Perform the test with the AC OFF

HINT:

Performing the intelligent tester'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.

a. Remove the test plug on the transmission case center right side and connect SST. SST 09992-00095 (09992-00231, 09992-00271)

b. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.

c. Start the engine and warm it up.

d. Measure the line pressure with the SST.

e. Turn the intelligent tester ON.

f. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST.

g. Follow the instructions on the tester and perform the ACTIVE TEST.

2006 TRANSMISSION A750F Automatic Transaxle - Sequoia

G020657E01

Fig. 49: Identifying Line Pressure SST

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

h. Measure the line pressure with the SST.

2006 TRANSMISSION A750F Automatic Transaxle - Sequoia

TEST DETAI

LS AND DIAGNOSTIC NOTE REFERENCE

Item

Test Details

Diagnostic Note

LINE PRESS

Operate shift solenoid SLT and raise line pressure. [Vehicle Condition]

• Vehicle stopped

HINT:

OFF: Line pressure up (when Active Test of "LINE PRESS UP" is performed, ECM commands SLT solenoid to turn OFF) ON: No action (normal operation)

-

(1) "LINE PRESS UP" in the ACTIVE TEST is performed to check the line pressure changes by connecting SST to the automatic transmission, which is used in the HYDRAULIC TEST (See HYDRAULIC TEST ) as well. Please note that the pressure values in the ACTIVE TEST and HYDRAULIC TEST are different.

NG: REPLACE SHIFT SOLENOID VALVE SLT OK: GO TO NEXT STEP.

3. INSPECT SHIFT SOLENOID VALVE S1

a. Remove the shift solenoid valve S1.

b. Measure the resistance between the solenoid valve terminal and solenoid valve body. Standard resistance: 11 to 15 ohms at 20°C (68°F)

c. Connect the positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.

d. Check the operating sound of the solenoid valve. OK: The solenoid makes operating sound.

NG: REPLACE SHIFT SOLENOID VALVE S1

2006 TRANSMISSION A750F Automatic Transaxle - Sequoia

Shift Solenoid Valve S1

A110986E04

Fig. 50: Inspecting Shift Solenoid Valve S1 Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: GO TO NEXT STEP.

4. INSPECT TRANSMISSION VALVE BODY ASSEMBLY

a. Check the transmission valve body assembly.

OK: There are no foreign objects on each valve. NG: REPAIR OR REPLACE TRANSMISSION VALVE BODY ASSEMBLY OK: REPAIR OR REPLACE AUTOMATIC TRANSMISSION ASSEMBLY

2006 TRANSMISSION A750F Automatic Transaxle - Sequoia

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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