Mazda 626 Station Wagon, Workshop Manual

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ON-BOARD DIAGNOSTIC
STEP INSPECTION ACTION
10 VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure”.
(See K2-61 AFTER REPAIR PROCEDURE.)
• Is there any DTC present?
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
DTC P0741
DTC P0741
Torque converter clutch (TCC) stuck OFF
DETECTION
CONDITION
• When all conditions below satisfied.
— ATF temperature 20 ° C {68 " F} or above.
— Driving in 4GR at D range.
— Engine speed
450 rpm or above.
— Turbine speed within 225— 4,988 rpm.
— Vehicle speed within 60 — 100 km/h {37 — 62 mph}.
— TCC operation
— Shift solenoid A duty value
99 % or above
— Power or normal mode
— Difference between engine speed and turbine speed above 100 rpm
— Any of DTC P0500, P0705, P0706, P0710, P0715, P0751, P0752, P0753, P0756, P0757, P0758,
P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, or P0773 not output.
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
Diagnostic procedure
STEP INSPECTION ACTION
1 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Information
availability.
• Is any related Service Information available?
Yes Perform repair or diagnosis according to available repair
information.
• If vehicle is not repaired, go to next step.
No Go to next step.
2 CHECK ATF CONDITION
• Turn ignition key to OFF.
• Check ATF condition.
— Clear red: Normal
— Milky: Water mixed in fluid
— Reddish brown: Deteriorated ATF
• Is it okay?
(See K2-28 AUTOMATIC TRANSAXLE FLUID
(ATF) INSPECTION, Automatic Transaxle Fluid
(ATF) Condition Inspection.)
Yes
Go to next step.
No If ATF color milky or reddish brown, replace ATF, then go
to Step 4.
(See K2-29 AUTOMATIC TRANSAXLE FLUID (ATF)
REPLACEMENT.)
3 CHECK ATF LEVEL
• Start engine.
• Warm up ATX.
• Is ATF level within specification?
(See K2-28 AUTOMATIC TRANSAXLE FLUID
(ATF) INSPECTION, Automatic Transaxle Fluid
(ATF) Level Inspection.)
Yes Go to next step.
No Adjust ATF level, then go to Step 6.
(See K2-28 AUTOMATIC TRANSAXLE FLUID (ATF)
INSPECTION, Automatic Transaxle Fluid (ATF) Level
Inspection.)
K 2-90