General Information

P0743 Torque Converter Clutch Circuit Electrical

General Information

Component Location





General Description

PCM/TCM control Damper clutch performance by supplied oil pressure.
Damper clutch is for fuel reduction by decreasing oil pressure component's resistance in T/C.

DTC Description

This code is set when circuit open or short detected by PCM/TCM.

DTC Detecting Condition





Specification

- Working temperature : -40 °C ~ 150 °C
- Internal resistance : 5.1 ± 0.3 Ohms (25 °C normal temperature)

Diagnostic Circuit Diagram










Signal Waveform & Data
















Fig 1) "D" range 3rd gear
Fig 2) "D" range 4th gear
Fig 3) "D" range 5th gear
Fig 4) "D" range 6th gear
* Working above 3rd speed, but it may be working or not by driving variation at 3rd speed.