Inspection Procedure

HINT:

Performing the ACTIVE TEST using the intelligent 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 engine switch off.
3. Connect the intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.
4. Turn the engine switch on (IG) position.
5. Turn on the tester.
6. Select the item "DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST".
7. According to the display on the tester, perform the "ACTIVE TEST".
   DIAGNOSTIC ACTIVE TEST
   
   

   Item	Test Details	Diagnostic Note
   LOCK UP	[Test Details] Control the shift solenoid SLU to set the automatic transmission to the lock-up condition. [Vehicle Condition] Throttle valve opening angle: Less than 35% Vehicle Speed: 60 km/h (37 mph) or more	Possible to check the SLU operation.

   HINT:

   • This test can be conducted when the vehicle speed is 58 km/h (36 mph) or more.
   • This test can be conducted with the 5th or 6th gear.
8. Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.
   Fig 1: Identifying Accelerator Pedal Opening Angle & Engine Speed Graph

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   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.)

1. Connect the OBD II scan tool or the intelligent tester to the DLC3.
2. Turn the engine switch on (IG) position and push the OBD II scan tool or the intelligent tester main switch ON.
3. When you use intelligent tester:

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

4. Read the DTCs using the OBD II scan tool or the intelligent tester.

Result 

HINT:

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

B: GO TO  DIAGNOSTIC TROUBLE CODE TABLE  

A: Go To Next Step 

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

   Standard resistance 

   SHIFT SOLENOID VALVE SLU
   
   

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

   Fig 2: Inspecting Shift Solenoid Valve SLU

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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. 

NG: REPLACE SHIFT SOLENOID VALVE SLU 

OK: Go To Next Step 

OK: 

There are no foreign objects on each valve. 

NG: REPLACE TRANSMISSION VALVE BODY ASSEMBLY 

OK: Go To Next Step 

1. Check the torque converter clutch assembly (See INSPECTION  ).

OK: 

The torque converter clutch operates normally. 

NG: REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY 

OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY