Yep, that's another one I have encountered.
If the ECM does not receive a brake light signal for an arbitrary period of time, that constitutes a defective condition.
If you find the Stop lamp fuse blown, check for chafed or burned wires in the areas near the base of the rear FOPS pillars (even if the truck does not actually have lights on the rear.
IF it DOES have the Komatsu OEM rear lights, check the light assemblies for damage that may have cut or crushed some wiring.
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