DTC P1783:00 [AY6A-EL, AY6AX-EL]


id0502k1820700

DTC P1783:00

ATF high oil temperature malfunction

DETECTION CONDITION
•  Conditions: Engine speed < 800 rpm and TCM communication normal
•  Circumstances: ATF temperature of 150 °C {302 °F} or above detected
•  Time period: Determined after 1 time lasting 12 seconds
Diagnostic support note:
•  The MIL does not illuminate.
•  The AT warning light does not illuminate.
•  PENDING CODE is not available.
•  FREEZE FRAME DATA is not available.
•  The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION
•  Request torque limitation
POSSIBLE CAUSE
•  High engine load drive (Driving a steep gradient at a low speed)
•  Insufficient or excess level of ATF
•  Deteriorated ATF
•  TCM malfunction
SYSTEM WIRING DIAGRAM

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 vehicle driving conditions when a DTC P1783:00 is output according to the customer reports.
•  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 FOR ATF LEAKAGE
•  Verify that there is no ATF leaking from the transaxle case, and the connecting surfaces of the transaxle and the engine.
•  Is any ATF leakage verified?
Yes
After repairing the spot where there is ATF leakage, adjust the ATF level, then go to Step 5.
No
Go to the next step.
4
INSPECT ATF CONDITION
•  Inspect the ATF condition.
•  Is it normal?
Yes
Go to the next step.
No
Replace the ATF, then go to next step.
5
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Clear the DTC using the M-MDS.
•  Switch the ignition OFF (LOCK), then switch it ON.
•  Verify the DTCs recorded in the TCM.
•  Is the same DTC present?
Yes
Replace the TCM, then go to the next step.
No
Go to the next step.
6
VERIFY NO DTCs ARE PRESENT
•  Perform the “Reading DTCs Procedure”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.