DTC P1783:00 [AW6A-EL, AW6AX-EL]SM2445316
DTC P1783:00 [AW6A-EL, AW6AX-EL]

id0502j7820700

DTC P1783:00

ATF high oil temperature malfunction
DETECTION CONDITION
• The TCM detects ATF temperature of 150 °C {302 °F} or more when the TFT sensor circuit malfunction not stored.
Diagnostic support note:
• The MIL does not illuminate.
• The AT warning light does not illuminate.
• The PENDING CODE is not available.
• FREEZE FRAME DATA is not available.
• 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 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 ATF CONDITION
• Switch the ignition to off.
• Inspect the ATF condition.
― Clear red: Normal
― Milky: Water mixed in fluid
― Reddish brown: Deteriorated ATF
• Is it normal? (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION [AW6A-EL, AW6AX-EL].)
Yes
Go to the next step.
No
If the ATF color is milky or reddish brown, replace ATF, then go to Step 5.
(See AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT [AW6A-EL, AW6AX-EL].)
4
INSPECT ATF LEVEL
• Start the engine.
• Warm up the ATX.
• Is the ATF level within the specification? (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION [AW6A-EL, AW6AX-EL].)
Yes
Go to the next step.
No
Add ATF to the specified level, then go to the next step.
(See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION [AW6A-EL, AW6AX-EL].)
5
VERIFY NO DTC HAS BEEN PRESENTED
• Perform the “Reading DTCs Procedure”. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [AW6A-EL, AW6AX-EL].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [AW6A-EL, AW6AX-EL].)
No
DTC troubleshooting completed.