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. In accordance with the display on the tester, perform the Active Test.

   HINT:

   While driving, the shift position can be forcibly changed using 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 TEST REFERENCE
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   SHIFT	[Test Details] Operate shift solenoid valve and set each shift position. [Vehicle Condition] Engine idling 30 mph (50 km/h) or less [Others] Press "→" button: Shift up Press "←" button: Shift down	1st/2nd/3rd/4th	Possible to check operation of shift solenoid valves.

   HINT:

   • This test can be conducted when the vehicle speed is 30 mph (50 km/h) or less.
   • The 3rd to 4th up-shifting must be performed with the accelerator pedal released.
   • The 4th to 3rd down-shifting 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 more than once in succession.
   • The shift position commanded by the ECM is shown in the Data List/Shift Status display on the Techstream.
   • Shift solenoid valve S1 is turned on/off normally when the shift lever is in the D position:
     SHIFT LEVER POSITION
     
     

     Gearshift controlled by ECM	1st	2nd	3rd	4th
     Shift solenoid valve S1	ON	ON	OFF	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
   P0751	A
   P0751 and other DTCs	B

   HINT:

   If any DTCs besides P0751 are output, perform troubleshooting for those DTCs first.

B: GO TO DTC CHART 

A: go to next step 

1. Remove shift solenoid valve S1.
Fig 1: Identifying Shift Solenoid Valve S1
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance.

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   Solenoid Connector (S1) - Solenoid Body (S1)	11 to 15Ω at 20°C (68°F)

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

   OK: 

   The solenoid makes operating sounds. 

NG: REPLACE SHIFT SOLENOID VALVE S1 (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: REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY (See  REMOVAL   )