Suzuki Wagon R RB310, Supplementary Service Manual

Page: 106 / 254

AUTOMATIC TRANSMISSION (4 A/T) 7B-33
DTC P0741 TCC (lock-up) solenoid performance or stuck OFF
Step Action Yes No
1 Was “AUTOMATIC TRANSMISSION DIAG-
NOSTIC FLOW TABLE” performed? Go to Step 2. Go to “AUTOMATIC
TRANSMISSION DIAG-
NOSTIC FLOW TABLE”.
2 Check TCC (lock-up) solenoid referring to
“SHIFT SOLENOID VALVES” in this section.
Is it in good condition? Go to Step 3. Replace TCC (lock-up)
solenoid.
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? Go to Step 4. Faulty valve body.
4 Substitute a known-good torque converter and
recheck.
Is it OK? Torque converter malfunc-
tion. Overhaul and repair auto-
matic transmission.
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.