As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU BOTTLE DISCHARGE LIGHT IS ILLUMINATED. ACCOMPLISHED TROUBLESHOOTING ON ONE OF THE THREE LARGE CONNECTORS AFT LEFT SIDE OF GEAR TO CHECK FOR ANY SHORTING OF PIN 2-3; RECHECKED VOLTAGE AT SQUIB ON APU BOTTLE. THE PROGNOSIS IS ON A BAD CONNECTOR WITH A BAD PIN-SOCKET. REPLACED CONNECTOR AND CHECKED VOLTAGE AT THE CONNECTOR.