Toyota 30CL1301.cuw Firmware for the 2014 Tundra
Learn how Toyota 30CL1301.cuw relates to a 2014 Tundra malfunction indicator light and diagnostic code P2610.
Toyota 30CL1301.cuw is an updated engine control calibration associated with a 2014 Tundra service bulletin for a malfunction indicator light and diagnostic trouble code P2610. The calibration belongs to the engine control system, which manages engine operation and monitors faults that can turn on the warning light.
What the P2610 bulletin addresses
Toyota service bulletin T-SB-0146-16 lists 30CL1301 as an updated calibration. P2610 concerns the engine control module’s internal engine-off timer, which tracks time with the engine shut down. That timing information can be relevant to onboard diagnostic checks after a vehicle has been parked.
In practical terms, the bulletin addresses a warning-light condition associated with that timer diagnostic. The engine control module has a broader job than managing this single check, but the service record does not establish other changes made by this calibration revision.
Understanding the identifier
The complete calibration ID is 30CL1301, while 30CL1301.cuw identifies the corresponding firmware file. The 2014 Toyota Tundra is the vehicle named in the bulletin. The record identifies this calibration as an updated version for the documented issue, not as proof that every 2014 Tundra uses the same file.