Toyota 30C57000.cuw Transmission Control Calibration
Explore Toyota calibration 30C57000.cuw, its transmission-control role and its connection to Tundra service bulletins for code P2714.
Toyota 30C57000.cuw is a powertrain control calibration associated with automatic transmission control. It appears as a previous calibration in service records for the 2007 Toyota Tundra, including bulletins concerning an illuminated malfunction indicator light and diagnostic trouble code P2714.
What the calibration controls
The powertrain controller manages automatic transmission operation by processing inputs such as vehicle speed, engine load and driver demand. It uses that information to command shifts and regulate transmission hydraulic pressure through electronically controlled solenoids. These functions influence shift timing and quality as the truck accelerates and changes speed.
P2714 identifies a performance or stuck-off condition involving pressure control solenoid D. In practical terms, the controller has detected a problem associated with the transmission’s pressure-control system. The code and warning light provide a starting point for diagnosis, but they do not by themselves establish that the solenoid or the calibration is the cause.
Service bulletin context
Toyota service bulletins TC017-07 and T-TCI-2943 list 30C57000 as a previous calibration for the 2007 Tundra in connection with the malfunction indicator light and P2714. The calibration revisions discussed in those bulletins address the documented condition. The records do not establish that 30C57000 itself introduced the improvement.
T-SB-0231-10 also lists 30C57000 as a previous calibration. Its stated vehicle scope includes the 2007 Tundra and 2008 Sequoia, but that multi-vehicle scope does not establish that this exact calibration applies to both models.
The identifier is useful when comparing a vehicle’s existing calibration with a service record. It is not, on its own, a complete fitment or diagnostic determination.