TM 5-3895-385-23-1
FIELD MAINTENANCE
BITUMINOUS MATERIAL PAVING MACHINE (BMPM)
SPN#612, FMI#2 ― SIGNALS REVERSED ON ENGINE SPEED AND CAMSHAFT POSITION SENSORS
INITIAL SETUP:
Personnel Required
References -- Continued
91L
WP 0334, Vol 2
References
WP 0357, Vol 2
WP 0277, Vol 2
WP 0451, Vol 3
WP 0332, Vol 2
Equipment Conditions
WP 0333, Vol 2
Engine off (TM 5-3895-385-10)
Engine hood assembly removed (WP 0433, Vol 2)
TROUBLESHOOTING PROCEDURES
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. Some malfunctions in certain sensors, or in the engine
ECM, may cause false errors to display because of this shared wiring. For this malfunction
(SPN#612, FMI#2), the harness wiring is shared by the intake manifold pressure/temperature
sensor, the camshaft position sensor, the water-in-fuel sensor, and the fuel pressure sensor.
Table 1. SPN#612, FMI#2 ― Signals Reversed On Engine Speed and Camshaft Position Sensors.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Engine speed sensor and/or
1. Ensure W25 C12 is connected
1. If properly connected, proceed to
camshaft position sensor
properly to engine speed sensor
next test.
connectors not properly
(WP 0334, Vol 2).
installed.
2. If not connected properly,
connect W25 C12 to engine
speed sensor (WP 0334, Vol 2).
2. Ensure W25 C11 is connected
1. If properly connected, proceed to
properly to camshaft position
next malfunction.
sensor (WP 0334, Vol 2).
2. If not connected properly,
connect W25 C11 to camshaft
position sensor (WP 0334, Vol
2).
