AT2–96 A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING INSPECTION PROCEDURE 1 Check harness and connector between ECM and TRAC ECU (See page IN–30). OK NG Repair or replace harness or connector. 2 Check diagnostic trouble code of TRAC ECU (See page BR–128). OK NG Substitute another TRAC ECU. If the same code is still output after the diagnostic trouble code is deleted, check the contact condition of each connection. If the connections are normal, the TRAC ECU may be defective.