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NO.23 TRANSAXLE OVERHEATS [FN4A-EL]

BME050301030227

23 | Transaxle overheats
DESCRIPTION | • Burnt smell emitted from the transaxle. • Smoke 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 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.
No | Replace any malfunctioning parts.
2 | Perform the stall test. (See Stall Test.) Is the stall speed normal? | Yes | Go to the next step.
No | Repair or replace any malfunctioning parts.
3 | Inspect the value at the following PCM PID using the WDS or equivalent. (See PCM INSPECTION [L3].) • TP Is the PID value normal? | Yes | Go to the next step.
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.
No | Repair the open ground circuit. Reconnect the PCM.
5 | Inspect the LPS PID value using the WDS or equivalent. Is the LPS PID value normal? (See PCM INSPECTION [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).)
No | Repair or replace any malfunctioning parts.