A: No Communication With the Anti-Lock Brake Control Module

Pinpoint Test A: No Communication With the Anti lock Brake System (ABS) Module

Normal Operation
The operating voltage required to supply the ABS module, hydraulic pump, and isolation valves is in a range Between 10 and 17 volts. Voltage is supplied by circuit 601 (LB/PK) (ignition feed) and circuit 493 (BK/PK) (hot at all times). Ground is provided through circuit 274 (BK/WH).

Possible Causes
^ circuit 274 (BK/WH) open
^ circuit 493 (BK/PK) open
^ Circuit 604 (LB/PK) open

Tests A1 - A2:

PINPOINT TEST A: NO COMMUNICATION WITH THE ANTI LOCK BRAKE SYSTEM (ABS) MODULE

CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.