Cessna T188C - Page 341

MODEL
188
&
T188
SERIES
SERVICE
MANUAL
16-54.
TROUBLE
SHOOTING.
TROUBLE
PROBABLE
CAUSE
REMEDY
LANDING
AND
TAXI
LIGHTS
Short
circuit
in
wiring.
1. Inspect
circuit
breaker.
If
OUT.
circuit
breaker
is
open,
proceed
to
step
2.
If circuit
breaker
is
OK. proceed
to step
3.
Defective
wiring.
2.
Test
each
circuit
separately
until
short
is
located.
Repair
or
replace
wiring.
Defective
switch.
3.
Check
voltage
at lights
with
master
and
landing
and
taxi
light
switches
ON.
Should
read
bat-
tery
voltage.
Replace
switch.
LANDING
OR
TAXI
LIGHT
Lamp
burned
out.
1.
Test
lamp
with
ohmmeter
or
OUT.
new lamp.
Replace
lamp.
Open
circuit
in wiring.
2.
Test
wiring
for
continuity.
Repair
or
replace
wiring.
ALL
NAV
LIGHTS
OUT.
Short
circuit
in wiring.
1.
Inspect
circuit
breaker.
If
circuit
breaker
is
open,
proceed
to
step
2.
If circuit
breaker
is
OK,
proceed
to
step 3.
Defective
wiring.
2.
Isolate
and
test
each
nav
light
circuit
until
short
is located.
Repair
or replace
wiring.
Defective
switch.
3.
Check
voltage
at
nav light
with
master
and
nav light
switches
on.
Should
read
battery
voltage
Re-
place switch.
ONE
NAV
LIGHT
OUT.
Lamp
burned
out.
1.
Inspect
lamp.
Replace
lamp.
Open
circuit
in wiring.
2.
Test
wiring
for
continuity.
Repair
or replace
wiring.
WARNING
The
anti-collision
system
is
a high voltage
device.
Do not
remove
or
touch tube
assembly
while in
operation.
Wait
at least 5
minutes
after
turning
off power
before
starting
work.
BOTH
ANTI-COLLISION
Open circuit
breaker.
1. Check,
Lf open
reset.
if
STROBE
LIGHTS
WILL
circuit breaker
continues
to
NOT LIGHT.
open proceed
to step
2.
16-37