below 1 Ω
      E47-21 (SP2B) or E59-23 (SP2B) - Body ground	Always	10 kΩ or higher
      E47-22 (SP2O) or E59-22 (SP2O) - Body ground	Always	10 kΩ or higher

   Fig 3: Identifying Transmission Wire And TCM Connector
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to next Step 

4. REPLACE TCM 
   1. Replace the TCM (See REMOVAL  )

   NEXT: PERFORM A/T CODE REGISTRATION  (See REGISTRATION  )