AT2–90 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING WIRING DIAGRAM ECM L 21 NCO+ E9 2 O/D Direct Clutch Speed Sensor 1 Y 1 E9 NCO- ATB618 INSPECTION PROCEDURE 1 Check resistance between terminals NCO+ and NCO- of ECM. OFF Check Harness A ECM B 1, 21 NCO- NCO+ BE6653 AT9769 P Connect the Check Harness A to the ECM (See page EG–510). C Check Resistance between terminals NCO+ and NCO- of ECM. OK Resistance: 560 — 680 NG OK Proceed to next circuit inspection shown on matrix chart (See page AT2–64). However, when diagnostic trouble code 67 is displayed, check and replace ECM. G to 2 .