Join Now
International Automotive Technicians Network

P0743 Diagnostic Trouble Code Discussion for March 2006

Torque Converter Clutch Solenoid Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0743
Help Request Posted
2000 Jeep Wrangler Sport 4.0L CEL on VIN: 1J4FA49S0Y
P0743: Transmission Relay Circuit Malfunction. Code resets instantly. I've checked power to the solenoid, through it to the ecm. I can fire the solenoid by grounding the wire at the ecm (pin 11 white connector), amp probe/oscilloscope shows solenoid "kick" (ie, pintel movement)and only around 1 amp...
March 07, 2006
2000 Jeep Wrangler Sport 4.0L CEL on VIN: 1J4FA49S0Y
P0743: Transmission Relay Circuit Malfunction. Code resets instantly. I've checked power to the solenoid, through it to the ecm. I can fire the solenoid by grounding the wire at the ecm (pin 11 white connector), amp probe/oscilloscope shows solenoid "kick" (ie, pintel movement)and only around 1 amp...
March 07, 2006