TM 5-3895-385-23-1
0032
NOTE
Some ECM wiring harness Supply and Return signal lines are shared by more than one ECM
sensor. Problems affecting ECM sensors that share lines can result in display of several
malfunctions (SPN and FMI codes) at the same time. ECM module problems that affect shared
lines can also produce several malfunction codes. For this malfunction (SPN# 110, FMI#16), the
ECM harness Supply and Return lines are shared by the coolant temperature sensor, the oil
pressure switch, and the barometric pressure sensor.
Table 1. SPN#110, FMI#16 ― Engine Coolant Temperature Above Engine Protection Warning Limit.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Engine coolant temperature
1. Install fuse box (WP 0277, Vol
above normal operational
2).
range.
2. Connect battery cables (WP
0357, Vol 2).
3. Turn keyless engine switch to
the AUX position (TM 5-3895-
385-10), but do not start engine.
Wait 30 seconds.
4. Check active engine faults
1. If fault code SPN#110, FMI#16
screen for fault code SPN#110,
is displayed, proceed to next
FMI#16.
malfunction.
2. If fault code SPN#110, FMI#16
is not displayed, proceed to
next test.
5. Check inactive engine faults
1. If fault code SPN#110, FMI#16
screen for fault code SPN#110,
is displayed with multiple
FMI#16.
counts, turn keyless engine
switch to the OFF position (TM
5-3895-385-10), and proceed
to next malfunction.
2. If code SPN#110, FMI#16,
code is not displayed, turn
keyless engine switch to the
OFF position (TM 5-3895-385-
10). No fault present; restore
equipment to original condition.
2. Coolant level is below
1. Inspect for coolant leaks in and
1. If coolant leak is discovered at
specification.
around the cooling system,
coolant hoses, replace coolant
engine block, and radiator (WP
hoses (WP 0365, Vol 2).
0364, Vol 2).
2. If coolant leak is discovered at
radiator, replace radiator (WP
0364, Vol 2).
