D21 20
Amber
2
2
Engine oil level #2 low- data valid but below
normal operational range-moderately severe
level
Start auxiliary device-oil tank empty (diethyl
ether spray)
Amber
1
1
Gearbox output shaft (tail shaft) speed low-
data valid but below normal operational
range-moderately severe level
Multiple unit synchronization switch circuit- data
erratic, intermittent, or incorrect
Red
7
7
Fuel control valve-mechanical block
Amber
3
3
#2 auxiliary input/output circuit- voltage above
normal, or shorted to high source
Amber
3
3
#3 auxiliary input/output circuit- voltage above
normal, or shorted to high source
Red
4
4
Accelerator pedal or lever idle validation
circuit-voltage below normal, or shorted to low
source
Red
0
0
Oil atomizer measuring pipe#1 pressure high-
data valid but above normal operational
range-moderately severe level
Amber
2
2
Fuel pressure sensor fault
White
0
0
Engine blow-by- moderately severe level
None
14
31
Exchange engine oil and filter
Amber
3
3
Extended crankcase blow-by pressure
circuit-voltage above normal, or shorted to high
source
Amber
4
4
Extended crankcase blow-by pressure
circuit-voltage below normal, or shorted to low
source
None
2
2
Engine speed/position sensor #2-camshaft
sync error
777
Amber
0
0
Turbocharger #1 turbo machine inlet
temperature high- data valid but above normal
operational range-moderately severe level
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