What was found
EN ROUTE, THE FLIGHT CREW REPORTED A PROBLEM WITH THE EMERGENCY/ PARKING BRAKE ACCUMULATOR PRESSURE INDICATION. THIS IS A REPEAT OF SAME PROBLEM EXPERIENCED EARLIER IN THE DAY. REPLACEMENT OF THE PRESSURE SWITCH DID NOT CORRECT THE PREVIOUS DISCREPANCY. THE FLIGHT CREW WAS INSTRUCTED TO DIVERT TO COS WHERE COMPANY PERSONNEL WAS AVAILABLE TO INSPECT THE AIRCRAFT. COS MX REPLACED THE EMERGENCY BRAKE VALVE IAW AMM 32-43-02. OPERATIONAL CHECK WAS SATISFACTORY.