Mazda 626 Station Wagon, Workshop Manual

Page: 285 / 577

ON-BOARD DIAGNOSTIC
DTC P0711
DTC P0711
Transaxle fluid temperature (TFT) sensor circuit malfunction (stuck)
DETECTION
CONDITION
• When all conditions below satisfied and 150 seconds or more have passed.
— Start engine and 180 seconds or more have passed.
— Vehicle speed 60 km/h {37 mph} or above.
— P0710 not output.
— Variation in ATF voltage
below 0.06 V.
POSSIBLE
CAUSE
• TFT sensor malfunction
• Connector corrosion
• 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 INSPECT TFT SENSOR VOLTAGE
• Turn ignition key to OFF.
• Connect NGS tester to DLC.
• Turn ignition key to ON (engine OFF).
• Access ATFT V PID using NGS tester.
• Record ATF sensor voltage.
• Start engine.
• Drive vehicle at 60 km/h {37 mph} or above
for 330 seconds or more.
• Record ATF sensor voltage again.
• Is variation in voltage 0.06V or above?
Yes Go to Step 4.
No Go to next step.
3 INSPECT POOR CONNECTOR OF ATX
CONNECTOR
• Turn ignition key to OFF.
Inspect ATX connector connection.
• Disconnect ATX connector.
• Check for poor connector (damaged/
pulled-out terminals, corrosion etc.)
• Is connection okay?
Yes Go to next step.
No Repair or replace terminals, then go to next step.
4 VERIFY TROUBLESHOOTING OF DTC P0711
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from memory using NGS tester.
• Access VS and ATFT PID using NGS tester.
• Decrease ATF temperature to
20 ° C
{68
0 F}
or below.
• Drive vehicle under following condition for
330 seconds or more while monitoring PID.
— VS PID: 60 km/h {37 mph}
• Is same DTC present?
Yes Replace PCM, then go to next step.
(See Section F1.)
No Go to next step.
5 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.
K 2-78