TM 5-3895-385-23-1
0077
Table 1. SPN#1347, FMI#4 ― Electronic Fuel Control Actuator Shorted Low -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. Electronic fuel control actuator
1. Turn keyless engine switch to
diagnostic supply voltage
the AUX position (TM 5-3895-
incorrect.
385-10), but do not start
engine.
2. Measure voltage between
1. If voltage is more than 3.0 VDC,
electronic fuel control actuator
turn keyless engine switch to
SIGNAL pin (pin 2) between
OFF position (TM 5-3895-385-
ECM and ground (WP 0443,
10), and proceed to next
Vol 3 and WP 0448, Vol 3,
malfunction.
Figure 36).
2. If voltage is less than 3.0 VDC,
turn keyless engine switch to
OFF position (TM 5-3895-385-
10), and replace engine ECM
(WP 0332, Vol 2).
8. Engine harness pin short circuit to
Measure resistance and check for
1. If resistance is greater than 100
ground.
a short circuit between engine
kΩ, turn keyless engine switch
ECM wiring harness W25 C1 fuel
to OFF position (TM 5-3895-
pump actuator SIGNAL pin (pin 2)
385-10), and proceed to next
and ground (WP 0443, Vol 3 and
malfunction.
WP 0448, Vol 3, Figure 43).
2. If resistance is less than 100 kΩ,
turn keyless engine switch to
OFF position (TM 5-3895-385-
10), and replace engine ECM
wiring harness (WP 0334, Vol
2).
9. Pin-to-pin short circuit in engine
1. Disconnect engine ECM wiring
ECM wiring harness.
harness W25 C1 from ECM
(WP 0451, Vol 3, Figure 45).
2. Measure resistance between
1. If resistance is greater than 100
engine ECM wiring harness
kΩ, turn keyless engine switch
W25 C1 fuel pump actuator
to OFF position (TM 5-3895-
SIGNAL pin (pin 2) and all
385-10), and replace engine
other pins in engine ECM
ECM (WP 0332, Vol 2).
wiring harness connector W25
C1 (WP 0443, Vol 3 and WP
0448, Vol 3, Figure 37).
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