Noise At Idle When Vehicle Stopped
WARNING: This page is about a different car, the 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Malfunction is in pressure solenoid or oil pump, which causes a high-pitched noise to be emitted from transaxle at idle. If noise is emitted during shifting only, fault is in shift solenoid "A", "B" or "C". If a noise is emitted during shifting at certain gears only or during deceleration only, it is gear noise.