NO.23 TRANSAXLE OVERHEATS (GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL]


23	Transaxle overheats
DESCRIPTION	• Burnt smell emitted from transaxle. • Smoke emitted from transaxle.
POSSIBLE CAUSE	• The malfunction is restricted to hindrance of coolant at the oil cooler. In addition, overheating of the transaxle may be caused by a malfunction of the transaxle fluid temperature sensor. 1. Burned (TCC) • Line pressure low • Control valve body malfunction 2. Oil cooler malfunction (Foreign material mixed ATF) 3. Transaxle fluid temperature sensor malfunction 4. Excessive amount of ATF 5. Torque converter malfunction Note • Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION (GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL].)


STEP	INSPECTION		ACTION
1	Inspect for bends, damage, corrosion or kinks of oil cooler pipes. Are oil cooler pipes okay?	Yes	Go to next step.
1		No	Replace any defective parts.
2	Perform stall test. Is stall speed okay?	Yes	Go to next step.
2	Perform stall test. Is stall speed okay?	No	Repair or replace any defective parts.
3	Check value at the following PCM PIDs using the WDS or equivalent. • APP1 • APP2 Are PID values okay?	Yes	Go to next step.
3		No	Repair or replace any defective parts.
4	Disconnect TCM. Is resistance between ground terminal 1P or 1O at TCM connector and body ground less than 5.0 ohms?	Yes	Go to next step.
4		No	Repair harness. Reconnect TCM.
5	Inspect pressure control solenoid circuit. Is it okay?	Yes	Overhaul control valve body and repair or replace any defective parts. (See ATX Workshop Manual (FN4A-EL).) If problem remains, overhaul transaxle and repair or replace any defective parts. (See ATX Workshop Manual (FN4A-EL).)
5	Inspect pressure control solenoid circuit. Is it okay?	No	Repair or replace any defective parts.
6	• Verify test results. - If okay, return to diagnostic index to service any additional symptoms. - If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. • If vehicle repaired, troubleshooting completed. • If vehicle not repaired or additional diagnostic information not available, replace TCM.