P0743
DTC P0743 - TORQUE CONVERTER CLUTCH CIRCUIT ELECTRICAL1. OUTLINE OF DIAGNOSIS
Judge NG when the lock-up duty solenoid becomes battery short, ground short or open circuit.
2. COMPONENT DESCRIPTION
Lock-up duty solenoid is installed to the transmission hydraulic control valve body. The duty ratio is controlled by the signal from TCM. This allows the lock-up clutch to be connected or released smoothly by controlling the lock-up control valve.
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
5. DIAGNOSTIC METHOD
6. DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed
8. FAIL SAFE
None
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)