Mode B: (Negative pressure introduced)
WARNING: This page is about a different variant/trim than selected.
Introduce negative pressure in the intake manifold to the tank.
Approx. 0 → -2 kPa (0 → -15 mmHg, 0 → -0.6 inHg)
When the pressure above (desired negative pressure) is reached, enters Mode C.
When the tank internal pressure does not reach the target negative pressure, the diagnosis is cancelled.