DTC P0741

Precautions: Precautions for Diagnosing Trouble · Precautions for Disassembly and Reassembly · Precautions for Transmission / Transaxle · General safety (00)

DTC Detecting Condition and Trouble Area

DTC detecting condition	Trouble area
P0741: Torque Converter Clutch Circuit Performance / Stuck Off Difference between engine speed and input shaft speed is more than 100 rpm even if TCC solenoid valve is turned on. (2 D/C detection logic)	•TCC solenoid valve •Torque converter •Valve body assembly •TCM

DTC Confirmation Procedure

WARNING:

If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

•Select a level road with no traffic to minimize the risk of accident.
•Perform the test extremely carefully.
•Perform the road test using 2 persons, a driver and a tester.

NOTE:

•Check that the following condition is met in this “DTC Confirmation Procedure”.

—DTC P0742, P2762, P2763, P2764, U0073 or U0100 is not detected.

•Troubleshoot first unexpected DTCs previously detected in “DTC Confirmation Procedure”.

1)Warm up engine to normal operating temperature.

2)Drive vehicle at approx. 50 to 80 km/h (31 to 50 mile/h) in D range for 1 minute. (Keep accelerator pedal position constant in this step.)

DTC Troubleshooting

Step	Action	Yes	No
1	Was “A/T Control System Check” performed?	Go to Step 2.	Go to A/T Control System Check.
2	Scan tool parameter check 1)Warm up engine to normal operating temperature. 2)Drive vehicle at approx. 100 km/h (62 mile/h). 3)Check “Engine Speed” and “Input Shaft Revolution” using “Data list” mode on SUZUKI scan tool while depressing accelerator pedal and accelerating vehicle in D range. 4)Check that difference between “Engine Speed” and “Input Shaft Revolution” is more than 100 rpm for 3 sec. or less. Is check result OK?	Go to Step 3.	Go to Step 4.
3	ATF check 1)Check ATF for level and deterioration. Is check result OK?	Substitute a known-good TCM and recheck DTC.	Refill or change ATF.
4	TCC solenoid valve check 1)Remove valve body assembly. 2)Check TCC solenoid valve for proper operation. Is check result OK?	Go to Step 5.	Replace valve body assembly.
5	Valve body check 1)Check that each fluid passage is not clogged in valve body assembly. Is check result OK?	Go to Step 6.	Clean or replace valve body assembly.
6	Torque converter check 1)Replace torque converter. 2)Clear DTC. 3)Set ignition “OFF”. 4)Perform “DTC Confirmation Procedure”, and check DTC. Is DTC P0741 still detected?	Substitute a known-good TCM and recheck DTC.	End.