4-22
Copyright 2017 Cummins Inc.
TABLE 4-12. ENGINE CRANKS BUT DOES NOT START
WARNING
Many troubleshooting procedures present hazards that can result in severe personal inju-
ry or death. Only qualified service personnel with knowledge of fuels, electricity, and machinery haz-
ards should perform service procedures. Review Important Safety Instructions page.
*Install harness tool between A32 J4/P4. Attempt to
start and check for ground signal at A32 J4−8.
1. The run signal is not getting out of the
digital board (A32). A32 may be bad.
1. If there is no ground signal at A32 J4−8, replace
A32.
Indicator(s) Possible Cause Corrective Action
“OVERCRANK”
(222)
message
−and
Run LED DS12
on the
engine interface
board (A31)
is off.
NOTE:
These
indications
suggest that the
PCC has NOT
sent a run
signal −
(fuel solenoid
enable signal)
out to the
governor
module and the
fuel solenoid.
The run signal from the digital board (A32)
is not being processed by the engine inter-
face board (A31).
2. If there is a ground signal at A32 J4−8, replace
A31.
2. The run signal is not being processed
by the engine interface board (A31).
A31 may be bad.
“FAIL TO
CRANK”
(221)
message
NOTE:
The engine is
cranking but
shutting down
on a 221 fault.
The mag pickup signal is not being
sensed.
Refer to the mag pickup shutdown message
(220).
*CAUTION: Wearing a wrist strap, set S12 to Off and A32 S5 to Standby before connecting/disconnecting harness plugs.
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