TM 5-3895-385-23-1
0056
Table 1. SPN#630, FMI#31 ― Calibration Program Memory (RAM) Corruption -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Check active engine faults
1. If any other fault code is
screen for fault code SPN#630,
displayed, turn keyless engine
FMI#31.
switch to the OFF position (TM
5-3895-385-10), and proceed to
the appropriate troubleshooting
procedure.
2. If fault code SPN#630, FMI#31
is displayed, turn keyless
engine switch to the OFF
position (TM 5-3895-385-10),
and proceed to next
malfunction.
2. Battery connection loose or
1. Inspect battery terminal
1. If loose or corroded, clean and
corroded.
connections for loose or
tighten terminal connections
corroded condition.
(WP 0357, Vol 2).
2. If not loose or corroded,
proceed to next test.
2. Inspect batteries and battery
1. If damaged, replace damaged
terminals for damage.
battery (WP 0357, Vol 2).
2. If not damaged, proceed to next
malfunction.
3. Battery voltage incorrect.
1. Disconnect the engine interface
wiring harness connector W16
J3 from the ECM (WP 0451, Vol
3, Figure 36).
2. Measure the resistance
1. If more than 10 Ohms (Ω),
between the engine interface
proceed to malfunction 4.
wiring harness connector W16
J3 SUPPLY (+) (pin 3) to the
positive (+) battery terminal
(WP 0443, Vol 3 and WP 0448,
Vol 3, Figure 12).
2. If less than 10 Ω, proceed to
next test.
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