Inspection Procedure

1. DATA LIST 

   HINT:

   According to the DATA LIST displayed by the intelligent tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time.

   NOTE: In DATA LIST TABLE  below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
   1. Warm up the engine.
   2. Turn the engine switch off.
   3. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.
   4. Turn the engine switch on (IG) position.
   5. Turn on the tester.
   6. Select the item "DIAGNOSIS / ENHANCED OBD II / DATA LIST".
   7. According to the display on the tester, read the "DATA LIST".
      DATA LIST TABLE
      
      

      Item	Measurement Item/Range (display)	Normal Condition
      SPD (NT)	Input Turbine Speed/display: 50 r/min	HINT: Lock-up ON (After warming up the engine); Input Turbine speed (NT) equal to the engine speed. Lock-up OFF (Idling at N position); Input Turbine speed (NT) nearly equal to the engine speed.

      HINT:

      • SPD (NT) is always 0 while driving:

        Open or short in the sensor or circuit.

      • SPD (NT) is always more than 0 and less than 300 rpm while driving the vehicle at 50 km/h (31 mph) or more:

Sensor trouble, improper installation, or intermittent connection trouble of the circuit.

1. INSPECT SPEED SENSOR INSTALLATION 
   1. Check the speed sensor (NT) installation.

   OK: 

   The installation bolt is tightened properly and there is no clearance between the sensor and transmission case. 

   Fig 1: Inspecting Speed Sensor Installation

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   NG: SECURELY INSTALL SPEED SENSOR OR REPLACE SPEED SENSOR 

   OK: Go To Next Step 

2. INSPECT SPEED SENSOR (NT) 
   1. Disconnect the speed sensor connector from the transmission.
   2. Measure the resistance according to the value(s) in TERMINAL CONDITION SPECIFIED CONDITION TABLE  .

   Standard resistance 

   SPEED SENSOR (NT)
   
   

   Tester Connection	Specified Condition 20°C (68°F)
   1 - 2	560 to 680 ohms

   Fig 2: Inspecting Speed Sensor (NT)

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   NG: REPLACE SPEED SENSOR (NT) 

   OK: Go To Next Step 

3. CHECK HARNESS AND CONNECTOR (SPEED SENSOR - ECM) 
   1. Connect the speed sensor connector.
   2. Disconnect the ECM connector.
   3. Measure the resistance according to the value(s) in SPEED SENSOR - ECM (RESISTANCE)  .

      Standard resistance 

      SPEED SENSOR - ECM (RESISTANCE)
      
      

      Tester Connection	Specified Condition 20°C (68°F)
      E4-21 (NT+) - E4-20 (NT-)	560 to 680 ohms

      Fig 3: Checking Harness And Connector (Speed Sensor - ECM)

      Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
   4. Measure the resistance according to the value(s) in SPEED SENSOR - ECM (CHECK FOR SHORT)  .

      Standard resistance (Check for short) 

   SPEED SENSOR - ECM (CHECK FOR SHORT)
   
   

   Tester Connection	Specified Condition
   E4-21 (NT+) - Body ground	10 k ohms or higher
   E4-20 (NT-) - Body ground

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE ECM