Piper Navajo PA-31 Service Manual page 633

PIPER NAVAJO SERVICE MANUAL
TABLE IX-II. TROUBLESHOOTING CHART (FUEL SYSTEM) (cont.)
Trouble
Cause
Remedy
FUEL WARNING SYSTEM (cont.)
Test switch fails to
illuminate all warning
lights.
No power from bus.
Check and reset the
gear, oil temperature,
and fuel quantity
indicator circuit
breaker.
Trace through system
for an open circuit
or faulty component.
Test switch
malfunction.
Check connections and
replace if necessary.
All the warning
lights fail to
extinguish.
Test switch
grounded.
Correct or replace
if necessary.
Reissued: 10/12/79
FUEL SYSTEM
3C17