Transmission Mode Switch: Testing and Inspection

CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL, POWER and SNOW patterns, 2 position, L position and the lock-up patterns. By following the programs corresponding to the signals from the pattern select switch, the park/neutral position and other various sensors, the ECM switches the solenoid valves ON and OFF, and controls the transmission gear change and the lock-up clutch operation.




WIRING DIAGRAM

Step 1:

Step 2:

Step 3:

Step 4:

INSPECTION PROCEDURE

HINT: In case of using the LEXUS hand-held tester, start the inspection from step 1 and in case of not using the LEXUS hand-held tester, start from step 2.