Doosan D20S-5 Operation & Maintenance Manual page 108

Operation Section
Table 2. MI-07 Diagnostic Fault Codes (Flash Codes) cont'd.
DFC PROBABLE FAULT
ECTOverTempFault
Engine coolant temperature is
161 high. The sensor has
(16) measured an excessive
coolant temperature typically
due to the engine overheating.
ECT_IR_Fault
Engine coolant temperature
171 not changing as expected
FuelSelectConflict
Conflict in fuel select signals,
181 normally set if both of the fuel
select signals are shorted to
ground
CamEdgesFault
No CAM signal when engine is
191 known to be rotating, broken
crankshaft sensor leads or
defective CAM sensor
CamSyncFault
Loss of synchronization on the
CAM sensor, normally due to
192
noise on the signal or an
intermittent connection on the
CAM sensor
CrankEdgesFault
No crankshaft signal when
engine is known to be rotating,
193
broken crankshaft sensor
leads or defective crank
sensor
CrankSyncFault
Loss of synchronization on the
crankshaft sensor, normally
194
due to noise on the signal or
an intermittent connection on
the crankshaft sensor
(*) Fault actions shown are default values specified by the OEM.
FAULT ACTION *
(1) TurnOnMil
(2) DelayedEngine
Shutdown
TurnOnMil
(Disabled in all
software
MI07SEQ062V05 and
higher)
(1) TurnOnMil
(2) Delayed
EngineShutdown
None
None
None
None
-106-
CORRECTIVE ACTION FIRST CHECK
Check coolant system for radiator
blockage, proper coolant level and for
leaks in the system.
Possible ECT short to GND, check ECT
signal wiring
SECM (Signal) Pin B15 to ECT Pin 3
SECM (Sensor GND) Pin B1 to ECT Pin 1
SECM (System GND) Pin A16, B17
Check regulator for coolant leaks
Check for coolant system problems, e.g.
defective or stuck thermostat
Check fuel select switch connection for a
short to GND
SECM (SIGNAL) Pin A12
SECM (SIGNAL) Pin A15
SECM (Sensor GND) Pin B1
Check CAM sensor connections
SECM (SIGNAL) Pin B10 to CAM sensor
Pin 2
SECM (Sensor GND) Pin B1 to CAM
sensor Pin 3
Switched 12V to CAM sensor Pin 1
Check for defective CAM sensor
Check CAM sensor connections
SECM (SIGNAL) Pin B10 to CAM sensor
Pin 2
SECM (Sensor GND) Pin B1 to CAM
sensor Pin 3
Switched 12V to CAM sensor Pin 1
Check for defective CAM sensor
Check Crankshaft sensor connections
SECM (SIGNAL) Pin B5 to Crank sensor
Pin 3
SECM (Sensor GND) PIN B1 to Crank
sensor Pin 2
Switched 12V to Crank sensor Pin 1
Check for defective Crank sensor
Check Crankshaft sensor connections
SECM (SIGNAL) Pin B5 to Crank sensor
Pin 3
SECM (Sensor GND) Pin B1 to Crank
sensor Pin 2
Switched 12V to Crank sensor Pin 1
Check for defective Crank sensor