BITUMINOUS MATERIAL PAVING MACHINE (BMPM)
SPN# 105, FMI #4 ― INTAKE MANIFOLD AIR TEMPERATURE SENSOR VOLTAGE BELOW NORMAL
References -- Continued
WP 0334, Vol 2
WP 0357, Vol 2
WP 0443, Vol 3
WP 0451, Vol 3
WP 0277, Vol 2
WP 0332, Vol 2
Engine off (TM 5-3895-385-10)
WP 0333, Vol 2
Engine hood assembly removed (WP 0433, Vol 2)
All active fault codes must be investigated prior to replacing the engine Electronic Control Module
(ECM). Failure to comply may cause damage to equipment.
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#105, FMI#4), the
ECM harness Supply and Return lines are shared by the intake manifold pressure/temperature
sensor, the camshaft position sensor, the rail fuel pressure sensor, and the water-in-fuel sensor.
Table 1. SPN# 105, FMI#4 -- Intake Manifold Air Temperature Sensor Voltage Below Normal.
TEST OR INSPECTION
1. Intake manifold temperature
1. Disconnect engine ECM wiring
harness connector W25 C7 from
sensor (WP 0451, Vol 3, Figure
2. Inspect manifold
1. If damaged, replace manifold
and connector pins for damage
(WP 0333, Vol 2).
(WP 0451, Vol 3, Figure 45).
2. If not damaged, proceed to