TM 5-3895-385-23-1
0057
Table 1. SPN#645, FMI#5 ― High Resistance or No Current at Number Four Injector
DRIVER or RETURN Pin -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Inspect engine ECM wiring
1. If damaged, replace the 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. Open circuit in engine ECM
Measure resistance between
1. If resistance is 2 Ohms (Ω) or
wiring harness.
cylinder #4 DRIVER pin (pin 55)
more, proceed to next
and cylinder #4 RETURN pin (pin
malfunction.
52) at engine ECM wiring harness
W25 C1 (WP 0443, Vol 3 and WP
0448, Vol 3, Figure 10).
2. If resistance is less than 2 Ω,
replace injector from #4 cylinder
with injector from #1 cylinder
(WP 0338, Vol 2), and proceed
to malfunction 11.
7. Injector harness pass-through
1. Remove air intake connection
pins damaged.
as needed for access (WP
0345, Vol 2).
2. Disconnect engine ECM wiring
harness W25 C4 from pass-
through connector (WP 0451,
Vol 3, Figure 46).
3. Inspect engine ECM wiring
1. If damaged, replace the engine
harness W25 C4 connector and
ECM wiring harness (WP 0334,
pins at the pass-through
Vol 2).
connector for damage.
2. If no damage is found, proceed
to next test.
4. Inspect injector harness pass-
1. If damaged, replace pass-
through connector and
through connector (WP 0338,
connector pins for damage.
Vol 2).
2. If no damage is found, proceed
to next malfunction.
0057-4