Inspection Procedure

HINT:

According to the DATA LIST displayed by the OBD II scan tool or 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 OBD II scan tool or hand-held tester to the DLC3.
4. Turn the ignition switch to the ON position.
5. Push the "ON" button of the OBD II scan tool or the hand-held tester.
6. When you use hand-held tester:

   Select the item "DIAGNOSIS/ENHANCED OBD II/DATA LIST".

7. According to the display on tester, read the "DATA LIST".

Fig 1: Identifying Measurement Item Chart

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HINT:

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

Measure the resistance between THO1 (THO) and body ground.

Fig 2: Temperature And Malfunction Chart

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1. INSPECT TRANSMISSION WIRE (ATF TEMPERATURE SENSOR) 
   Fig 3: Identifying Tester Connection Specified Condition Chart

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   1. Disconnect the transmission wire connector from the transaxle.
   2. Measure the resistance according to the value(s) in the figure Fig 4 below.

      Standard 

      Fig 4: Identifying Tester Connection Specified Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Measure the resistance according to the value(s) in the figure Fig 5 below.

      Standard (Check for short) 

      Fig 5: Measuring Resistance

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      NG: REPAIR OR REPLACE TRANSMISSION WIRE (SEE  TRANSMISSION WIRE (U151E)  ) 

      OK: Go to next step. 

2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) 
   Fig 6: Identifying Tester Connection Specified Condition Chart

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   1. Connect the transmission wire connector to the transaxle.
   2. Disconnect the ECM connectors.
   3. Measure the resistance according to the value(s) in the figure Fig 7 below.

      Standard 

      Fig 7: Identifying Tester Connection Specified Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Measure the resistance according to the value(s) in the figure Fig 8 below.

      Standard (Check for short) 

      Fig 8: Measuring Resistance

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (SEE  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 

      OK: REPLACE ECM (SEE  ECM (3MZ-FE)  )