Diagnosis Procedure

Step	Action	Yes	No
1	CHECK INPUT SIGNAL Turn ignition switch ON. Select "MAIN SIGNALS" in "Data list" mode for "AT" with SDT. Start engine. Read out the value of "TCC SOLENOID" while driving. OK or NG	GO TO 4.	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	GO TO 3.	Repair or replace damaged parts.
3	DETECT MALFUNCTIONING ITEM Check the following The A/T assembly harness connector pin terminals for damage or loose connection with harness connector. OK or NG	Replace the control valve with TCM. Refer to [CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2: ON-VEHICLE REPAIR ]	Repair or replace damaged parts.
4	CHECK DTC Perform "DTC Confirmation Procedure". * Refer to [Diagnosis Procedure ]. OK or NG	INSPECTION END	GO TO 2.