Dtc P0741 / P0742: Torque Converter Clutch Circuit Performance Or Stuck Off / Stuck - Suzuki 2006 SX4 Service Manual

5A-46 Automatic Transmission/Transaxle:
DTC Troubleshooting
Step
1 Was "A/T System Check" performed?
2 Check output shaft speed sensor circuit
1) Disconnect TCM connectors with ignition switch turned
OFF.
2) Check for proper connection to output shaft speed
sensor at "C07-5" and "C07-14" terminals.
3) If OK, check resistance of sensor circuit.
Resistance of input shaft speed sensor circuit
Between terminals "C07-5" and "C07-14" of
disconnected harness side TCM connector: 344 –
516 Ω at 20 °C (68 °F)
Between terminal "C07-5" / "C07-14" of
disconnected harness side TCM connector and
ground: No continuity
Are they in good condition?
3 Check output shaft speed sensor
1) Check output shaft speed sensor for resistance referring
to "Output Shaft Speed Sensor Inspection".
Is it in good condition?
4 Check visually output shaft speed sensor and sensor
rotor using mirror for the following
• No damage
• No foreign material attached
• Correct installation
Are they in good condition?
DTC P0741 / P0742: Torque Converter Clutch Circuit Performance or Stuck OFF / Stuck ON
DTC Detecting Condition and Trouble Area
DTC detecting condition
DTC P0741:
Difference between engine speed and input shaft speed is larger
than specification while TCC solenoid valve is turned ON.
(2 driving cycle detection logic)
DTC P0742:
Difference between engine speed and input shaft speed is smaller
than specification while TCC solenoid valve is turned OFF.
(2 driving cycle detection logic)
Action
I2RH01510023-01
Yes
Go to Step 2.
Go to Step 4.
"BLK" or "WHT" wire
open or short.
Intermittent trouble or
faulty TCM.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
If OK, substitute a
known-good TCM and
recheck.
Trouble area
• Mechanical malfunction of TCC solenoid valve.
• Malfunction of valve body assembly.
• Fluid passage clogged or leaking.
• Torque converter clutch malfunction.
No
Go to "A/T System
Check".
Go to Step 3.
Replace output shaft
speed sensor.
Clean, repair or replace.
S6RW0C5104025