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 NO.23 TRANSAXLE OVERHEATS [JA5AX-EL]

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?
Yes
Go to next step.
No
Repair or replace any defective parts according to inspection results.
2
• Is stall speed okay?
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.
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.