C1D12

Apply circuit 2, active with apply circuit 1 idle

C1D11

Parking brake release switch

C1D09

Inclination sensor

C1D08

Secondary parking brake release switch circuit

C1D07

Secondary parking brake apply switch circuit

C1D06

Apply circuit 2, simultaneous active with release circuit 2

C1D05

Apply circuit 2, simultaneous active with release circuit 1

C1D04

Apply circuit 1, simultaneous active with release circuit 2

C1D03

Apply circuit 1, simultaneous active with release circuit 1

C1D02

Release circuit 1 active with release circuit 2 idle