Mazda MX-6 1998, Workshop Manual

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TROUBLESHOOTING [GF4A-EL]
20 NOISE AT IDLE WHEN VEHICLE STOPPED IN ALL POSITIONS/RANGES
TROUBLESHOOTING HINTS
The malfunction is in the line pressure solenoid valve or 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 A, B or C. If a noise is emitted during shifting at
certain gears only or during deceleration only, it is gear noise.
STEP
INSPECTION
ACTION
1
Does noise stop when solenoid connector is
disconnected?
Yes Go to next step
No Overhaul control valve body and repair or replace any
defective parts
xt
ATX workshop manual
If problem remains, overhaul transaxle and repair or
replace any defective parts
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2 Check the voltage at the following terminal of
the powertrain control module
p - 01-40B POWERTRAIN CONTROL
MODULE (PCM) INSPECTION [KL]
• Pressure control solenoid signal
Is terminal voltage okay?
Yes Go to next step
No Repair or replace any defective parts
3 Check duty of pressure control solenoid
cr 0 5 -17B SOLENOID VALVES
INSPECTION [GF4A-EL], Pressure
Control Solenoid Output Duty Inspection
Is duty okay?
Yes Overhaul control valve body and repair or replace any
defective parts
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ATX workshop manual
If problem remains, overhaul transaxle and repair or
replace any defective parts
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ATX workshop manual
No Go to next step
4 Check the voltage at the following terminals of
the powertrain control module
sr 0 1 -40B POWERTRAIN CONTROL
MODULE (PCM) INSPECTION [KL]
• Throttle position sensor signal
• Vehicle speedometer sensor signal
• Input/turbine speed sensor signal
• Ground (Engine, body)
Is terminal voltage okay?
Yes
Replace powertrain control module
st
01-40B POWERTRAIN CONTROL MODULE (PCM)
REMOVAL/INSTALLATION [KL]
No Repair or replace any defective parts
21 NOISE AT IDLE WHEN VEHICLE STOPPED IN D, 2 ,1 , RANGES, AND/OR IN R POSITION_____________________
TROUBLESHOOTING HINTS
Although the malfunction is basically the same as for No.20 “NOISE AT IDLE WHEN VEHICLE STOPPED IN ALL
POSITIONS/RANGES”, other causes may include selector lever position disparity or transaxle range switch position disparity.
0 5 -0 1 B -3 6