Test A: No Communication With The ABS 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-CF6B (RD), circuit 30-CF13 (RD) (power hot at all times) and circuit 20-CF6A (PK/YE) (hot in RUN). Ground is provided through circuit 31-CF6C (BK/YE) and 31-CF6D (BK).
Possible Causes
^ Charging system
^ Battery
^ Ground circuit 31-CF6C (BK/YE) or 31-CF6D (BK)
^ Power supply:
- circuit 30-CF13 (RD) open
- circuit 30-CF6B (RD) open
- circuit 20-CF6A (PK/YE) open
- fuse
A1-A2:
A2:
