TM 5-3895-385-23-1
0050
Table 1. SPN#612, FMI#2 ― Signals Reversed On Engine Speed
and Camshaft Position Sensors -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Engine speed sensor is
Inspect engine speed sensor for
1. If damaged, replace engine ECM
damaged.
damage (WP 0334, Vol 2).
speed sensor (WP 0333, Vol 2).
2. If not damaged, proceed to next
malfunction.
3. Engine camshaft position sensor
Inspect engine camshaft position
1. If damaged, replace engine
is damaged.
sensor for damage (WP 0334, Vol
camshaft position sensor (WP
2.
0333, Vol 2).
2. If not damaged, proceed to next
malfunction.
4. Engine ECM harness connectors
1. Disconnect engine ECM wiring
are damaged.
harness connector W25 C11
from engine camshaft position
sensor (WP 0451, Vol 3, Figure
46).
2. Inspect engine ECM wiring
1. If damaged, replace engine ECM
harness connector W25 C11 for
wiring harness W25 (WP 0334,
damage.
Vol 2).
2. If not damaged, restore
equipment to original condition,
and proceed to next test.
3. Disconnect engine ECM wiring
harness connector W25 C12
from engine speed sensor (WP
0451, Vol 3, Figure 46).
4. Inspect engine ECM wiring
1. If damaged, replace engine ECM
harness connector W25 C12 for
wiring harness W25 (WP 0334,
damage.
Vol 2).
2. If not damaged, restore
equipment to original condition,
and proceed to next test.
5. Turn BATTERY DISCONNECT
switch to OFF position (TM 5-
3895-385-10), and wait for 5
seconds.
6. Install fuse box (WP 0277, Vol
2).
0050-2
