Test G: Poor Vehicle Tracking During Anti-Lock Function

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

Normal Operation
The operating voltage required to operate the ABS module, hydraulic pump and isolation valves is in a range between 10 and 16 volts.

Fused ignition voltage is supplied to the ABS module from smart junction box (SJB) fuse 18 (10A) along circuit 1844 (LG/RD). Fused battery voltage is supplied to the ABS module from bussed electrical center (BEC) fuse 65 (30A) along circuit 601 (LB/BK) and BEC fuse 8 (40A) along circuit 534 (YE/LG). Ground is provided to the ABS module along circuit 1205 (BK). There are 2 ground circuits (one for the ABS module and one for the hydraulic pump motor) both share the same circuit number and wire color.

This pinpoint test is intended to diagnose the following:
^ Base brake system
^ Hydraulic control unit (HCU)

G1-G4:

G4 (Continued)-G5: