Pressure Warning Switch

NOTE: Some testing on fluid level warning switch is referenced in this procedure. Fluid level warning switch is electrically tied to pressure warning switch.

Ensure ignition is off. Depressurize brake system. See DEPRESSURIZING BRAKE SYSTEM under REMOVAL & INSTALLATION. Using DVOM, check for continuity between terminals No. 9 and 10 of ABS ECU. Continuity should not exist. If continuity exists, replace pressure switch.