DTC P1783:00 [FS5A-EL]


id050221820700

DTC P1783:00

ATF high oil temperature malfunction

DETECTION CONDITION
•  When all conditions below are satisfied.
―  P0712:00, P0713:00 not output
―  ATF temperature 149.5 °C {301°F} or more
―  ATF oil temperature signal of 0.06 V or more is input to TCM terminal 2H.
Diagnostic support note:
•  This is a continuous monitor (CCM).
•  The MIL does not illuminate.
•  The PENDING CODE is not available.
•  FREEZE FRAME DATA is not available.
•  The AT warning light illuminates if the TCM detects above malfunction conditions during the first drive cycle.
•  The DTC is stored in the TCM memory.
POSSIBLE CAUSE
•  High engine load drive (Driving a steep gradient at a low speed.)
•  Insufficient or excess level of ATF
•  Deteriorated ATF
•  TFT sensor circuit malfunction
•  TCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related Service 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.
2
VERIFY VEHICLE DRIVING CONDITIONS
•  Verify each PID monitor of the HTM_CNT and HTM_DIS.
•  Verify vehicle driving conditions when a DTC P1783:00 is output.
•  Has the vehicle been driven at a high engine load?
Yes
•  Go to Step 5.
•  Inform the customer that the ATX temperature is high due to high engine load driving.
No
Go to the next step.
3
INSPECT ATF CONDITION
•  Switch the ignition to off.
•  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 the next step.
5
VERIFY TROUBLESHOOTING OF DTC P1783:00 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.
•  Is the same DTC present?
Yes
Replace the TCM, then go to the next step.
No
Go to the next step.
6
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “After Repair Procedure”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.