P0743

P0743. TORQUE CONVERTER CLUTCH SOLENOID MALFUNCTION
CHECK THE TORQUE CONVERTER CLUTCH SOLENOID GROUND CIRCUIT.
1. Disconnect the transmission electrical connector, JB155.
2. Measure the resistance between JB155, pin 18 (B) and GROUND.
^ Is the resistance greater than 5 ohms?
-> Yes
-> No

CHECK THE TORQUE CONVERTER CLUTCH SOLENOID RESISTANCE.
1. Measure the resistance between JB155, pin 17 and pin 18 at the transmission.
^ Is the resistance 12.6 ohms?
-> Yes
-> No
INSTALL a new TCC solenoid. CLEAR the DTC. TEST the system for normal operation.

CHECK THE TORQUE CONVERTER CLUTCH SOLENOID GROUND WIRE FOR CONTINUITY.
1. Disconnect the TOM electrical connector, JB131.
2. Measure the resistance between JB155, pin 18 (B) and JB131, pin 17 (B).
^ Is the resistance greater than 5 ohms?
-> Yes
REPAIR the high resistance circuit.
-> No
Contact dealer technical support for advice on possible module failure.

CHECK THE TORQUE CONVERTER CLUTCH SOLENOID SIGNAL WIRE FOR CONTINUITY.
1. Measure the resistance between JB155, pin 17 (O) and JB131, pin 16 (O).
^ Is the resistance greater than 5 ohms?
-> Yes
REPAIR the high resistance circuit.
-> No
Contact dealer technical support for advice on possible module failure.