TM 5-3895-385-23-1
0055
Table 1. SPN#630, FMI#2 ― Severe Loss of Data From ECM -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. If no other fault codes other
than fault code SPN#630,
FMI#2 are displayed, turn
keyless engine switch to OFF
position (TM 5-3895-385-10),
and proceed to next
malfunction.
2. Battery supply circuit resistance
1. Disconnect engine interface
error.
wiring harness connector W16
J3 from ECM (WP 0451, Vol 3,
Figure 36).
2. Measure resistance between
ECM battery SUPPLY (+) pins
(pins 3 and pin 4) of engine
interface wiring harness W16
J3 and positive (+) battery
terminal (WP 0443, Vol 3 and
WP 0448, Vol 3, Figure 12).
3. Measure resistance between
1. If resistance on either terminal
ECM battery SUPPLY (-) pins
is more than 10 Ohms (Ω),
(pins 1 and pin 2) of engine
proceed to malfunction 4.
interface wiring harness W16
J3 and engine block ground
(WP 0443, Vol 3 and WP 0448,
Vol 3, Figure 13).
2. If resistance on both terminals
is less than 10 Ω, proceed to
next malfunction.
3. Battery voltage incorrect.
1. Turn keyless engine switch to
the AUX position (TM 5-3895-
385-10), but do not start
engine.
2. Measure combined battery
1. If battery voltage is at least 12.4
voltage while attempting to start
Volts Direct Current (VDC)
engine (WP 0443, Vol 3 and
while cranking engine, turn
TM 5-3895-385-10).
keyless engine switch to OFF
position (TM 5-3895-385-10),
and proceed to next
malfunction.
0055-2
