NORMAL BRAKING HYDRAULIC CIRCUIT AND
SOLENOID VALVE FUNCTION
The hydraulic diagram (Fig. 4) shows the vehicle in
the normal braking mode of the base brake hydraulic
system. The diagram shows no wheel spin or slip
occurring relative to the speed of the vehicle. The
driver is applying the brake pedal which builds pres-
sure in the brake hydraulic system to engage the
brakes and stop the vehicle.
Fig. 4 Normal Braking Hydraulic Circuit
1 - OUTLET VALVE 6 - TO RIGHT FRONT WHEEL
2 - PUMP PISTON 7 - NORMALLY OPEN VALVE (OFF)
3 - PUMP MOTOR (OFF) 8 - MASTER CYLINDER PRESSURE
4 - LOW PRESSURE ACCUMULATOR 9 - FROM MASTER CYLINDER
5 - NORMALLY CLOSED VALVE (OFF) 10 - NOISE DAMPER CHAMBER
5 - 54 BRAKES - ABS ZB
HCU (HYDRAULIC CONTROL UNIT) (Continued)
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