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/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).
Possible Causes
^ charging system
^ battery
^ ground circuit 31 CF6A (BK YE) or 31 CF6B (BK)
^ power supply:
- circuit 30-CF13 (RD) open
- circuit 30-CF6A (RD/YE) open
Test A1-A2:
Test A2:
PINPOINT TEST A: NO COMMUNICATION WITH THE 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.