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TM 9-2320-360-20-1
NOTE
The following flow chart should only be used if DDEC troubleshooting was started on
p. 2-80 and you were referred here.
NOTE
Table 2-7 shows which injector is associated with each of the failure codes.
Table 2-7. Injector Identification
FIRING
CODE
ORDER
CYLINDER
61
1
1 Left
62
2
3 Right
63
3
3 Left
64
4
4 Right
65
5
4 Left
66
6
2 Right
67
7
2 Left
68
8
1 Right
(1)
Start and warm engine to operating temperature (at least 86 F) (30 C).
(2)
Plug in DDR and select INJ RESP TIMES (Mode 10).
NOTE
Table 2-7 gives the firing sequence in relation to the code received.
(3)
Read DDR display of Injector response time (in firing order) through several cycles.
Note response time(s) of cylinder by number in fault code.
NOTE
If response time(s) is not 0.80 the following may be causing
intermittent failures.
a.
sticky valve (notify supervisor)
b.
air in fuel (refer to fuel system troubleshooting (b))
c.
low battery charge (refer to electrical system
troubleshooting (e))
d.
broken spring or armature on the injector (notify supervisor)
e.
problems In the charging system (loose alternator belt, bad
grounds, etc ) (refer to electrical system troubleshooting
(e))
f.
signs of insulation wear on injector harness (remove rocker
cover (para 3-2)
Check which codes (61-68) are displayed by
DDR.
2-253
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