TM 5-3895-385-23-1
FIELD MAINTENANCE
BITUMINOUS MATERIAL PAVING MACHINE (BMPM)
SPN#723, FMI#7 ― ENGINE SPEED SENSORS MISALIGNMENT
INITIAL SETUP:
Personnel Required
References ― Continued
91L
WP 0334, Vol 2
References
WP 0357, Vol 2
WP 0277, Vol 2
Equipment Conditions
WP 0323, Vol 2
Engine off (TM 5-3895-385-10)
WP 0324, Vol 2
Engine hood assembly removed (WP 0433, Vol 2)
WP 0333, Vol 2
TROUBLESHOOTING PROCEDURE
NOTE
Some sensors share harness wiring. Malfunctions in certain sensors or in the engine Electronic
Control Module (ECM) may cause false errors to display because of this shared wiring. For this
malfunction (SPN#723, FMI#7), harness wiring is shared by the camshaft position sensor, the rail
fuel pressure sensor, the intake manifold pressure/temperature sensor, and the water-in-fuel
sensor.
Table 1. SPN#723, FMI#7 ― Engine Speed Sensors Misalignment.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Crankshaft speed/position
1. Disconnect engine ECM harness
sensor damaged.
W25 C12 from crankshaft
speed/position sensor (WP 0451,
Vol 3, Figure 46).
2. Inspect crankshaft speed/position
1. If damaged, replace crankshaft
sensor W25 C12 for damage.
speed/position sensor (WP
0333, Vol 2).
2. If not damaged, proceed to
next malfunction.
2. Camshaft position sensor
1. Disconnect engine ECM harness
damaged.
from camshaft position sensor
W25 C11 (WP 0451, Vol 3,
Figure 46).
2. Inspect camshaft position sensor
1. If damaged, replace camshaft
for damage.
position sensor (WP 0333, Vol
2).
