P0743

Test 1:

Tests 2 - 6:

Tests 7 - 10:

Tests 11 - 14:

Tests 15 - 18:

SYMPTOM
P0743-TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CIRCUITS

WHEN MONITORED
Continuously with the key ON.

SET CONDITION
This code Will set if the voltage detected on the Torque Converter Clutch Solenoid Control circuit at the PCM is different than the expected voltage.

POSSIBLE CAUSES
- P1765 DTC present
- Intermittent - TCC solenoid control circuit
- Transmission control relay output
- TCC solenoid control circuit open
- TCC solenoid control circuit open internal
- Fused B+ circuit open
- TCC solenoid control circuit short to ground
- TCC Solenoid control circuit short to ground internal
- Transmission relay output circuit short to ground
- TCC solenoid control circuit short to voltage
- TCC solenoid control circuit short to solenoid circuits internal
- TCC solenoid control circuit shorted to other circuits
- TCC solenoid control circuit short to other circuits internal
- Transmission control relay output circuit open
- Transmission control relay - poor contacts
- PCM - TCC solenoid control circuit