TM 5-3895-385-23-1
FIELD MAINTENANCE
BITUMINOUS MATERIAL PAVING MACHINE (BMPM)
SPN#97, FMI#4 ― LOW VOLTAGE AT WATER-IN-FUEL CIRCUIT
INITIAL SETUP:
Test Equipment
References -- Continued
Multimeter (WP 0440, Vol 3, Item 37)
WP 0336, Vol 2
Tools and Special Tools
WP 0357, Vol 2
Wiring harness (WP 0440, Vol 3, Item 67)
WP 0443, Vol 3
Personnel Required
WP 0448, Vol 3
91L
WP 0451, Vol 3
References
WP 0277, Vol 2
Equipment Conditions
Engine off (TM 5-3895-385-10)
WP 0332, Vol 2
Engine hood assembly removed (WP 0433, Vol 2)
WP 0334, Vol 2
TROUBLESHOOTING PROCEDURE
CAUTION
All active fault codes must be investigated prior to replacing the engine Electronic Control Module
(ECM). Failure to comply may cause damage to equipment.
NOTE
Some sensors share harness wiring. Malfunctions in certain sensors or in the engine ECM may
cause false errors to display because of this shared wiring. For this malfunction (SPN#97,
FMI#4), harness wiring is shared by the water-in-fuel sensor, the camshaft position sensor, the
rail fuel pressure sensor, and the intake manifold pressure/temperature sensor.
Table 1. SPN#97, FMI#4 ― Low Voltage at Water-in-Fuel Circuit.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Engine ECM wiring harness or
1. Disconnect water-in-fuel wiring
water-in-fuel sensor connector
harness connector W24 C1
pins damaged.
from water-in-fuel sensor (WP
0448, Vol 3, Figure 45).
2. Inspect the water-in-fuel sensor
1. If damaged, replace fuel filter
and connector pins for damage.
(WP 0336, Vol 2).
2. If no damage is found, proceed
to next test.