Diagnosis Procedure

DIAGNOSTIC PROCEDURE

Step	Action	YES	NO
1	CHECK CAN COMMUNICATION LINE Perform "DTC check". Refer to [SDT FUNCTION (AT) ], [DIAGNOSIS PROCEDURE WITHOUT SDT ]. Is a malfunction in the CAN communication indicated in the results?	Check CAN communication line. Refer to [DTC U1000 CAN COMMUNICATION LINE ].	GO TO 2.
2	CHECK TCM POWER SUPPLY AND GROUND CIRCUIT Check TCM power supply and ground circuit. Refer to [MAIN POWER SUPPLY AND GROUND CIRCUIT CHECK ]. OK or NG	GO TO 3.	Repair or replace damaged parts.
3	DETECT MALFUNCTION ITEM Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector. OK or NG	GO TO 4.	Repair or replace damaged parts.
4	REPLACE CONTROL VALVE WITH TCM Replace control valve with TCM. Refer to [CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2: ON-VEHICLE REPAIR ]. Perform [DTC P0734 A/T 4TH GEAR FUNCTION ]. OK or NG	INSPECTION END	Confirm malfunction phenomena by "ROAD TEST" to repair malfunctioning part. Refer to [ROAD TEST ].