FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Test H: Poor Vehicle Tracking During Anti-Lock Function

Pinpoint Test H: Poor Vehicle Tracking During Anti-lock Function

Normal Operation
The operating voltage required to supply the anti-lock brake system (ABS) module, hydraulic pump and isolation valves is in a range between 10 and 16 volts.

Fused ignition voltage is supplied by the smart junction box (SJB) through circuit 1844 (LG/RD) and fused battery voltage is supplied by the bussed electrical center (BEC) through circuit 601 (LB/PK) and circuit 534 (YE/LG). Ground is provided through circuit 1205 (BK).

Possible Causes
^ Base brake system
^ Hydraulic control unit (HCU)

H1:




H2-H5: