DTC P1783[GF4AX-EL]

id0502a2807700

DTC P1783

ATF overheating

DETECTION CONDITION

•  ATF temperature is 138 °C {280 °F} or more

Diagnostic support note:

•  This is a continuous monitor (CCM).

•  The MIL does not illuminate if the PCM detects the above malfunction conditions during the first drive cycle.

•  A PENDING CODE is not available.

•  FREEZE FRAME DATA not available.

•  The O/D OFF indicator light illuminates.

•  The DTC is stored in the PCM 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

•  Oil cooler malfunction

•  PCM malfunction.

DTC P1783	ATF overheating
DETECTION CONDITION	• ATF temperature is 138 °C {280 °F} or more Diagnostic support note: • This is a continuous monitor (CCM). • The MIL does not illuminate if the PCM detects the above malfunction conditions during the first drive cycle. • A PENDING CODE is not available. • FREEZE FRAME DATA not available. • The O/D OFF indicator light illuminates. • The DTC is stored in the PCM 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 • Oil cooler malfunction • PCM 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.
1		No	Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	VERIFY VEHICLE DRIVING CONDITIONS • Verify each PID monitor of the HTM_CNT and HTM_DIS. • Verify vehicle driving conditions when a DTC P1783 is output. • Has the vehicle been driven at a high engine load?	Yes	• Go to Step 5. • Inform the customer that the automatic transaxle temperature is high due to high engine load driving.
3		No	Go to the next step.
4	VERIFY DTCS • Turn the ignition switch to the LOCK position, then to the ON position. • Verify the DTCs in the PCM memory. • Are except DTC P1783 output?	Yes	Go to the applicable DTC inspection. (See DTC TABLE[GF4AX-EL].)
4		No	Go to SYMPTOM TROUBLESHOOTING, “NO.23 TRANSAXLE OVERHEATS”, then go to the next step. (See NO.23 TRANSAXLE OVERHEATS[GF4AX-EL].)
5	VERIFY TROUBLESHOOTING OF DTC P1783 COMPLETED • Make sure to reconnect all the disconnected connectors. • Clear the DTC from the memory using the M-MDS. • Warm up the engine. • Drive the vehicle in D range and make sure that gears shift smoothly from 1GR to 4GR. • Are any DTCs present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION[L3].)
5		No	Go to the next step.
6	VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE[GF4AX-EL].) • Is there any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE[GF4AX-EL].)
6		No	DTC troubleshooting completed.