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
8. Open circuit in pass-through
Measure resistance between
1. If resistance is 2 Ω or more,
connector.
cylinder #4 DRIVER pin (pin 3) and
proceed to next malfunction.
cylinder #4 RETURN pin (pin 4) at
injector pass-through connector
(WP 0443, Vol 3 and WP 0448, Vol
3, Figure 5).
2. If resistance is less than 2 Ω,
replace engine ECM wiring
harness (WP 0334, Vol 2).
9. Injector harness or pass-
1. Remove valve cover (WP 0327,
through connector pins
Vol 2).
damaged.
2. Disconnect ECM wiring harness
W25 C4 from pass-through
connector (WP 0451, Vol 3,
Figure 46).
3. Inspect injector harness
1. If damaged, replace injector
connector and connector pins
harness (WP 0338, Vol 2).
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.
10.Open circuit on injector
1. Disconnect injector harness
solenoid.
from injector #4 solenoid (WP
0338, Vol 2).
2. Measure resistance between
1. If resistance is 2 Ω or more,
injector #4 DRIVER pin and
replace injector (WP 0338, Vol
injector #4 RETURN pin on
2).
injector solenoid (WP 0443, Vol
3 and WP 0448, Vol 3, Figure
6).
2. If resistance is less than 2 Ω,
replace injector harness (WP
0338, Vol 2).
0057-5