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NO.23 TRANSAXLE OVERHEATS [JA5AX-EL]

id050305802800

23 | Transaxle Overheat
DESCRIPTION | • Burnt smell emitted from transaxle. • Smoke emitted from transaxle.
POSSIBLE CAUSE | • Malfunction is restricted to hindrance of coolant at oil cooler. In addition, overheating of transaxle may be caused by a malfunction of TFT sensor. - Line pressure low • ATF level low • Incorrect throttle position signal • Misadjustment of throttle cable - Oil cooler malfunction (Foreign material mixed in with ATF) - TFT sensor malfunction - Excessive amount of ATF Note • Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Is line pressure okay? (See Line Pressure Test.) | Yes | Go to next step.
No | Repair or replace any defective parts according to inspection results.
2 | • Is stall speed okay? (See Stall Speed Test.) | Yes | Go to next step.
No | Repair or replace any defective parts according to inspection results.
3 | • Inspect TFT sensor and related harness: vibration, intermittent open/short circuit • Is it okay? | Yes | Go to next step.
No | Repair or replace part if necessary.
4 | • Inspect pressure control solenoid circuit. • Is it okay? | Yes | Go to next step.
No | • Inspect for pressure control solenoid mechanical stuck. (See SOLENOID VALVE INSPECTION [JA5AX-EL].)
5 | • Inspect for bend, damage, corrosion or kinks of oil cooler pipes. • Are oil cooler pipes okay? | Yes | • Overhaul control valve body and repair or replace any defective parts. (See ATX Workshop Manual.) • If problem remains, replace or overhaul transaxle and repair or replace any defective parts. (See ATX Workshop Manual.)
No | 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 Informations and perform repair or diagnosis. • If vehicle repaired, troubleshooting completed. • If vehicle not repaired or additional diagnostic information not available, replace TCM.