Test J: Poor Vehicle Tracking During Anti-Lock Function

Pinpoint Test J: 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.

Voltage is supplied by circuit 532 (OG/YE) (hot at all times), circuit 533 (TN/RD) (hot at all times) and circuit 1087 (OG) (hot at all times). Ground is provided through circuit 1203 (BK/LB) and circuit 57 (BK).

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

J1:

J2-J5: