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

id0502k1820700

DTC P1783:00 | ATF high oil temperature malfunction
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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
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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. (See AUTOMATIC TRANSAXLE FLUID (ATF) LEVEL ADJUSTMENT [AY6A-EL, AY6AX-EL].)
No | Go to the next step.
4 | INSPECT ATF CONDITION • Inspect the ATF condition. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION [AY6A-EL, AY6AX-EL].) • Is it normal? | Yes | Go to the next step.
No | Replace the ATF, then go to next step. (See AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT [AY6A-EL, AY6AX-EL].)
5 | VERIFY DTC TROUBLESHOOTING COMPLETED • Clear the DTC using the M-MDS. • Switch the ignition OFF, then switch it ON. • Verify the DTCs recorded in the TCM. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [AY6A-EL, AY6AX-EL].) • Is the same DTC present? | Yes | Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [AY6A-EL, AY6AX-EL].)
No | Go to the next step.
6 | VERIFY NO DTCs ARE PRESENT • Perform the “Reading DTCs Procedure”. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [AY6A-EL, AY6AX-EL].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [AY6A-EL, AY6AX-EL].)
No | DTC troubleshooting completed.