H: Poor Vehicle Tracking During Antilock Function

Pinpoint Test H: Poor Vehicle Tracking During Antilock

Test H1-H2:

Test H2-H5:

Function

Normal Operation
The operating voltage required to supply the Antilock Brake System (ABS) module, hydraulic pump, and isolation valves is in a range between 10 and 16 volts.

Voltage is supplied by the Smart Junction Box (SJB) through circuit 1844 (LG/RD) (ignition feed) and from the Bussed Electrical Center (BEC) through circuit 534 (YE/LG), and circuit 601 (LB/PK) (voltage at all times). Ground is provided through circuit 1205 (BK).

Possible Causes
^ base brake system
^ Hydraulic Control Unit (HCU)