What was found
ON CLIMB OUT BETWEEN 4000 & 15000 FT, MCT THRUST SET & LIGHT TURBULANCE, FIRE DETECT FAIL L AMBER CAS DISPLAYED 5 TIMES. TWO RING TERMINALS ON FIRE DETECT SENSOR AT 6 O'CLOCK POSITION TIGHT WITH NO SIGNS OF WEAR OR MOVEMENT. VISUAL OF THE HARNESS WITH BORESCOPE, NO OBVIOUS DEFECTS. IAW CMM 26-10-01. REMOVED LT ENG FIRE SENSOR WIRING HARNESS IAW MM 26-10-01. VERIFIED 4 EVENTS OF THIS CAS MESSAGE ON ARES VIEW. MEASURED RESISTANCE OF INTERNAL FIRE LOOP PD031 PINS A & C, MEASURED AT 2.987K OHMS. VERIFIED ANOTHER D1 ENG READING THE SAME RESISTANCE VALUE FOR THE INTERNAL FIRE LOOP. CONTINUITY CHK FROM PD023 PINS M & N TO PD031 PINS A & C. CHKD GOOD. DONE IAW FAULT ISOLATION 3, FIGURE 114 72-00-02 & MM 26-00-00.