Inspection Procedure

HINT:

Performing the ACTIVE TEST using the hand-held tester allows the relay, VSV, actuator and so on to operate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method to shorten labor time.

It is possible to display the DATA LIST during the ACTIVE TEST.

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 / ACTIVE TEST'.
7. According to the display on tester, perform the "ACTIVE TEST".
   Fig 1: Active Test Data List Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   • This test can be conducted when the vehicle speed is 60 km/h (37 mph) or more.
   • This test can be conducted in the 5th gear.
8. Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.

   HINT:

   • When changing the accelerator pedal opening angle while driving, if the engine speed does not change, lock-up is on.
   • Slowly release, but not fully, the accelerator pedal in order to decelerate. (Fully releasing the pedal will close the throttle valve and lock-up may be turned off automatically.)
     Fig 2: Identifying Blinking Pattern (Active Test)

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. CHECK OTHER DTCS OUTPUT(IN ADDITION TO DTC P2757) 
   1. Connect the OBD II scan tool or the hand-held tester to the DLC3.
   2. Turn the ignition switch to the ON position and push the OBD II scan tool or the hand-held tester main switch ON.
   3. When you use hand-held tester:

      Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES".

   4. Read the DTCs using the OBD II scan tool or the hand-held tester.

   Result: 

   RESULT
   
   

   Display (DTC output)	Proceed to
   Only "P2757" is output	A
   "P2757" and other DTCs	B

   HINT:

   If any other codes besides "P2757" are output, perform troubleshooting for those DTCs first.

   1. B: GO TO  DIAGNOSTIC TROUBLE CODE CHART  
   2. A: GO TO NEXT STEP 
2. INSPECT SHIFT SOLENOID VALVE(SLU) 
   1. Remove the shift solenoid valve SLU.
   2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition 20°C (68°F)
      1 -2	5.0 to 5.6 Ω

   3. Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.

      OK: 

      The solenoid makes an operating sound. 

      Fig 3: Inspecting Shift Solenoid Valve (SLU)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE SHIFT SOLENOID VALVE (SLU) (SEE  TRANSMISSION VALVE BODY ASSY (A750E/A750F)  ) 
   2. OK: GO TO NEXT STEP 
3. INSPECT  TRANSMISSION VALVE BODY ASSY (A750E/A750F) 

   OK: 

   There are no foreign objects on each valve. 

   1. NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSY 
   2. OK: GO TO NEXT STEP 
4. INSPECT TORQUE CONVERTER CLUTCH ASSY (SEE  TORQUE CONVERTER CLUTCH AND DRIVE PLATE (A750E/A750F)  ) 

   OK: 

   The torque converter clutch operates normally. 

   1. OK: REPAIR OR REPLACE  AUTOMATIC TRANSMISSION ASSY (A750E (1GR-FR))  or  COMPONENTS 
   2. NG: GO TO NEXT STEP 

   REPLACE TORQUE CONVERTER CLUTCH ASSY