Mazda 6 2002, Руководство по ремонту

Страница: 489 / 1248

K–78
ON-BOARD DIAGNOSTIC
End Of Sie
DTC P0742
A6E567001030W18
5 CHECK OPERATION OF EACH VALVE AND
EACH SPRING
•
Turn ignition key to OFF.
•
Remove control valve body.
•
Disassemble control valve body.
•
Is each valve operation okay and is return
spring okay?
(See K–34 CONTROL VALVE BODY REMOVAL ,
K–35 CONTROL VALVE BODY INSTALLATION .)
(See ATX Workshop Manual FN4A-EL (9999-95-
FN4A-99).)
Yes Replace ATX, then go to next step
(See ATX Workshop Manual FN4A-EL (9999-95-FN4A-
99).)
No Repair or replace shift valve and return spring, then go to
next step.
(See
K–34 CONTROL VALVE BODY REMOVAL , K–35
CONTROL VALVE BODY INSTALLATION .)
(See ATX Workshop Manual FN4A-EL (9999-95-FN4A-
99).)
6 VERIFY TROUBLESHOOTING OF DTC P0741
COMPLETED
•
Make sure to reconnect all disconnected
connectors.
•
Clear DTC from memory using WDS or
equivalent.
•
Start engine.
•
Warm up engine and ATX.
•
Drive vehicle under following conditions for 5
seconds or more .
— ATF temperature: 20
°
C {68
°
F} or above
— Drive in D range, 4th gear (TCC operation)
— Vehicle speed (VSS PID):
within 60—100
km/h {37—62 mph}
•
Are any DTCs present?
Yes Replace PCM, then go to next step.
(See F–43 PCM REMOVAL/INSTALLATION .)
No Go to next step.
7 VERIFY AFTER REPAIR PROCEDURE
•
Perform “After Repair Procedure”.
(See K–52 AFTER REPAIR PROCEDURE .)
•
Are any DTCs present?
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
STEP INSPECTION ACTION
DTC P0742 Torque converter clutch (TCC) stuck ON
DETECTION
CONDITION
•
All of following conditions satisfied under each of following throttle conditions.
— ATF temperature
20
°
C {68
°
F} or above .
— Driving in 4GR at D range.
— Engine run.
— Turbine speed
within 225—4,988 rpm .
— Vehicle speed below 70 km/h {43 mph} .
— Torque converter clutch (TCC) no operation
— Difference between engine speed and turbine speed
below 50 rpm
— DTC P0734 not output
•
Throttle conditions.
— Throttle opening angle (TP PID)
above 10.1% and 5 seconds or more have passed.
— Throttle opening angle (TP PID) within 3.1—10.1% and 3 seconds or more have passed.
— Throttle opening angle at closed throttle position and 5 seconds or more have passed.
Diagnostic support note:
•
This is a continuous monitor (CCM).
•
MIL does not illuminate if PCM detects the above malfunction conditions during first drive cycle.
•
PENDING CODE is not available.
•
FREEZE FRAME DATA is not available.
•
HOLD indicator light flashes.
•
DTC is stored in the PCM memory.
POSSIBLE
CAUSE
•
ATF level low
•
Deteriorated ATF
•
Shift solenoids A, B, C, D, E, and pressure control solenoid stuck
•
Line pressure low
•
2-4 brake band slipping
•
3-4 clutch slipping
•
Control valve stuck
•
PCM malfunction