Mazda 626 Station Wagon, Руководство по ремонту, Страница: 12 / 577

HOW TO USE THIS MANUAL
Using the symptom troubleshooting
• Symptom troubleshooting shows diagnostic procedures, inspection methods, and proper action to take for
each trouble symptom.
DESCRIPTION
describes what
kind of TROUBLE
SYMPTOM
TROUBLESYMPTOM
POSSIBLE
CAUSE
describes
possible
point of
malfunction
STEP shows the
order of
troubleshooting.
Reference
item(s)for
additional
information to
perform
INSPECTION.
INSPECTION
describes the
method to
quickly
determine the
failed part.
DESCRIPTION
POSSIBLE
CAUSE
Engine fla re s up o r s lip s w he n u p s h lftln g o r d ow n shifting
• When accelerator pedal is depressed for driveway, engine speed increase but vehicle speed increase
slowly.
»When accelerator is depressed while driving, engine speed increases but vehicle not.__________________
• There is clutch slip because clutch is stuck or line pressure is low.
— Clutch stuck, slippage (forward clutch, 3-4 clutch, 2-4 brake band, one-way clutch 1, one-way clutch 2)
• Line pressure low
• Malfunction or mis-adjustment of TP sensor
• Malfunction of VSS
» Malfunction of input/turbine speed sensor
• Malfunction of sensor ground
• Malfunction of shift solenoid A, 8 or C
• Malfunction of TCC solenoid valve
• Malfunction of body ground
• Malfunction of throttle cable
• Malfunction of throttle valve body
— Poor operating of mechanical pressure
• Selector lever position disparity
• TR switch position disparity
Note
« Before following troubleshooting steps, make sure that Automatic Transaxle On-board Diagnostic and
Automatic Transaxle Basic Inspection are conducted.
'"'STEP
INSPECTION ACTION
ACTION
• Is fine pressure okay? Yes Go to next step.
_ _ describes the
No Repair or replace any defective parts according to -— -
inspection results.
appropriate
action to take
2 • Is shift point okay? Yes Go to next step. as a result
— See K-5 Road Test Preparation No Go to symptom troubleshooting No.9 “Abnormal shift”. (Yes/No) of
3 * Stop engine and turn ignition switch on.
* Connect NGS tester to DLC-2.
■ Simulate SHIFT A, SHIFT B and SHIFT C PIDs
for ON.
* Is operating sound of shift solenoids heard?
Yes • Overhaul control valve body and repair or replace any
defective parts.
See ATX Workshop Manual GF4A-EL 0 6 6 6 - 1 A - 9 9 F ) ^
* If problem remains, replace or overhaul transaxle and
repair or replace defective parts.
INSPECTION.
Howto perform
ACTION is
described in the
relative material
shown.
No • Inspect for bend, damage, corrosion or loose
connection if shift solenoid A, B, or C terminal on ATX.
• Inspect for shift solenoid mechanical stuck.
See K-14 Inspection of Operation--,___
• If shift solenoids are okay, inspectfoPupeo^or short
circuit between PCM connector terminal A, B or CT*"“- ' -
— Reference
4 • Verify test results.
— If okay, return to diagnostic index to service any additional symptoms.
— If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or
diagnosis.
— If vehicle is repaired, troubleshooting completed.
— If vehicle is not repaired o r additional diagnostic information is not available, replace or reprogram PCM.
ltem(s) to
perform
ACTION.
G I-7