Suzuki WagonR+ RB310 Service Manual page 1444

DTC P0741 TCC (lock-up) solenoid performance or stuck OFF
Step
1 Was "AUTOMATIC TRANSMISSION DIAG-
NOSTIC FLOW TABLE" performed?
2 Check TCC (lock-up) solenoid referring to
"SHIFT SOLENOID VALVES" in this section.
Is it in good condition?
3 Check valve body for fluid passage clog, or
lock-up control valve, secondary regulator valve
or signal valve stuck, referring to "TRANSMIS-
SION UNIT REPAIR OVERHAUL" in this sec-
tion.
Are they in good condition?
4 Substitute a known-good torque converter and
recheck.
Is it OK?
DTC DETECTING CONDITION
• Difference between turbine rev. and engine rev. too close even though TCM ordered to turn OFF lock-up.
• Difference between turbine rev. and engine rev. too wide even though TCM ordered to turn ON lock-up.
Action
AUTOMATIC TRANSMISSION (4 A/T) 7B-33
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Torque converter malfunc-
tion.
No
Go to "AUTOMATIC
TRANSMISSION DIAG-
NOSTIC FLOW TABLE".
Replace TCC (lock-up)
solenoid.
Faulty valve body.
Overhaul and repair auto-
matic transmission.