Possible Causes
NOTE:
- In particular, check the Modulator Ground stud and earth connections
- Circuit reference - PUMP SUPPLY -
- Circuit reference - PUMP GND -
- Anti-lock brake system hydraulic control unit pump power circuit short circuit to ground, open circuit, high resistance
- Anti-lock brake system hydraulic control unit pump ground circuit open circuit, high resistance
- Anti-lock brake system hydraulic control unit internal failure