What was found
ON SHORT FINAL, THE LT ENGINE FIRE DETECTION LIGHT ILLUMINATED. ABOUT 5 SECONDS LATER THE LT ENGINE FIRE WARNING LIGHT ILLUMINATED FOR ABOUT 2 SECONDS & EXTINGUISHED ON ITS OWN. NO CBS WERE TRIPPED. REMOVED THE UPPER,LOWER & SIDE SKIRT COWLINGS FROM LT ENGINE. POWERED UP AIRCRAFT & VERIFIED AMBER FIRE DET SYS L WAS NOT ILLUMINATED. GAINED ACCESS TO THE FIRE DETECTION CABLE. ROUTED A NEW FIRE SENSOR CABLE. PERFORMED A FIRE DETECTION SYSTEM FUNCTIONAL CHECK. FUNCTIONAL CHECKED GOOD IAW SPM 20-30-20, WDM 26-10-01, AMM 26-11-02, 126-11-00, 80-10-00, AND 71-11-00.