AT2–106 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING INSPECTION PROCEDURE 1 Check A/T fluid temp. sensor (See page AT2–70). OK NG Replaces A/T fluid temp. sensor. 2 Check if A/T fluid temp. is too hot. ON Pattern "MANU" Mode O/D Main Select Switch Indicator Light Switch Point MANU MANU BE6653 GO4452 P 1. Turn ignition switch ON. 2. Check "MANU" mode indicator light when pattern select switch is pushed in to ON. OK "MANU" mode indicator light comes on and stays on. Hint If the A/T fluid temp. becomes too hot, the "MANU" mode indicator light flashes for several seconds and goes off. The driving mode then automatically changes from Manual mode to the Normal mode. OK NG Wait until the A/T fluid temp. is reduced. 3 Check voltage between terminal M of ECM connector and body ground. ON Check Harness A ECM M A 18 BE6653 AT8772 P 1. Connect the Check Harness A to the ECM (See page EG–510). 2. Turn ignition switch ON. C Measure voltage between the terminal M of the ECM connector and body ground when the pattern select switch is set to the MANU (MANUAL) position and NORM (NORMAL) position. OK Pattern select switch Voltage MANU 10 — 14 V NORM Below 1 V Hint The ECM uses the Normal pattern signal if the Manual signal is not input. NG OK Proceed to next circuit inspection shown on matrix chart (See page AT2–64). Go to step. 4.