Inspection Procedure

HINT:

According to the Data List displayed by Techstream, you can read the values of switches, sensors, actuators and so on without removing parts. Reading the Data List as the first step of troubleshooting is one method to save time.

1. Warm up the engine.
2. Turn the ignition switch OFF.
3. Connect Techstream to the DLC3.
4. Turn the ignition switch ON, and turn the tester main switch ON.
5. Enter the following menus: Powertrain/Engine and ECT/Data List.
6. According to the display on the tester, read the "Data List".

   Engine and ECT 

   NORMAL CONDITION CHART
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   SPD (SP2)	Output shaft speed/ Min. 0 km/h (0 mph) Max 255 km/h (158 mph)	Vehicle stopped 0 km/h (0 mph) (output shaft speed is equal to vehicle speed)	-

   HINT:

   • SPD (SP2) is always 0 while driving:

     Open or short in the sensor or circuit.

   • SPD (SP2) value displayed on the tester is much lower than the actual vehicle speed:

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

1. Check the speed sensor (SP2) installation.

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

NG: SECURELY INSTALL SENSOR OR REPLACE SENSOR 

Fig 1: Identifying Speed Sensor (NT) Clearance

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Disconnect the speed sensor connector from the transmission.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

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

NG: REPLACE SPEED SENSOR (SP2) 

Fig 2: Identifying Speed Sensor (SP2) Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Connect the speed sensor connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE REFERENCE
   
   

   Tester Connection	Specified Condition 20°C (68°F)
   E6-34 (SP2+) - E6-26 (SP2-)	560 to 680 Ω

4. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying ECM Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance (Check for short) 

   STANDARD RESISTANCE REFERENCE
   
   

   Tester Connection	Specified Condition
   E6-34 (SP2+) - Body ground	10 kΩ or higher
   E6-26 (SP2-) - Body ground	↑

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM