Mazda MX-6 1998, Workshop Manual

Page: 723 / 1282

TROUBLESHOOTING [LA4A-EL]
STEP INSPECTION
ACTION
7 Torque converter component
Note
• TCC applied during shifts
• Do any of the following problems exist?
• Piston is damaged
• Pump support seal #1 (CBY) is leaking,
missing or damaged
• Case leakage
• Converter component is damaged
Yes Service as required
If heat stained, replace converter
No
The problem is not in the automatic transaxle
Go to engine symptom troubleshooting
c r 0 1 -0 1 A ENGINE SYMPTOM TROUBLESHOOTING
[FS]
11
SHIFT CONCERNS: NO FIRST GEAR ENGAGES IN HIGHER GEAR ("D” RANGE)
[TROUBLESHOOTING HINTS]
• Powertrain control system
• Internal or external shift linkage
• Control valve body
• Seals
• Direct clutch
• 2/4 band and servo
STEP INSPECTION
ACTION
Powertrain control system
Are there any problems with the following?
Electrical input/output
Vehicle wiring harness
PCM
Shift solenoid No.1 (SS1), Shift solenoid
No.2 (SS2)
Transaxle range (TR) switch
O/D OFF switch
tr 0 5 -1 7A ELECTRICAL SYSTEM
COMPONENT [LA4A-EL]
Yes Run OBD test
Perform Pinpoint tests “A and D”
i
t
0 5 -0 1 A AUTOMATIC TRANSAXLE ON-BOARD
DIAGNOSIS [LA4A-EL], Pinpoint Test
No
Go to next step
Internal or external shift linkages
• Do any of the following problems exist?
• Damaged
• Misadjusted
• Misassembled
cf
0 5 -1 8 SELECTOR LEVER
REMOVAL/INSTALLATION
Yes Service as required
After servicing linkage, verify that the TR switch is properly
adjusted
i
t
0 5 -1 7A ELECTRICAL SYSTEM COMPONENT
[LA4A-EL]
No Go to next step
Control valve body
• Do any of the following problems exist?
• Bolts are not torqued to specification
• Gaskets are damaged
• Solenoid regulator valve, shift valves are
stuck, damaged, or misassembled
• Solenoid filter gasket is damaged, or
misassembled
• Hydraulic passages are damaged
• SS1, SS2 solenoid malfunction
Yes Service as required
No
Go to next step
Mechanical
• Do any of the following problems exist?
• Seals, clutches are damaged, or worn
• Direct clutch, 2/4 band, 2/4 servo are
damaged, stuck on
Yes Service as required
No Refer to the appropriate shift for further diagnosis
Shift No shift
1-2
13
2 -3 14
3 -4
15
W 6 U 5 0 1 W A J
0 5 -0 1 A -4 8