AT1–78 AT340E (2JZ–GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING INSPECTION PROCEDURE 1 Check throttle position signal. P Turn ignition switch ON. C Check voltage at the terminal TT of the DLC2 while gradually depressing the accelerator pedal from the fully closed position to the fully opened position. OK Voltage changes from 0 V to 8 V by stages. TT Terminal Voltage (V) 8 7 6 5 4 3 2 1 (Voltage) (Close) Throttle Valve Opening Angle(Open) Hint Do not depress the brake pedal during this test. The voltage will stay at 0 V if depressed. ON DLC2 TT E1 AB0119 AT5630 NG OK Proceed to next circuit inspection shown on matrix chart (See page AT1–58). 2 Check throttle position sensor (See page EG–219). OK NG Replace throttle position sensor. 3 Check harness and connector between ECM and throttle position sen- sor (See page IN–30). OK NG Repair or replace harness or connector. Check and replace ECM.