Test I: Poor Vehicle Tracking During Anti-Lock Function

Test I: Poor Vehicle Tracking During Anti-lock Function

Refer to Vehicle/Diagrams, Vehicle Dynamic Systems for schematic and connector information.

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 battery voltage is supplied by battery junction box (BJB) fuses 9 (40A) and 12 (20A) along circuit 534 (YE/LG) and circuit 685 (BK/WH). Fused ignition voltage is supplied by smart junction box (SJB) fuse 19 (10A) along circuit 523 (OG/YE). Ground is provided through circuit 1203 (BK/LB) and circuit 1205 (BK).

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

I1-I4:

I4-I5: