Each modulator valve contains two air control solenoids, which act as pilots to the hold and release diaphragms. Depending on the particular ABS configuration, a system may utilize three, four or six modulator valves. ™ ™ Gen 4 & Gen 5 ABS - Basic Cab Mount H H C rman XXS e G 0X O 30by B de in y C rman XXS e G 0X O 30by B de in De sig ne 0 d an d M 6 an ufa ct ure uf M d 6 4 03 d ig 2 86 10 Des 48 ne 0 an M an 48 6 y a d M re tu ac a d 4 6 03 2 86 10 3 31 8O 79 3 31 EO 8O FO 79 M EO FO M ™ Gen 5 ABS – Standard Cab Mount ™ Gen 4 ABS – Standard Cab Mount Sliding Lock ECU Cover Blank Connector ECU Connector (1 of 4) ™ Gen 5 ABS (PLC - Basic Frame MouĪBS Valves The ABS modulator valve controls air pressure to individual brake assemblies. Further service information is available on ECUs are available in 4 and 6-channel versions with either J1922 or J1939 data links. Gen 5™ ABS units incorporate power line carrier (PLC) hardware. A modulator valve is located near each brake chamber or pair of brake chambers that make up an ABS controlled wheel site.Įlectronic Control Units (ECUs) Identification Frame mount ECUs are environmentally packaged versions of the related Gen 4™ & Gen 5™ ABS cab-mounted units (Standard, Basic). It houses the hold and release solenoids. Pressure Modulator Valve (PMV): This component regulates brake chamber air pressure. It also diagnoses ABS malfunctions and stores specific diagnostic trouble codes.
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