Inspection Procedure

HINT:

Performing the Active Test using the Techstream allows components, such as the relay, VSV, and actuator, to be operated without removing any parts. Performing the Active Test as the first step of troubleshooting is one method of shortening 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 Techstream to the DLC3.
4. Turn the ignition switch to ON.
5. Turn the tester on.
6. Select the following items: Powertrain / Engine and ECT / Active Test.
7. According to the display on the tester, perform the Active Test.
   ACTIVE TEST REFERENCE
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Activate the Lock Up	[Test Details] Control shift solenoid SLU to set automatic transaxle to lock-up condition. [Vehicle Condition] Vehicle Speed: 36 mph (60 km/h) or more, and 4th gear	ON/OFF	Possible to check Lock-up operation.

   HINT:

   • This test can be conducted when the vehicle speed is 36 mph (60 km/h) or less.
   • This test can be conducted in 4th gear.
8. Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.
   Fig 1: Identifying Accelerator Pedal Opening Angle Graph

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

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

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the tester on.
4. Select the following items: Powertrain / Engine and ECT / Trouble Codes.
5. Read the DTCs using the tester.

   Result 

   DTC OUTPUT REFERENCE
   
   

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

   HINT:

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

B:GO TO DTC CHART 

A: go to next step 

1. Remove shift solenoid valve SLU.
Fig 2: Identifying Shift Solenoid Valve SLU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance.

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

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

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 operating sounds. 

NG: REPLACE SHIFT SOLENOID VALVE SLU (See  DISASSEMBLY   ) 

OK: go to next step 

OK: 

There are no foreign objects on any valves and they operate smoothly. 

NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY (See  REMOVAL   ) 

OK: go to next step 

OK: 

The torque converter clutch operates normally. 

NG: REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY (See  REMOVAL   ) 

OK: REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY (See  REMOVAL   )