Subaru 2009 IMPREZA Service Manual page 2375

ABS
(1) All wheel speed
(2) Ignition key
(3) ABS warning light
(4) Stop light switch
(5) Valve relay
(6) FL decompression valve
(7) FL compression valve
(8) FR decompression valve
(9) FR compression valve
(10) RR decompression valve
NOTE:
The control operation starts at point A.
B: SPECIFICATION
1. CONDITIONS FOR COMPLETION OF
ABS SEQUENCE CONTROL
When the following conditions develop, the ABS
sequence control stops and ABS operation is re-
turned to the normal control mode.
1) When the speed of at least one wheel reaches
10 km/h (6 MPH).
2) When the brake pedal is released during ABS
sequence control and the stop light switch is be-
comes OFF.
3) After completion of ABS sequence control.
4) When a malfunction is detected.
ABS Sequence Control
(11) RR compression valve
(12) RL decompression valve
(13) RL compression valve
(14) Pump motor
(15) 1.5 seconds
(16) Light OFF
(17) Light ON
(18) 1.0 second
(19) 1.4 seconds
ABS-12
(20) 0.6 seconds
(21) 0.4 seconds
(22) Point A
(23) Reset
(24) Master cylinder pressure
(25) FL wheel cylinder pressure
(26) FR wheel cylinder pressure
(27) RR wheel cylinder pressure
(28) RL wheel cylinder pressure