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".
   NORMAL CONDITION CHART
   
   

   Item	Measurement Item/ Range (display)	Normal Condition
   AT FLUID TEMP	ATF Temp. Sensor Value / min.: -40°C (-40cF) max.:215°C (419°F)	Approx. 80cC (176r F) (After Stall Test)

   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.

   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 (THO) and body ground.

   MALFUNCTION CHART
   
   

   Temperature Displayed	Malfunction
   -40°C (-40°F)	Open circuit
   150°C (302°F) or more	Short circuit

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

      Standard: 

      SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      1 (THO) - 6 (E2)	79 Ω to 156 kΩ

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

      Standard (Check for short): 

      Fig 1: Item Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 2: Inspecting Transmission Wire (ATF Temperature Sensor)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. NG: REPAIR OR REPLACE TRANSMISSION WIRE (See  REPLACEMENT  ) 
      2. OK: GO TO NEXT STEP. 
2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) 
   1. Connect the transmission wire connector to the transaxle.
   2. Disconnect the ECM connector.
   3. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      E8-32 (THO) - E7 - 28 (E2)	79 Ω to 156 kΩ

      Fig 3: Tester Specification

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

      Standard (Check for short): 

      Fig 4: Checking Harness And Connector (Transmission Wire - ECM)

      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 (See  REPLACEMENT  )