NO.23 TRANSAXLE OVERHEATS [FS5A-EL]

id050308802800

23

Transaxle overheats

DESCRIPTION

•  Burnt smell emitted from the transaxle.

•  Smoke is emitted from the 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 TFT sensor.

1.  Burnt (TCC)

•  Line pressure low

•  Control valve body malfunction

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

3.  TFT 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. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FS5A-EL].) (See BASIC INSPECTION [FS5A-EL].)

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	Repair or replace any malfunctioning parts.
2	Perform the stall test. (See MECHANICAL SYSTEM TEST [FS5A-EL].) Is the stall speed normal?	Yes	Go to the next step.
2		No	Repair or replace any malfunctioning parts.
3	Inspect the APP PID value using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [LF, L5].) (See ON-BOARD DIAGNOSTIC TEST [MZR 2.0 DISI i-stop].) Is the PID value normal? (See PCM INSPECTION [LF, L5].) (See PCM INSPECTION [MZR 2.0 DISI i-stop].)	Yes	Go to the next step.
3		No	Repair or replace any malfunctioning parts.
4	Disconnect the TCM connector. Measure the resistance between ground terminal at the TCM connector and body ground. Is the resistance less than 5.0 ohms?	Yes	Go to the next step.
4		No	Repair or replace the wiring harness for a possible open circuit.
5	Inspect the LPS PID value using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [FS5A-EL].) Is the PID value normal?	Yes	Overhaul the control valve body and repair or replace any malfunctioning parts. (See ATX workshop manual [FS5A-EL].) If any problem remains: • Overhaul the transaxle and repair or replace any malfunctioning parts. (See ATX workshop manual [FS5A-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 TCM. (See TCM REMOVAL/INSTALLATION [FS5A-EL].)