NO.23 TRANSAXLE OVERHEATS[FN4A-EL]

id0503a1802800

23

Transaxle overheats

DESCRIPTION

•  Burnt smell emitted from transaxle.

•  Smoke emitted from transaxle.

POSSIBLE CAUSE

•  The malfunction is restricted to the 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.  Burnt (TCC)

•  Line pressure low

•  Control valve body malfunction

•  Accelerator cable mis-adjustment

2.  Oil cooler malfunction (Foreign material mixed in ATF)

3.  Transaxle fluid temperature sensor malfunction

4.  Excessive amount of ATF

5.  Torque converter malfunction

Note

•  Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.

Diagnostic procedure

STEP	INSPECTION		ACTION
1	Inspect for bending, damage, corrosion or kinks of the oil cooler pipes. Are oil cooler pipes normal?	Yes	Go to the next step.
1		No	Replace any malfunctioning parts.
2	Perform the stall test. (See MECHANICAL SYSTEM TEST[FN4A-EL].) Is the stall speed normal?	Yes	Go to the next step.
2		No	Repair or replace any malfunctioning parts.
3	Inspect the value at the following PCM PID using the M-MDS. (See PCM INSPECTION[ZJ, ZY, Z6].) (See PCM INSPECTION[LF, L3].) • TP • APP1 • APP2 • TP1 Is the PID value normal?	Yes	Go to the next step.
3		No	Repair or replace any malfunctioning parts.
4	Disconnect the PCM connector. Is the resistance between the ground terminal at the PCM connector and the body ground less than 5.0 ohms?	Yes	Go to the next step.
4		No	Repair the open ground circuit. Reconnect the PCM.
5	Inspect the LPS PID value. Is the LPS PID value normal? (See PCM INSPECTION[ZJ, ZY, Z6].) (See PCM INSPECTION[LF, L3].)	Yes	Overhaul the control valve body and repair or replace any malfunctioning parts. (See ATX workshop manual (FN4A-EL).) If any problem remains, overhaul the transaxle and repair or replace any malfunctioning parts. (See ATX workshop manual (FN4A-EL).)
5		No	Repair or replace any malfunctioning parts.
6	• Verify the test results. ― If normal, return to the diagnostic index to service any additional symptoms. ― If the malfunction remains, inspect the related Service information and perform repair or diagnosis. • If the vehicle is repaired, troubleshooting is completed. • If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM.