Position N (Neutral)
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Primary shaft (P1, P2):
The input shaft rotates clockwise. All clutches and brakes are disengaged, and no power is transferred to the planetary trains.
Secondary shaft (P3):
No power is transmitted to the secondary shaft. B4 locks the sun gear so that it cannot rotate in any direction. Shift-lock (P) is disengaged. The planetary gears can rotate freely around the sun gear, and the car can start to roll if parked on an incline.
Brake B4 is activated in both P and N in order to minimize engagement impact. Otherwise this occurs when several brakes and clutches are activated simultaneously, when the gear selector is moved to position D or R. Because B4 is also applied in both 1st gear and reverse, the number of simultaneous engagements is reduced.