DTC P2757 [AW6A-EL, AW6AX-EL]

id0502j7805100

DTC P2757

Torque converter clutch (TCC) stuck off

DETECTION CONDITION

•  When all conditions below are satisfied.

―  ATF temperature 20 °C {68 °F} or more

―  Driving in 4GR—6GR at D range

―  Engine running

―  Torque converter clutch (TCC) operating

―  Difference between engine speed and counter drive gear (output) revolution speed (VSS) 100 rpm or more

Diagnostic support note:

•  This is a continuous monitor (CCM).

•  The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.

•  A PENDING CODE is not available.

•  FREEZE FRAME DATA is available.

•  The AT warning light illuminates.

•  The DTC is stored in the TCM memory.

POSSIBLE CAUSE

•  ATF level low

•  Deteriorated ATF

•  TCC control solenoid stuck

•  Line pressure low

•  Control valve stuck.

•  Torque converter malfunction

•  TCM malfunction

DTC P2757	Torque converter clutch (TCC) stuck off
DETECTION CONDITION	• When all conditions below are satisfied. ― ATF temperature 20 °C {68 °F} or more ― Driving in 4GR—6GR at D range ― Engine running ― Torque converter clutch (TCC) operating ― Difference between engine speed and counter drive gear (output) revolution speed (VSS) 100 rpm or more Diagnostic support note: • This is a continuous monitor (CCM). • The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle. • A PENDING CODE is not available. • FREEZE FRAME DATA is available. • The AT warning light illuminates. • The DTC is stored in the TCM memory.
POSSIBLE CAUSE	• ATF level low • Deteriorated ATF • TCC control solenoid stuck • Line pressure low • Control valve stuck. • Torque converter malfunction • TCM 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 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.
2		No	Go to the next step.
3	INSPECT ATF CONDITION • Turn the ignition switch to the LOCK position. • Inspect the ATF condition. ― Clear red: Normal ― Light red (pink): 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.
3		No	If the ATF color is milky or reddish brown, replace ATF, then go to Step 7. (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.
4		No	Add ATF to the specified level, then go to Step 7. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION [AW6A-EL, AW6AX-EL].)
5	INSPECT LINE PRESSURE • Start the engine. • Measure the line pressures. (See MECHANICAL SYSTEM TEST [AW6A-EL, AW6AX-EL].) • Are the line pressures within the specifications?	Yes	Go to the next step.
5		No	All ranges: Replace the oil pump, then go to Step 7. Any ranges: Replace the control valve body, then go to Step 6. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [AW6A-EL, AW6AX-EL].)
6	INSPECT TCC CONTROL SOLENOID • Inspect the TCC control solenoid. (See SOLENOID VALVE INSPECTION [AW6A-EL, AW6AX-EL].) • Is it normal?	Yes	Replace the Torque converter, then go to the next step. (See TORQUE CONVERTER REMOVAL/INSTALLATION [AW6A-EL, AW6AX-EL].)
6		No	Replace the control valve body, then go to the next step. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [AW6A-EL, AW6AX-EL].)
7	VERIFY TROUBLESHOOTING OF DTC P2757 COMPLETED • Make sure to reconnect all the disconnected connectors. • Clear the DTC from the memory using the M-MDS. • Start the engine. • Warm up engine and ATX. • Drive the vehicle under the following conditions for 2 s or more. ― ATF temperature (TFT PID): 20 °C {68 °F} or more ― Drive in the D range, 4GR—6GR (TCC operation) • Are any DTCs present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [AW6A-EL, AW6AX-EL].)
7		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE • Perform the “After Repair Procedure”. (See AFTER REPAIR PROCEDURE [AW6A-EL, AW6AX-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [AW6A-EL, AW6AX-EL].)
8		No	DTC troubleshooting completed.