Mazda RX-8 Workshop Manual page 2110

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2011 - RX-8 - Transmission/Transaxle
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
POSSIBLE
CAUSE
Diagnostic procedure
STEP
1 Inspect engine
condition.
Is there any engine
concern (e.g. Rough
idle, vibration)?
2 Verify test results.
Transmission is noisy in all positions and ranges when the vehicle is idling.
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
INSPECTION
BASIC INSPECTION [SJ6A-EL].)
YesGo to appropriate symptom troubleshooting.
(See SYMPTOM DIAGNOSTIC INDEX
No Replace basic inspection and repair or replace any
malfunctioning parts according to the inspection result
ACTION
[13B-MSP].)