AT2–111 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING O D Cancel Signal Circuit — CIRCUIT DESCRIPTION — While driving with cruise control activated, in order to minimize gear shifting and provide smooth up–hill cruising, overdrive may be prohibited temporarily in some conditions. The Cruise Control ECU sends O/D cut signals to the ECM as necessary and the ECM cancels overdrive shifting until these signals are discontinued. (For details see the cruise control section, page BE–162) — WIRING DIAGRAM — Cruise Control ECU ECM 4 — 6 V OD C16 9 BR-B 11 U2 BR-B 12 OD1 E10 Q04434 INSPECTION PROCEDURE 1 Check voltage between terminal OD1 of ECM connector and body ground. ON Check Harness A ECM A 12 OD1 BE6653 AT8774 P 1. Connect the Check Harness A to the ECM 2. Turn ignition switch ON. C Measure voltage between terminal OD1 of ECM connector and body ground. OK Voltage: 4 — 6 V NG OK Proceed to next circuit inspection shown on ma- trix chart (See page AT2–64). Go to 2 .