Inspection Procedure

HINT:

Using the Techstream to perform Active Test allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Test early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Test.

1. Warm up the engine.
2. Turn the engine switch off.
3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG) position.
5. Turn the Techstream on.
6. Select the item "Powertrain / Engine and ECT / Active Test".
7. According to the display on tester, perform the "Active Test".

   HINT:

   While driving, the shift position can be forcibly changed with the Techstream.

   Comparing the shift position commanded by the Active Test with the actual shift position enables you to confirm the problem (See FAIL-SAFE CHART  ).

   ACTIVE CHART
   
   

   Item	Test Details	Diagnostic Note
   Control the Shift Position	[Test Details] Operate the shift solenoid valve and set the each shift position by yourself. [Vehicle Condition] IDL: ON (4th, 5th and 6th) Less than 50 km/h (31 mph) [Others] Press "→" button: Shift up Press "←" button: Shift down	Possible to check the operation of the shift solenoid valves.

   HINT:

   • This test can be conducted when the vehicle speed is 50 km/h (31 mph) or less.
   • The 4th to 5th and 5th to 6th up-shiftings must be performed with the accelerator pedal released.
   • The 6th to 5th and 5th to 4th down-shiftings must be performed with the accelerator pedal released.
   • Do not operate the accelerator pedal for at least 2 seconds after shifting and do not shift successively.
   • The shift position commanded by the ECM is shown in the Data List (Shift Status) display on the Techstream.
   • The shift solenoid valve S2 is turned on/off normally when the shift lever is in the D position:
     GEAR SHIFT POSITIONS
     
     

     ECM command gearshift	1st	2nd	3rd	4th	5th	6th
     Shift solenoid valve S2	ON	ON	OFF	OFF	OFF	ON

1. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0756) 
   1. Connect the Techstream to the DLC3.
   2. Turn the engine switch on (IG) position and push the Techstream main switch ON.
   3. When you use Techstream:

      Select the item "Powertrain / Engine and ECT / Trouble Codes".

   4. Read the DTCs using the Techstream.

      Result 

      RESULT REFERENCE
      
      

      Display (DTC output)	Proceed to
      Only "P0756" is output	A
      "P0756" and other DTCs	B

      HINT:

      If any other codes besides "P0756" are output, perform troubleshooting for those DTCs first.

   B: GO TO DTC CHART 

   A: Go to next step 

2. INSPECT SHIFT SOLENOID VALVE S2 
   1. Remove the shift solenoid valve S2.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition 20°C (68°F)
      Solenoid Connector (S2) - Solenoid Body (S2)	11 to 15 Ω

   3. Connect the positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.

      OK: 

      The solenoid makes an operating sound. 

      Fig 1: Identifying Shift Solenoid Valve S2

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE SHIFT SOLENOID VALVE S2 

   OK: Go to next step 

3. INSPECT TRANSMISSION VALVE BODY ASSEMBLY 

   OK: 

   There are no foreign objects on each valve. 

NG: REPLACE TRANSMISSION VALVE BODY ASSEMBLY 

OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY