As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB - CREW CALLED DISPATCH WITH AN AVIONICS FAN FLOW INDICATION POSSIBLE OVERHEAT. RETURNED TO HNL. LANDED WITHOUT INCIDENT. DEFERRED MANIFOLD FAIL DET LOOP. FOUND D1-117 2.9 MEGA OHMS RO GND AND C5-13420 M OHMS TO GND. REPLACED D1-117 PER MM 36-23-07. REMOVED AND REPLACED C5-134 SWPM. TESTS GOOD.