Test A

PINPOINT TEST A: NO COMMUNICATION WITH THE ABS MODULE

Tests A1 - A2:

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 20-CF6A (PK/YE) (ignition feed) and circuit 30-CF13 (RD) (power hot at all times). Ground is provided through circuit 31-CF6A (BK/YE) and 31-CF6B (BK/YE).

Possible Causes
^ charging system
^ battery
^ ground circuit 31-CF6A (BK/YE) or 31-CF6B (BK/YE)
^ power supply:
^ circuit 30-CF13 (RD)
^ circuit 20-CF6A (PK/YE)