DTC P0743: Notes
DTC P0743 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0743 |
Torque converter clutch (TCC) solenoid valve circuit malfunction (open circuit/short circuit) |
| DETECTION CONDITION |
- Open circuit or short circuit in TCC solenoid signal system (while TCM monitors solenoid output voltage, the voltage that differs from the ON/OFF signal output by CPU in TCM is detected).
Diagnostic support note:
- This is continuous monitor (CCM).
- MIL illuminates if TCM detects the above malfunction condition during first drive cycle.
- PENDING CODE is not available.
- FREEZE FRAME DATA is available.
- O/D OFF indicator light flashes.
- DTC is stored in TCM memory.
|
| POSSIBLE CAUSE |
- Open circuit between TCC solenoid valve terminal A and TCM terminal 2S
- Short to ground between TCC solenoid valve terminal A and TCM terminal 2S
- Short to power between TCC solenoid valve terminal A and TCM terminal 2S
- TCC solenoid valve malfunction
- Damage connector between TCC solenoid valve and TCM
- TCM malfunction
|
 Courtesy of MAZDA MOTORS CORP.
|