NO.20 NOISE OCCURS AT IDLE WHEN VEHICLE IS STOPPED IN ALL POSITIONS/RANGES [FN4A-EL]

BME050301030224

20

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

DESCRIPTION

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

POSSIBLE CAUSE

• The malfunction is in the oil pump which causes 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 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 engine condition.
Is there any engine concern (i. e. rough idle)?
Yes
Go to appropriate symptom troubleshooting. (See Section 0103.)
No
Go to the next step.
2
Does the noise stop when the solenoid connector is disconnected?
Yes
Go to the next step.
No
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).)
3
Inspect the value at the following PCM PIDs using the WDS or equivalent. (See PCM INSPECTION [L3].)
• TP
• VSS
• TSS
Are the PID values 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?
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.