Mazda MX-6 1998, Workshop Manual

Page: 724 / 1282

TROUBLESHOOTING [LA4A-EL]
12 SHIFT CONCERNS: NO FIRST GEAR IN “1” RANGE (FIRST GEAR IN “D” RANGE OKAY)
[TROUBLESHOOTING HINTS]
• Powertrain control system • Control valve body
• Internal or external shift linkages
STEP
INSPECTION ACTION
1
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
t r
0 5 -1 7A ELECTRICAL SYSTEM
COMPONENT [LA4A-EL]
Yes Run OBD test
Perform pinpoint tests “A and D”
tr 0 5 -0 1 A AUTOMATIC TRANSAXLE ON-BOARD
DIAGNOSIS [LA4A-EL]
No
Go to next step
2 Internal or external shift linkage
• Do any of the following problems exist?
• Damaged
• Misadjusted
• Misassembled
t r
0 5 -1 8 SELECTOR LEVER
REMOVAL/INSTALLATION
Yes Service as required
After servicing linkage, verify that the TR switch is properly
adjusted
tr 0 5 -1 7A ELECTRICAL SYSTEM COMPONENT
[LA4A-EL]
No Go to next step
3 Control valve body
• Do any of the following problems exist?
• Bolts are not torqued to specification
• Gaskets are damaged
• Shift solenoid No.2 (SS2) is stuck “ON”
• Hydraulic passages are damaged
• Separator plates are damaged, or blocked
Yes Service as required
No The problem is not in the automatic transaxle
Go to engine symptom troubleshooting
tr 0 1 -0 1 A ENGINE SYMPTOM TROUBLESHOOTING
[FS]
0 5 -0 1 A -4 9