New Yorker V6-181 2972cc 3.0L SOHC VIN 3 FI (1989)
ABS Control Module: Description and Operation
Pressure Monitoring Module Operation
Pump operation is controlled by the pressure monitoring module. It does this by grounding the pump relay coil in response to accumulator pressure. The
pressure monitoring module contains two pressure switches. If these switches do not indicate the same pressure, or if low accumulator pressure is
detected, the sensor block will turn on the BRAKE warning lamp and the ANTI-LOCK warning lamp, thus disabling anti-lock function.
WARNING: The accumulator must be discharged any time service is performed on the sensor block. A hydraulic port from the accumulator to
the pressure monitoring module is located behind the sensor block
