Doosan D20S-5 Operation & Maintenance Manual page 107

Table 2. MI-07 Diagnostic Fault Codes (Flash Codes)
DFC PROBABLE FAULT
NONE
12 Signifies the end of one pass
through the fault list
Inj1Open
Gasoline Injector 1 open
131
circuit, broken injector 1 wire
or defective injector
Inj2Open
Gasoline Injector 2 open
132
circuit, broken injector 2 wire
or defective injector
Inj3Open
Gasoline Injector 3 open
133
circuit, broken injector 3 wire
or defective injector
Inj4Open
Gasoline Injector 4 open
134
circuit, broken injector 4 wire
or defective injector
ECTRangeLow
141
Coolant Sensor failure or
(14)
shorted to GND
ECTRangeHigh
151
Coolant sensor disconnected
(15)
or open circuit
(*) Fault actions shown are default values specified by the OEM.
FAULT ACTION *
NONE
(1) TurnOnMil
(2) Disable
LiquidO2Ctrl
(3) Delayed
EngineShutdown
(1) TurnOnMil
(2) Disable
LiquidO2Ctrl
(3) Delayed
EngineShutdown
(1) TurnOnMil
(2) Disable
LiquidO2Ctrl
(3) Delayed
EngineShutdown
(1) TurnOnMil
(2) Disable
LiquidO2Ctrl
(3) Delayed
EngineShutdown
(1) TurnOnMil
(2) DelayedEngine
Shutdown
(1) TurnOnMil
(2) DelayedEngine
Shutdown
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CORRECTIVE ACTION FIRST CHECK
None, used as end of the fault list
identification
Check INJ1 wiring for an open circuit
SECM (Signal) A5 to Injector 1 Pin A
Switched 12V to Injector 1 Pin B
Check Injector 1 Resistance, 12 to14
ohms (cold)
Check INJ2 wiring for an open circuit
SECM (Signal) A8 to Injector 2 Pin A
Switched 12V to Injector 2 Pin B
Check Injector 2 Resistance, 12 to14
ohms (cold)
Check INJ3 wiring for an open circuit
SECM (Signal) A4 to Injector 3 Pin A
Switched 12V to Injector 3 Pin B
Check Injector 3 Resistance, 12 to14
ohms (cold)
Check INJ4 wiring for an open circuit
SECM (Signal) A7 to Injector 4 Pin A
Switched 12V to Injector 4 Pin B
Check Injector 4 Resistance, 12 to 14
ohms (cold)
Check ECT sensor connector and wiring
for a short to GND
SECM (Signal) Pin B15 To ECT Pin 3
SECM (Sensor GND) Pin B1 to ECT Pin 1
SECM (System GND) Pin A16, B17
Check if ECT sensor connector is
disconnected or for an open ECT circuit
SECM (Signal) Pin B15 to ECT Pin 3
SECM (Sensor GND) Pin B1 to ECT Pin 1
Operation Section