20

Noise occurs at idle when vehicle is stopped in all positions/ranges

DESCRIPTION

• Transmission is noisy in all positions and ranges when the vehicle is idling.

POSSIBLE CAUSE

• The malfunction is in the pressure solenoid or oil pump which causes a high-pitched noise to be emitted from the transmission at idle.

  NOTE:

  • If a noise is emitted during shifting only, the malfunction is in the C1 clutch, C2 clutch, C3 clutch, B1 brake, B2 brake, B3 brake, or B4 brake.

  • If a noise is emitted during shifting at certain gears only or during deceleration only, it is gear noise.

  • Before following the troubleshooting steps, make sure that the Automatic Transmission On-Board Diagnostic and Automatic Transmission Basic Inspection are conducted. (See BASIC INSPECTION [SJ6A-EL].)

STEP

INSPECTION

ACTION

1

• Inspect engine condition.

• Is there any engine concern (e.g. Rough idle, vibration)?

Yes

Go to appropriate symptom troubleshooting.

(See SYMPTOM DIAGNOSTIC INDEX [LF].)

No

Replace basic inspection and repair or replace any malfunctioning parts according to the inspection result

2

• Verify test results.

• If normal, return to the diagnostic index to service any additional symptoms.

• If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.

• If the vehicle is repaired, troubleshooting completed.

• If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.