GILLIG LOW FLOOR, Руководство по обслуживанию

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Brakes & Wheels
Electronic Control Unit (ECU)
The ECU is the brain of the system. It receives information from the sensors and sends signals to the
ABS modulator valves.
ABS Modulator Valve
The ABS modulator valve controls air pressure to each affected brake during ABS operation. Dur -
ing normal operation, compressed air flows unrestricted through the ABS valve to the brake chamber.
During ABS operation, the ABS valve adjusts air pressure to the brake chamber to control braking and
prevent wheel lock.
ABS Warning Lamp
The ABS warning lamp is located on the light bar and lights when the ignition switch is activated. The
lamp turns off when the vehicle speed reaches approximately 4 mph. If the warning lamp remains lit, or
comes on at any other time during vehicle operation, it signals a malfunction of the ABS.
Diagnostics
To troubleshoot a possible ABS fault, use the blink code diagnostics built into the system. This is accom -
plished by turning on the ABS blink code switch, located in the rear enclosure inside the coach (behind
a panel at the top of the rear bulkhead; refer to the “Electrical Panels” section of this manual for exact
location). The blink code LED in the rear enclosure (LED #23 on the D2 #73 multiplexer module) and
the ABS lamp on the light bar, will flash a series of coded flashes that indicate fault locations. Refer to
the Electrical Chapter and the Meritor ABS service manual, provided with the coach, for blink code
operation details.