NO.20 NOISE OCCURS AT IDLE WHEN VEHICLE IS STOPPED IN ALL POSITIONS/RANGES [SJ6A-EL]


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 ENGINE SYMPTOM TROUBLESHOOTING [L8, LF].)
1		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 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.