NO.20 NOISE OCCURS AT IDLE WHEN VEHICLE IS STOPPED IN ALL POSITIONS/RANGES (GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL]


20	Noise occurs at idle when vehicle is stopped in all positions/ranges
DESCRIPTION	• Transaxle noisy in all positions and ranges when vehicle is idling.
POSSIBLE CAUSE	• The oil pump may cause a high-pitched noise to be emitted from the transaxle at idle. Note • If a noise is emitted during shifting only, the malfunction is in shift solenoid D, E or shift solenoid A, B, C. If a noise is emitted during shifting at certain gears only or during deceleration only, it is gear noise. • Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION (GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL].)


STEP	INSPECTION		ACTION
1	Inspect engine condition. Is there any engine concern (i. e. rough idle)?	Yes	Go to appropriate symptom troubleshooting.
1		No	Go to next step.
2	Does noise stop when transaxle connector is disconnected?	Yes	Go to next step.
2	Does noise stop when transaxle connector is disconnected?	No	Overhaul control valve body and repair or replace any defective parts. (See ATX Workshop Manual (FN4A-EL).) If problem remains, overhaul transaxle and repair or replace any defective parts. (See ATX Workshop Manual (FN4A-EL).)
3	Check the value at the following. PCM PIDs (using WDS or equivalent): • APP1 • APP2 • TP_REL • VSS Terminal voltage: • TCM terminal 2I, 2K (TSS sensor) (See TCM INSPECTION (GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL].) Are they okay?	Yes	Go to next step.
3		No	Repair or replace any defective parts.
4	Disconnect TCM. Is resistance between ground terminal 1P or 1O at TCM connector and body ground less than 5.0 ohms?	Yes	Go to next step.
4		No	Repair harness. Reconnect TCM.
5	Inspect pressure control solenoid circuit. Is it okay?	Yes	Overhaul control valve body and repair or replace any defective parts. (See ATX Workshop Manual (FN4A-EL).) If problem remains, overhaul transaxle and repair or replace any defective parts. (See ATX Workshop Manual (FN4A-EL).)
5	Inspect pressure control solenoid circuit. Is it okay?	No	Repair or 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 Bulletins and/or On-line Repair Information and perform repair or diagnosis. • If vehicle repaired, troubleshooting completed. • If vehicle not repaired or additional diagnostic information not available, replace TCM.