DTC P0741[GF4AX-EL]

id0502a2807900

DTC P0741

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 at D range

―  Engine speed 500 rpm or more

―  Turbine speed within 150—4,987 rpm

―  Vehicle speed within 65—104 km/h {41—64 mph}

―  Torque converter clutch (TCC) operating

―  Difference between engine speed and turbine speed more than 100 rpm

Diagnostic support note:

•  This is a continuous monitor (CCM).

•  The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.

•  The PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.

•  FREEZE FRAME DATA is available.

•  The O/D OFF indicator light illuminates.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  ATF level low

•  Deteriorated ATF

•  TCC control solenoid valve and pressure control solenoid stuck

•  TCC (in torque converter) slipping

•  Line pressure low

•  TCC shift valve stuck

•  Converter relief valve stuck

•  Pressure regulator valve stuck

•  Pressure modifier valve stuck

•  Solenoid reducing valve stuck

•  Control valve stuck

•  Oil pump malfunction

•  PCM malfunction

DTC P0741	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 at D range ― Engine speed 500 rpm or more ― Turbine speed within 150—4,987 rpm ― Vehicle speed within 65—104 km/h {41—64 mph} ― Torque converter clutch (TCC) operating ― Difference between engine speed and turbine speed more than 100 rpm Diagnostic support note: • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. • The PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA is available. • The O/D OFF indicator light illuminates. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• ATF level low • Deteriorated ATF • TCC control solenoid valve and pressure control solenoid stuck • TCC (in torque converter) slipping • Line pressure low • TCC shift valve stuck • Converter relief valve stuck • Pressure regulator valve stuck • Pressure modifier valve stuck • Solenoid reducing valve stuck • Control valve stuck • Oil pump 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	INSPECT ATF CONDITION • Turn the ignition switch to the LOCK position. • Inspect the ATF condition. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[GF4AX-EL].) ― Clear red: Normal ― Milky: Water mixed in fluid ― Reddish brown: Deteriorated ATF • Is it normal?	Yes	Go to the next step.
3		No	If the ATF color is milky or reddish brown, replace ATF, then go to Step 9. (See AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT[GF4AX-EL].)
4	INSPECT ATF LEVEL • Start the engine. • Warm up the transaxle. • Is the ATF level within the specification? (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[GF4AX-EL].)	Yes	Go to the next step.
4		No	Add ATF to the specified level, then go to Step 9. (See AUTOMATIC TRANSAXLE FLUID (ATF) INSPECTION[GF4AX-EL].)
5	INSPECTION TCC CONTROL SOLENOID VALVE FOR CLICK SOUND • Perform operation inspection. (See SOLENOID VALVE INSPECTION[GF4AX-EL].) • Verify the click sound of TCC control solenoid valve when applying B+ to each transaxle terminal. • Was a click heard from solenoids?	Yes	Go to the next step.
5		No	Replace the solenoid that you could not hear a click sound, then go to Step 9. (See SOLENOID VALVE REMOVAL/INSTALLATION[GF4AX-EL].)
6	INSPECT LINE PRESSURE • Start the engine. • Measure the line pressures. (See MECHANICAL SYSTEM TEST[GF4AX-EL].) • Are the line pressures within the specifications?	Yes	Go to the next step.
6		No	• All ranges: Replace the oil pump or control valve body, then go to Step 9. (See CONTROL VALVE BODY REMOVAL/INSTALLATION[GF4AX-EL].) (See ATX Workshop Manual GF4AX-EL) • Any ranges: Replace or overhaul the automatic transaxle, then go to Step 9. (See AUTOMATIC TRANSAXLE AND TRANSFER REMOVAL/INSTALLATION[GF4AX-EL].) (See ATX Workshop Manual GF4AX-EL)
7	INSPECT DIFFERENCE BETWEEN ENGINE SPEED AND TURBINE SPEED • Turn the ignition switch to the LOCK position. • Connect the M-MDS. • Start the engine. • Drive the vehicle under the following conditions. ― Drive in the D range, 4GR (TCC operation) • Inspect difference between the engine speed and turbine speed during TCC operation in 4GR. • Is there a difference between the engine speed (RPM PID) and turbine speed (TSS PID) normal? Difference 99 or less	Yes	Go to the next step.
7		No	Replace or overhaul the control valve body, then go to Step 9. (See CONTROL VALVE BODY REMOVAL/INSTALLATION[GF4AX-EL].)
8	INSPECT OPERATION OF EACH VALVE AND EACH SPRING • Turn the ignition switch to the LOCK position. • Remove the control valve body. • Disassemble the control valve body. • Is each valve operation normal and is the return spring normal? (See CONTROL VALVE BODY REMOVAL/INSTALLATION[GF4AX-EL].) (See ATX Workshop Manual GF4AX-EL.)	Yes	Replace the torque converter, then go to the next step (See AUTOMATIC TRANSAXLE AND TRANSFER REMOVAL/INSTALLATION[GF4AX-EL].) (See ATX Workshop Manual GF4AX-EL.)
8		No	Repair or replace the shift valve and return spring, then go to the next step. (See CONTROL VALVE BODY REMOVAL/INSTALLATION[GF4AX-EL].) (See ATX Workshop Manual GF4AX-EL.)
9	VERIFY TROUBLESHOOTING OF DTC P0741 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 transaxle. • Drive the vehicle under the following conditions for 15.2 s or more. ― ATF temperature: 20 °C {68 °F} or more ― Drive in the D range, 4GR (TCC operation) ― Vehicle speed (VSS PID): within 65—104 km/h {41—64 mph} • Are any DTCs present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION[L3].)
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE • Perform the “After Repair Procedure”. (See AFTER REPAIR PROCEDURE[GF4AX-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE[GF4AX-EL].)
10		No	DTC troubleshooting completed.