Dtc P0757 - Mazda Mazda6 Workshop Manual Supplement

STEP
4 CHECK ATF CONDITION
• Turn ignition key to OFF.
• Check ATF condition.
— Transparent red: Normal
— Milky: Water mixed in fluid
— Reddish brown: Deteriorated ATF
• Is it okay?
(See K2–78 Automatic Transaxle Fluid (ATF)
Condition Inspection.)
5 VERIFY TROUBLESHOOTING OF DTC P0756
COMPLETED.
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from memory using WDS or
equivalent.
• Start engine.
• Warm up ATX.
• Drive vehicle in D range and make sure that
gears shift smoothly from 1GR to 5GR.
• Is same DTC present?
6 VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
(See K2–124 AFTER REPAIR
• Is there any DTC present?
End Of Sie

DTC P0757

DTC P0757 Shift solenoid B malfunction (stuck on)
• Difference between actual gear ratio and gear ratio set in TCM is large.
Diagnostic support note:
• This is a continuous monitor (CCM).
• MIL illuminates if TCM detects the above malfunction condition.
DETECTION
• PENDING CODE is not available.
CONDITION
• FREEZE FRAME DATA is available.
• AT warning light does not indication.
• DTC is stored in TCM memory.
• Shift solenoid B malfunction.
POSSIBLE
• Shift valve B stuck
CAUSE
• TCM malfunction
Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME PID DATA been
recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Bulletins and/or on-
line repair information availability.
• Is any related repair information available?
3 CHECK FOR DTC
• Turn ignition key to ON (engine OFF).
• Inspect DTC.
• Is DTC outputted?
4 CHECK ATF CONDITION
• Turn ignition key to OFF.
• Check ATF condition.
— Transparent red: Normal
— Milky: Water mixed in fluid
— Reddish brown: Deteriorated ATF
• Is it okay?
(See K2–78 Automatic Transaxle Fluid (ATF)
Condition Inspection.)
K2–154
ON-BOARD DIAGNOSTIC
INSPECTION
PROCEDURE.)
INSPECTION
Yes replace control valve body, then go to next step.
No If ATF color milky or reddish brown, reaper or replace ATX,
then go to next step.
Yes Replace TCM, then go to next step.
(See K2–96 TCM REMOVAL/INSTALLATION.)
No Go to next step.
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
Yes Go to next step.
No Record FREEZE FRAME PID DATA on repair order, then
go to next step.
Yes Perform repair or diagnosis according to available repair
information.
• If vehicle is not repaired, go to next step.
No Go to next step.
Yes Follow applicable DTC inspection procedure.
No Go to next step.
Yes replace control valve body, then go to next step.
No If ATF color milky or reddish brown, reaper or replace ATX,
then go to next step.
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