Therefore, you won't find a single wire you can simply connect or disconnect to control lockup. Instead, the lockup solenoid within the transmission is activated by the TCM through a specific circuit within the transmission's wiring harness. Accessing and modifying this requires understanding the transmission's electrical system and potentially using a scan tool to monitor and control the lockup function.
To modify or diagnose the torque converter lockup, you'd need to:
* Consult a wiring diagram: A detailed wiring diagram specific to your vehicle's year and model is crucial. This will show you the circuits involved in the lockup control system, including the solenoid and its connection to the TCM.
* Use a scan tool: A scan tool capable of communicating with the TCM will allow you to monitor the lockup status, check for diagnostic trouble codes (DTCs), and potentially force the lockup on or off for diagnostic purposes (proceed with caution when forcing functions).
Attempting to directly manipulate the wiring without a thorough understanding of the system could damage the transmission or other components. It's best to seek assistance from a qualified transmission specialist or mechanic if you are experiencing problems with your torque converter lockup.
