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
3. Measure resistance from
1. If resistance is more than 100
cylinder #3 DRIVER pin (pin 46)
kΩ, proceed to next test
at engine ECM wiring harness
connector W25 C1 to engine
block ground (WP 0443, Vol 3
and WP 0448, Vol 3, Figure
10).
2. If resistance is 100 kΩ or less,
replace engine ECM wiring
harness (WP 0334, Vol 2).
4. Measure resistance from
1. If resistance is more than 100
cylinder #4 DRIVER pin (pin 55)
kΩ, proceed to next test.
at engine ECM wiring harness
connector W25 C1 to engine
block ground (WP 0443, Vol 3
and WP 0448, Vol 3, Figure
10).
2. If resistance is 100 kΩ or less,
replace engine ECM wiring
harness (WP 0334, Vol 2).
5. Measure resistance from
1. If resistance is more than 100
cylinder #1 RETURN pin (pin
kΩ, proceed to next test.
53) at engine ECM wiring
harness connector W25 C1 to
engine block ground (WP 0443,
Vol 3 and WP 0448, Vol 3,
Figure 10).
2. If resistance is 100 kΩ or less,
replace engine ECM wiring
harness (WP 0334, Vol 2).
6. Measure resistance from
1. If resistance is more than 100
cylinder #2 RETURN pin (pin
kΩ, proceed to next test.
59) at engine ECM wiring
harness connector W25 C1 to
engine block ground (WP 0443,
Vol 3 and WP 0448, Vol 3,
Figure 10).
2. If resistance is 100 kΩ or less,
replace engine ECM wiring
harness (WP 0334, Vol 2).
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