Toyota 30CL1300.cuw Firmware for 2014 Tundra
Learn how Toyota 30CL1300.cuw relates to a 2014 Tundra engine control update for diagnostic trouble code P2610.
30CL1300.cuw is an engine control calibration associated with a 2014 Toyota Tundra update for diagnostic trouble code P2610. Toyota identifies calibration 30CL1300 as the updated calibration in service bulletin T-SB-0146-16, which addresses a malfunction indicator light.
What the calibration controls
The engine control module manages engine operation and monitors its own diagnostic functions. P2610 concerns the module’s internal engine-off timer performance. That timer helps the controller determine how long the engine has been shut down, information used in onboard diagnostic monitoring.
In practical terms, the bulletin describes an updated calibration for a condition in which the malfunction indicator light, commonly called the check-engine light, is associated with P2610. The calibration update is relevant to that documented diagnostic condition. The available record does not establish a change in power, fuel economy or other driving characteristics.
Catalog and service context
The filename 30CL1300.cuw corresponds to the calibration identifier 30CL1300 in Toyota’s service record. The bulletin lists the 2014 Tundra as its vehicle scope, but the identifier alone should not be treated as proof that the calibration applies to every Tundra configuration.
No modified variant or feature-specific label is identified for this file. Its documented distinction is its role as the updated calibration in the P2610 service bulletin.