TM 5-3895-385-23-1
0034
Table 1. SPN#177, FMI#0 ― Sensed Rail Fuel Pressure Exceeds Rail Relief Valve
Opening Pressure -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Inspect fuel pump actuator and
1. If damaged, replace fuel
harness connector pins for
pump actuator (WP 0330, Vol
damage.
2).
2. If not damaged, proceed to
next malfunction.
3. Inspect engine ECM wiring
1. If damaged, replace engine
harness fuel pump actuator
ECM wiring harness WP
connector W25 C9 for damage
0334, Vol 2).
and loose pins.
2. If not damaged, proceed to
next malfunction.
6. Fuel pump actuator resistance
Measure resistance between W25
1. If resistance is 5 Ohm (Ω) or
error.
C9 fuel pump actuator SIGNAL pin
more, replace fuel pump
(pin 1) and fuel pump actuator
actuator (WP 0330, Vol 2).
RETURN pin (pin 2) (WP 0443, Vol
3 and WP 0448, Vol 3, Figure 40).
2. If resistance is less than 5 Ω,
proceed to next malfunction.
7. Fuel pump actuator short to
Measure resistance between W25
1. If resistance is less than 100
ground.
C9 fuel pump actuator SIGNAL pin
Ω, replace fuel pump actuator
(pin 1) and engine block ground
(WP 0330, Vol 2).
(WP 0443, Vol 3 and WP 0448, Vol
3, Figure 41).
2. If resistance is more than 100
Ω, proceed to next
malfunction.
8. Engine harness resistance error.
1. Disconnect engine ECM wiring
harness W25 C1 from ECM (WP
0451, Vol 3, Figure 45).
1. If resistance is 5 Ω or more,
2. Measure resistance between
W25 C1 fuel pump actuator
replace engine ECM wiring
SIGNAL pin (pin 2) and fuel
harness (WP 0334, Vol 2).
pump actuator RETURN pin (pin
32) (WP 0443, Vol 3 and WP
0448, Vol 3, Figure 42).
2. If resistance is less than 5 Ω,
proceed to next malfunction.
0034-4