A: No Communication With the Anti-Lock Brake Control Module
Pinpoint Test A: No Communication With the Anti-lock Brake System (ABS) ModuleNormal 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 30-CF6A (RD) (voltage hot at all times) and circuit 30-CF13 (RD/BU) (voltage hot at all times). Ground is provided through circuit 3 1 -CF6A (BK) and 3 1 -CF6B (BK).
Possible Causes
^ voltage supply circuit 30-CF6A (RD) open
^ voltage supply circuit 30-CF13 (RD/BU) open
^ ground circuit 31-CF6A (BK) open
^ ground circuit 31-CF6B (BK) open
^ charging system
^ battery
Test A1:
Test A1-A2:
CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.