Toyota 30C58000.cuw Transmission Control Calibration
Learn how Toyota 30C58000.cuw relates to automatic transmission control and P2714 service bulletins for the 2007 Tundra.
30C58000.cuw is a Toyota powertrain control calibration associated with automatic transmission operation. Toyota service bulletins list calibration ID 30C58000 as a previous version in connection with diagnostic trouble code P2714 and an illuminated malfunction indicator light on the 2007 Tundra.
What the calibration controls
The powertrain control module manages transmission operation alongside engine functions. It commands transmission components that regulate hydraulic pressure and gear changes. P2714 concerns the performance of pressure control solenoid D, a component involved in controlling transmission hydraulic pressure. A fault in this system can affect shift quality and may prompt the vehicle to illuminate the malfunction indicator light.
The calibration identifier identifies a software version used by the controller. It does not, by itself, establish that a particular vehicle has a faulty solenoid or needs a particular repair. Diagnosis of P2714 depends on the vehicle’s symptoms and test results as well as its stored calibration ID.
Service bulletin context
Toyota service bulletins TC017-07 and T-TCI-2943 associate 30C58000 with a previous calibration for the 2007 Tundra in the context of P2714 and the malfunction indicator light. The updated calibration discussed in those bulletins is the revision intended to address the documented condition. The records do not describe 30C58000 itself as the improvement.
T-SB-0231-10 also lists 30C58000 as a previous calibration in a bulletin covering the 2007 Tundra and 2008 Sequoia. That multi-vehicle scope is not proof that this exact calibration applies to every vehicle named in the bulletin. The filename 30C58000.cuw carries no stock or modified variant label.