TM 5-3895-385-23-1
0076
Table 1. SPN#1347, FMI#3 ― High Voltage or Open Circuit At Fuel Pump Actuator -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. ECM connector pins or engine
1. Disconnect engine ECM wiring
harness damaged.
harness connector W25 C1
from engine ECM (WP 0451,
Vol 3, Figure 45).
2. Inspect engine ECM wiring
1. If damaged, replace engine
harness connector W25 C1 and
ECM wiring harness (WP 0334,
connector pins for damage.
Vol 2).
2. If no damage is found, proceed
to next test.
3. Inspect engine ECM connector
1. If damaged, replace engine
and connector pins for damage.
ECM (WP 0332, Vol 2).
2. If no damage is found, proceed
to next malfunction.
6. ECM fuel pump actuator
1. Turn keyless engine switch to
diagnostic signal voltage error.
the AUX position (TM 5-3895-
385-10), but do not start
engine.
2. Measure voltage from fuel
1. If voltage is more than 3 VDC,
pump actuator SIGNAL pin (pin
turn keyless engine switch to
02) to fuel pump actuator
OFF position (TM 5-3895-385-
RETURN pin (pin 32) at ECM
10), and proceed to next
(WP 0443, Vol 3 and WP 0448,
malfunction.
Vol 3, Figure 33).
2. If voltage is less than 3 VDC,
turn keyless engine switch to
OFF position (TM 5-3895-385-
10), and replace ECM (WP
0332, Vol 2).
7. Open circuit in engine ECM
Measure resistance between fuel
1. If resistance is more than 10 Ω,
wiring harness.
pump actuator SIGNAL pin (pin 2)
replace engine ECM wiring
at ECM of engine ECM wiring
harness (WP 0334, Vol 2).
harness W25 C1 and fuel pump
actuator SIGNAL pin (pin 1) at fuel
pump actuator connector of engine
ECM wiring harness W25 C9 (WP
0443, Vol 3 and WP 0448, Vol 3,
Figure 34).
2. If resistance is less than 10 Ω,
proceed to next malfunction.
0076-3