Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [GF4A-EL]
DTC P0731 Shift solenoid A, shift solenoid B or internal parts incorrect 1GR ratio
DESCRIPTION
• Powertrain control module outputs solenoid pattern of first gear when gear ratio is other than first gear
POSSIBLE
CAUSE
• ATF level low • Control valve stuck
• Solenoid valve malfunction • Powertrain control module malfunction
• Line pressure low
STEP INSPECTION ACTION
1 Is diagnostic trouble code P0750, P0755, or
P0760 indicated? Yes Refer to flowchart for diagnostic trouble code P0750,
P0755, or P0760 and perform troubleshooting, then go to
step 9
No
Go to next step
2 Are amount and condition (color) of ATF okay?
Check for ATF leakage at transaxle connection
and gasket
Color
© T ra n s p a re n t red: Normal
© Black: Defective part in powertrain
® Light red: W ater mixed in fluid
© Reddish brown: Deteriorated ATF
tr 0 5 -1 7B AUTOMATIC TRANSAXLE FLUID
(ATF) INSPECTION [GF4A-EL]
Yes Go to next step
No Adjust ATF amount or replace ATF if necessary, then go to
step 9
• If ATF color is 2, measure line pressure at idle when
pressure is less than specification, go to step 3
• If ATF color is 3 or 4, replace ATF
3
Is turbine speed okay under following conditions?
• Connect NGS tester to data link connector
• Throttle is 2/8 open, and vehicle speed is 20
km/h (12 mph} in D range
Turbine speed
Approx. 2,100 rpm
c r 01-40B POWERTRAIN CONTROL
MODULE (PCM) INSPECTION [KL]
Yes Go to step 8
No Above specification: Go to next step
Below specification: Go to step 6
4 Check line pressure in D range (O/D OFF SW
OFF)
• Is line pressure okay?
c r 0 5 -17B MECHANICAL SYSTEM TEST
[GF4A-EL], Line Pressure Test
Yes
Go to next step
No
Repair or replace any defective parts, then go to step 9
• Line pressure is low only when in D ro 2 range: ATF
leakage in forward clutch circuit
5 Check stall speed in D range (O/D OFF SW OFF)
• Is stall speed okay?
o - 0 5 -1 7B MECHANICAL SYSTEM TEST
[GF4A-EL], Stall Test
Yes
Go to next step
No Repair or replace any defective parts, then go to step 9
• High in all range: Shifting of forward clutch, one-way
clutch 1
• High in D range: Shifting of one-way clutch 2
6 Inspect operation of shift solenoid A, B, C
• Disconnect negative battery cable
• Disconnect solenoid connector
• Is it operating okay?
cr 0 5 -1 7B SOLENOID VALVES INSPECTION
[GF4A-EL]
Yes Go to next step
No
Replace shift solenoid A, B, or C, then go to step 9
zr 0 5 -1 7B SOLENOID VALVES
REMOVAL/INSTALLATION [GF4A-EL]
7
Check operation of each valve and inspect return
spring
• Is each valve operating okay and is return
spring okay?
Yes Go to next step
No
Repair or replace control valve and replace return spring,
then go to step 9
8
After diagnostic trouble code has been cleared,
recheck if diagnostic trouble code is shown
w 0 1 -0 1
B ENGINE ON-BOARD DIAGNOSIS
[KL]
Yes Return to step 3
No
Problem is a temporary slip of clutch, and should be
investigated further, then go to next step
9 Erase diagnostic trouble code from memory. Can
code be output after performing “After Repair
Procedure”?
Yes
Go to appropriate inspection procedure
No Finished
0 5 -0 1 B -9