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AT-332 [EXC.F/EURO-OBD] TROUBLE DIAGNOSES FOR SYMPTOMS 5. DETECT MALFUNCTIONING ITEM 1. Remove control valve assembly. Refer to AT-410, "Control Valve Assembly and Accumulators" . 2. Check the following items: – Torque converter clutch control valve – Pilot valve – Pilot filter 3. Disassemble A/T. 4. Check torque converter and oil pump assembly. OK or NG OK >> GO TO 4 NG >> Repair or replace damaged parts. 14. Lock-up Is Not Released ECS009AK SYMPTOM: 1. CHECK THROTTLE POSITION SENSOR* CIRCUIT *: This sensor means accelerator pedal position (APP) sensor. With CONSULT-II Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage throttle position sensor circuit? Without CONSULT-II Does self-diagnosis show damage to throttle position sensor circuit? Yes or No Yes >> Check throttle position sensor circuit. Refer to . No >> GO TO 2 2. CHECK SYMPTOM Check again. OK or NG OK >> INSPECTION END NG >> 1. Perform TCM input/output signal inspection. 2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector. 15. Engine Speed Does Not Return To Idle (Light Braking D 4 → D 3 ) ECS009AL SYMPTOM: ● Engine speed does not smoothly return to idle when A/T shifts from D 4 to D 3 . ● Vehicle does not decelerate by engine brake when turning overdrive control switch OFF. ● Vehicle does not decelerate by engine brake when shifting A/T from “D” to “2” position. SCIA0706E |