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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? (See PCM INSPECTION [L3].) | 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.