DTC P0757[FS5A-EL]


id050221808500

DTC P0757

Shift solenoid B stuck on

DETECTION CONDITION
•  When DTC P0731 and P0733 are not output, and both the following conditions are satisfied.
―  When all conditions below are satisfied while driving in 2GR
•  Engine running
•  ATF temperature 20 °C {68 °F} or more
•  Driving in D or M range
•  Turbine speed within 225—4,987 rpm
•  Secondary gear revolution speed 50 rpm or more
•  Differential gear case (output) revolution speed 35 rpm or more
•  Revolution ratio of forward clutch drum revolution to secondary gear revolution 1.249 or less or 2.157 or more
•  None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773, P0791
―  When all conditions below are satisfied with driving in 4GR
•  Engine running
•  ATF temperature 20 °C {68 °F} or more
•  Driving in D or M range
•  Turbine speed within 225—4,987 rpm
•  Secondary gear revolution speed 50 rpm or more
•  Differential gear case (output) revolution speed 35 rpm or more
•  Vehicle speed 27 km/h {17 mph} or more (LF)
•  Vehicle speed 25 km/h {16 mph} or more (L3)
•  Throttle opening angle at closed throttle position
•  Revolution ratio of forward clutch drum revolution to secondary gear revolution 0.6 or less or 1.249 or more
•  None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773, P0791
Diagnostic support note:
•  This is a continuous monitor (CCM).
•  The MIL illuminates if the TCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the TCM.
•  The PENDING CODE is available if the TCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA is available.
•  The AT warning light illuminates.
•  The DTC is stored in the TCM memory.
POSSIBLE CAUSE
•  ATF level low
•  Deteriorated ATF
•  Shift solenoid B stuck on
•  Control valve stuck
•  TCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related Service Bulletins and/or on-line repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT ATF CONDITION
•  Turn the ignition switch to the LOCK position.
•  Inspect the ATF condition.
―  Clear red: Normal
―  Milky: Water mixed in fluid
―  Reddish brown: Deteriorated ATF
Yes
Go to the next step.
No
If the ATF color is milky or reddish brown, replace ATF, then go to Step 5.
4
INSPECT ATF LEVEL
•  Start the engine.
•  Warm up the ATX.
•  Is the ATF level within the specification?
Yes
Go to the next step.
No
Add ATF to the specified level, then go to Step 7.
5
INSPECT LINE PRESSURE
•  Start the engine.
•  Measure the line pressures.
•  Are the line pressures within the specifications?
Yes
Go to the next step.
No
•  All ranges: Replace the oil pump or control valve body, then go to Step 7.
•  Any ranges: Replace the automatic transaxle, then go to Step 7.
(See ATX Workshop Manual FS5A-EL.)
6
INSPECT OPERATION OF EACH VALVE AND EACH SPRING
•  Turn the ignition switch to the LOCK position.
•  Remove the primary control valve body.
•  Disassemble the primary control valve body.
•  Is each valve operation normal and is the return spring normal?
(See ATX Workshop Manual FS5A-EL.)
Yes
Replace the automatic transaxle, then go to the next step.
(See ATX Workshop Manual FS5A-EL.)
No
Repair or replace the shift valve and return spring, then go to the next step.
(See ATX Workshop Manual FS5A-EL.)
7
VERIFY TROUBLESHOOTING OF DTC P0757 COMPLETED
•  Make sure to reconnect all the disconnected connectors.
•  Clear the DTC from the memory using the M-MDS.
•  Start the engine.
•  Warm up the ATX.
•  Drive the vehicle under the following conditions make sure that gears shift smoothly from 1GR to 4GR.
―  ATF temperature (TFT PID): 20 °C {68 °F} or more
―  Drive in the D range
―  Engine speed (RPM PID): 450 rpm or more
―  Throttle opening angle (THOP PID): 0% (4GR only)
―  Vehicle speed (VSS PID): 27 km/h {17 mph} or more (4GR only) (LF)
―  Vehicle speed (VSS PID): 25 km/h {16 mph} or more (4GR only) (L3)
•  Is the PENDING CODE present?
Yes
Replace the TCM, then go to the next step.
No
Go to the next step.
8
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “After Repair Procedure”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.