The PCM/TCM controls the locking and unlocking of the Torque Converter Clutch ( or Torque Converter Clutch ), to the input shaft of the transmission, by appling hydraulic pressure. The main purpose of T/C clutch control is to save fuel by decreasing the hydraulic load inside the T/C. The PCM/TCM outputs current to control the Torque Converter Clutch Control Solenoid Valve( TCCSV ) and hydraulic pressure is applied to the TCC according to the TCC current value. When the amount of current is high, high pressure is applied and the Torque Converter Clutch is locked. The normal operating range of the Torque Converter Clutch Control current value is from 200mA(unlocked) to 1000mA(locked).
TCM set this code If measured feedback current below 0.92mA .
Item
Detecting Condition
Possible Cause
DTC Strategy
Open/short
Wiring harness(SLU) short or open
Shift control solenoi valve SLU
TCM
Enable Conditions
10.2V < Battery voltage < 14V
Not error in system
CAN communication : normal
Threshold Value
Feedback current < 0.92mA
Diagnostic Time
More than 0.5 second.
Fail Safe
No self learning control.
No Lock-up/Lock-up slip control.
Inhibited 2nd gear starting with Sports mode.
Measuring Position
Resistance (20?)
Signal - Ground
5.0 ~ 5.6 ?
Fig 1) D Range-1st gear
Fig 2) D Range-2nd gear
Fig 3) Sports mode -1st gear
Fig 4) Sports mode -2nd gear
Fig 5) Sports mode -3rd gear
Fig 6) Sports mode -4th gear
Fig 7) Sports mode -5th gear
Fig 8) Sports mode -6th gear
Fig 9) Reverse