Inspection Procedure

HINT:

According to the DATA LIST displayed by the hand-held 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.

1. Warm up the engine.
2. Turn the ignition switch off.
3. Connect the hand-held tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.
4. Turn the ignition switch to the ON position.
5. Turn on the tester.
6. Select the item "DIAGNOSIS / ENHANCED OBD II / DATA LIST".
7. According to the display on tester, read the "DATA LIST".
   Fig 1: Inspection Procedure Data List Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

When DTC P0712 is output and OBD II scan tool or hand-held tester output is 150°C (302°F) or more, there is a short circuit.

When DTC P0713 is output and OBD II scan tool or hand-held tester output is -40°C (-40°F), there is an open circuit.

Measure the resistance between terminal THO1 (OT) and body ground.

HINT:

If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately set (in 0.5 second).

When P0713 is set, P0711 cannot be detected.

It is not necessary to inspect the circuit when P0711 is set.

1. INSPECT TRANSMISSION WIRE(ATF TEMPERATURE SENSOR) 
   1. Disconnect the transmission wire connector from the transmission.
   2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      2(OT-)-10(OT+)	79Ω to 156 kΩ
      2 (OT-) - Body ground	10 kΩ or higher
      10 (OT+) - Body ground	10 kΩ or higher

      Fig 2: Inspecting Transmission Wire (ATF Temperature Sensor)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   If the resistance is out of the specified range with either the ATF temperature shown in the table below, the driveability of the vehicle may decrease.

   ATF TEMPERATURE SPECIFICATION
   
   

   ATF Temperature	Specified Condition
   20°C (68°F)	3 to 4 kΩ
   110°C (230°F)	0.22 to 0.28 kΩ

   1. NG: REPAIR OR REPLACE  TRANSMISSION WIRE (A750E/A750F) 
   2. OK: Go to next step. 
2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) 
   1. Connect the transmission wire connector to the transmission.
   2. Disconnect the ECM connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      E5-24(THO1)-E4-28(E2)	79Ω to 156 kΩ

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

      Standard (Check for short): 

      Fig 3: Checking Harness And Connector (Transmission Wire - ECM)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Tester Connection Specified Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (SEE  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
   2. OK: GO TO NEXT STEP 

      REPLACE  ECM (1GR-FE)