Chart A15 - Low Fluid/Pressure Loop Input Not Processable: Notes
WARNING: This page is about a different car, the 1988 Buick Riviera and 1988 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.
EBCM has a normally closed loop from pin No. 9 (reservoir warning input) to pin No. 10 (pressure warning input). This circuit runs through 2 normally closed switches. This circuit is pushed up to 12 volts at pin No. 9, and EBCM monitors voltage at pin No. 10. If voltage at pin No. 10 drops below expected values, the controller enters the inhibit mode partially disabling anti-lock function.