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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 46 (Transmission - Design And Function (644 Body)) >> System Function (Aw50-42; 2000) >> Components activated in selected gears

Components activated in selected gears

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.
Fig 1: Identifying Selected Gear System Function Chart
GLL122083Courtesy of VOLVO CARS OF NORTH AMERICA.

Clutches: 

  1. C1- Engages the input shaft with the rear planetary train (P1) ring gear.
  2. C2 - Engages the input shaft with the sun gear shaft for the primary shaft planetary trains (P1, P2).
  3. C3 - Engages the planetary gear carrier with the sun gear for the secondary shaft planetary gear (P3).

Brakes: 

  1. B1 - Locks the sun gear shaft for the primary shaft planetary trains (P1, P2) so that it cannot rotate in any direction.
  2. B2 - Locks, using F1, the sun gear shaft for the primary shaft planetary trains (P1, P2) so that it cannot rotate counter-clockwise.
  3. B3 - Locks the front planetary train (P2) ring gear so that it cannot rotate in any direction.
  4. B4 - Locks the sun gear for the secondary shaft planetary train (P3) so that it cannot rotate in any direction.

Freewheel: 

  1. F1 - Prevents the sun gear shaft for the primary shaft planetary trains (P1, P2) from rotating counter-clockwise when B2 is engaged.
  2. F2 - Prevents the front planetary train (P2) ring gear from rotating counter-clockwise.
  3. F3 - Prevents the sun gear for the secondary shaft planetary train (P3) from rotating clockwise.

Gear shift solenoids: 

  1. S1 - Controls shifting in the transmission. Activated in 2nd and 3rd gears.
  2. S2 - Controls shifting in the transmission. Activated in back-up (reverse) gear, 1st and 2nd gears.
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