AT1-95 AT340E (2JZ-GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING TT Terminal Circuit CIRCUIT DESCRIPTION Checks of ECM input and output signals related to the throttle position sensor, brakes, shift position and other circuits can be performed by measuring the voltages at terminal TT of the DLC2 WIRING DIAGRAM DLC2 TT 5 GR-R E1 3 BR 6 LJ1 18 LJ1 GR-R BR BR ED 17 E10 TT 69 E9 E1 ECM B+ Q04358 INSPECTION PROCEDURE 1 Check harness and connector between ECM and DLC2 and body ground (See page IN-30). OK NG Repair or replace harness or connector. Check and replace ECM.