Toyota Motor Corporation has to deal with another problem with a few diesel motors used by its production vehicles.

Toyota Industries Corporation (TICO) was put under scrutiny for irregularities regarding domestic emissions certifications of engines for forklifts and construction machinery. In that process, they also discovered three TICO-developed diesel engines used in several models—the 1GD, the 2GD, and the F33A—also having certification irregularities surrounding horsepower output testing.

These three engines have been used in the Land Cruiser 300/Lexus LX500d, the Land Cruiser Prado, the Hiace (Granace/Mazda Bongo Brawny Van), the Hino Dyna/Dutro, the Hilux, the Fortuner, and the Innova. It’s a problem that extends outside of Japan, basically.

The problem? During certification testing, the horsepower output of engines was measured with ECUs with different software (versus production models) to make the values appear smoother with less variation.

To rectify this, Toyota temporarily suspended shipments of vehicles equipped with affected engines, and the automaker says that there is no need for consumers to stop using vehicles with the aforementioned motors.

This problem isn’t even that serious compared to the potentially life-threatening compromises that Daihatsu made.

Considering what Toyota has gone through with Daihatsu, the company is pulling out all stops to ensure that there aren’t any more skeletons in its subsidiaries’ closets, alongside restructuring of the relevant business that needs a “change in the mindset” of all employees and a reform of corporate culture.