Suzuki WagonR+ RB310, Service Manual

Page: 1030 / 3086

AUTOMATIC TRANSAXLE (M13 ENGINE MODEL) 7B1-65
DTC P0741/P0742 TCC Circuit Performance or Stuck OFF/TCC Circuit Stuck
ON
DTC Detecting Condition and Trouble Area
[DTC P0741]
[DTC P0742]
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch OFF, if available.
2) Clear DTC in TCM memory.
3) Start engine and warm it up to normal operating temperature.
4) Shift select lever to
“ N ” and “ D ” range for each 10 seconds.
5) Drive vehicle with 4th in “ D ” range and lock-up ON for 20 seconds or longer referring to “ Automatic Gear
Shift Diagram ” in this section.
6) Turn O/D OFF switch ON keeping on driving in “ D ” range. (Confirm “ O/D OFF ” lamp lights.)
7) Drive vehicle with 2nd or 3rd gear in “ D ” range, 15 – 20% throttle opening and at vehicle speed of 25 – 40
km/h (16 – 25 mile/h).
8) Stop vehicle and turn ignition switch OFF.
9) Repeat Step 3) to 7) one time.
10) Stop vehicle and check DTC.
DTC Troubleshooting
DTC DETECTING CONDITION TROUBLE AREA
When driving vehicle with 3rd or 4th gear in “ D ” range, dif-
ference in revolution between engine and A/T input (input
shaft speed) is lager than specification although TCM
commanded TCC solenoid to turn ON.
• Mechanical malfunction of TCC solenoid valve.
• Malfunction of valve body assembly.
• Fluid passage clogged or leaking.
• Torque converter clutch malfunction.
DTC DETECTING CONDITION TROUBLE AREA
When driving vehicle with 2nd, 3rd or 4th gear in “ D ”
range, difference in revolution between engine and A/T
input (input shaft speed) is smaller than specification
although TCM commanded TCC solenoid to turn OFF.
• Mechanical malfunction of TCC solenoid valve.
• Malfunction of valve body assembly.
• Fluid passage clogged or leaking.
• Torque converter clutch malfunction.
WARNING:
• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 persons, a driver and tester, on a level road.
Step Action Yes No
1 Was “ Automatic Transaxle Diagnostic Flow
Table ” performed?
Go to Step 2. Go to “ Automatic Tran-
saxle Diagnostic Flow
Table
” in this section.
2 Check TCC solenoid valve for operation refer-
ring to
“ Shift Solenoid Valves, TCC solenoid
valve and Timing solenoid valve Inspection ” in
this section.
Are they in good condition?
Clean fluid passage or
replace valve body
assembly. Replace TCC solenoid
valve.