Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [GF4A-EL]
17 EXCESSIVE N TO D OR N TO R POSITION/RANGE SHIFT SHOCK
TROUBLESHOOTING HINTS
Shift shock may worsen when the fail-safe is operating. Verify the diagnostic trouble code at first. However, if no diagnostic
trouble code is output, the shift shock may worsen due to poor operation of the control valve body or sticking of the clutch.
0 Clutch burned (N->D: Forward clutch, N->R: Reverse clutch or low and reverse brake)
• Line pressure low
• Malfunction of throttle position sensor
• Malfunction of TFT sensor
• Malfunction of sensor ground
• Malfunction of pressure control solenoid valve (Sticking)
• Malfunction of pressure regulator valve (Poor operation, sticking)
• Malfunction of pressure modifier valve (Poor operation, sticking)
• Malfunction of pilot valve (Poor operation, sticking)
© Poor hydraulic operation (Malfunction in range change)
© Idle speed high
© Poor tightening torque of engine mount, exhaust mount
STEP
INSPECTION ACTION
1 Does shift shock occur only when engine
cold?
Yes Check the voltage at the following terminal of the
powertrain control module
c r 01-40B POWERTRAIN CONTROL MODULE (PCM)
INSPECTION [KL]
• Throttle position sensor signal
• TFT sensor signal
• Ground (Engine, body)
Is terminal voltage okay?
No
Go to next step
2 Perform the stall test
cr 0 5 -1 7B MECHANICAL SYSTEM TEST
[GF4A-EL], Stall Test
Is stall speed okay?
Yes
Go to next step
No Go to step 4
3 Check the voltage at the following terminals of
the powertrain control module
c r 01—40B POWERTRAIN CONTROL
MODULE (PCM) INSPECTION [KL]
• D range signal
• Load/no load distinction signal
Is terminal voltage okay?
Yes Overhaul control valve body and repair or replace any
defective parts
c r ATX workshop manual
If problem remains, overhaul transaxle and repair or
replace any defective parts
c r ATX workshop manual
No Repair or replace any defective parts
4 Check the voltage at the following terminal of
the powertrain control module
c r 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
5
Check duty of pressure control solenoid
c r 0 5 -1 7B 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
c r ATX workshop manual
If problem remains, overhaul transaxle and repair or
replace any defective parts
63
* ATX workshop manual
No Check the voltage at the following terminals of the
powertrain control module
c r 01-40B POWERTRAIN CONTROL MODULE (PCM)
INSPECTION [KL]
• Throttle position sensor signal
• Ground (Engine, body)
Repair or replace any defective parts
0 5 -0 1 B -3 4