Inspection Procedure

HINT:

Performing Techstream's Active Test allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the Active Test early in troubleshooting is one way to save time.

The Data List can be displayed during the Active Test.

1. Warm up the engine.
2. Turn the ignition switch OFF.
3. Connect Techstream to the DLC3.
4. Turn the ignition switch ON and turn the tester ON.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test.
6. Follow the instructions on the tester and read the Active Test.
   TESTER DISPLAY - CONTROL RANGE AND DIAGNOSTIC NOTE
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Activate the Lock Up	[Test Details] Control shift solenoid DSL to set automatic transaxle to the lock-up condition [Vehicle Condition] Throttle valve opening angle: Less than 35% Vehicle speed: 60 km/h (36 mph) or more	ON/OFF	Possible to check shift solenoid valve DSL operation

   HINT:

   • This test can be conducted when the vehicle speed is 60 km/h (36 mph) or more.
   • This test can be conducted in the 3rd or 4th gear.
7. 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 the accelerator pedal in order to decelerate. (Do not fully release the pedal as that will close the throttle valve and lock-up may be turned OFF.)

Fig 1: Identifying Accelerator Pedal Opening Angle Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0741) 
   1. Connect Techstream to the DLC3.
   2. Turn the ignition switch ON and turn the tester ON.
   3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
   4. Read the DTCs using the tester.

      Result 

      DTC RESULT DESCRIPTION
      
      

      Display (DTC output)	Proceed to
      Only P0741 is output	A
      P0741 and other DTCs are output	B

      HINT:

      If any other codes besides P0741 are output, perform troubleshooting for those DTCs first.

   B: GO TO DTC CHART 

   A: Go to Next Step 

2. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE DSL) 
   1. Disconnect the B27 wire connector.
      Fig 2: Identifying B27 Wire Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance of the transmission wire.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION
      
      

      Tester Connection	Condition	Specified Condition
      3 (DSL) - Body ground	20°C (68°F)	11 to 13 Ω

   NG: Go to step  4

   OK: Go to Next Step 

3. CHECK WIRE HARNESS (TRANSMISSION WIRE - ECM) 
   1. Disconnect the B30 ECM connector.
      Fig 3: Identifying B30 ECM Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION
      
      

      Tester Connection	Condition	Specified Condition
      B30-79 (DSL) - Body ground	20°C (68°F)	11 to 13 Ω

   NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK: REPLACE ECM 

4. INSPECT SHIFT SOLENOID VALVE DSL 
   1. Remove the shift solenoid valve DSL.
   Fig 4: Identifying Shift Solenoid Valve DSL
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance of the solenoid valve.

      Standard resistance: 

      11 to 13 Ω at 20°C (68°F) 

   3. Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid body. Then check that the valve moves and makes an operating noise.

      OK: Valve moves and makes operating noise. 

   NG: REPLACE SHIFT SOLENOID VALVE DSL 

   OK: Go to Next Step 

5. CHECK TRANSMISSION WIRE 

   OK: The connectors and pins are securely installed. There is no open or short on the wire harness. 

   NG: REPAIR OR REPLACE TRANSMISSION WIRE 

   OK: Go to Next Step 

6. INSPECT TRANSMISSION VALVE BODY ASSEMBLY 
   1. Check the transmission valve body assembly.

      OK: There are no foreign objects on each valve. 

   NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY 

   OK: Go to Next Step 

7. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY 
   1. Check the torque converter clutch assembly (see TORQUE CONVERTER AND DRIVE PLATE  ).

      OK: The torque converter clutch operates normally. 

   NG: REPLACE TORQUE CONVERTER CLUTCH ASSEMBLY 

   OK: REPAIR AUTOMATIC TRANSAXLE ASSEMBLY