Doosan D20S-5 Operation & Maintenance Manual page 114

Operation Section Operation Section
Table 2. Diagnostic Fault Codes (Flash Codes) cont'd. Table 2. Diagnostic Fault Codes (Flash Codes) cont'd.
D D F F C C P P RO
LSDFault_Dither1 LSDFault_Dither1
Dither Valve 1 Fault, signal Dither Valve 1 Fault, signal
711 711
has opened or shorted to has opened or shorted to
(71) (71) ground or power or defective ground or power or defective
dither 1 valve dither 1 valve
LSDFault_Dither2 LSDFault_Dither2
Dither Valve 2 Fault, signal Dither Valve 2 Fault, signal
712 712 has opened or shorted to has opened or shorted to
ground or power or defective ground or power or defective
dither 2 valve dither 2 valve
713 713 LSDFault_CSValve LSDFault_CSValve
LSDFault_CheckEngine LSDFault_CheckEngine
Check Engine Lamp Fault, Check Engine Lamp Fault,
714 714 signal has opened or shorted signal has opened or shorted
to ground or power or to ground or power or
defective check engine lamp defective check engine lamp
LSDFault_CrankDisable LSDFault_CrankDisable
Crank Disable Fault, signal Crank Disable Fault, signal
715 715 has opened or shorted to has opened or shorted to
ground or power or defective ground or power or defective
crank disable relay crank disable relay
LSDFault_FuelPump LSDFault_FuelPump
Fuel pump fault, signal has Fuel pump fault, signal has
716 716 opened, shorted to ground or opened, shorted to ground or
power, or defective fuel power, or defective fuel
pump pump
LSDFault_LockOff LSDFault_LockOff
Fuel lock off Valve Fault, Fuel lock off Valve Fault,
717 717 signal has opened or shorted signal has opened or shorted
to ground or power or to ground or power or
defective Fuel lock off valve defective Fuel lock off valve
LSDFault_MIL LSDFault_MIL
Malfunction Indicator Lamp Malfunction Indicator Lamp
718 718 Fault, signal has opened or Fault, signal has opened or
shorted to ground or power shorted to ground or power
or defective MIL lamp or defective MIL lamp
GasFuelAdaptRangeLo GasFuelAdaptRangeLo
721 721 In LPG mode, system had to In LPG mode, system had to
(72) (72) adapt rich more than adapt rich more than
expected expected
GasDesEquivLo GasDesEquivLo
In LPG mode, system had to In LPG mode, system had to
722 722 adapt rich more than adapt rich more than
expected expected
ROBA BABL BLE E F F AU AULT LT
-111- -111-
FA FAUL ULT T A A CT CTI I ON ON * * CO CORR
Check FTV1 for an open wire or FTV connector Check FTV1 for an open wire or FTV connector
(1) TurnOnMil (1) TurnOnMil
being disconnected being disconnected
(2) Disable (2) Disable
FTV1 Pin 1 (signal) to SECM Pin A1 FTV1 Pin 1 (signal) to SECM Pin A1
FTV1 Pin 2 (power) to SECM (DRVP) Pin A23 FTV1 Pin 2 (power) to SECM (DRVP) Pin A23
GasO2 Ctrl GasO2 Ctrl
(3) Disable (3) Disable Check FTV1 for an open coil by disconnecting Check FTV1 for an open coil by disconnecting
the FTV connector and measuring the the FTV connector and measuring the
GasPost O2Ctrl GasPost O2Ctrl
resistance (~26 resistance (~26
Check FTV1 for an open wire or FTV connector Check FTV1 for an open wire or FTV connector
(1) TurnOnMil (1) TurnOnMil
being disconnected or signal shorted to GN being disconnected or signal shorted to GND D
(2) Disable (2) Disable
FTV2 Pin 1 (signal) to SECM Pin A2 FTV2 Pin 1 (signal) to SECM Pin A2
FTV2 Pin 2 (power) to SECM (DRVP) Pin A23 FTV2 Pin 2 (power) to SECM (DRVP) Pin A23
GasO2 Ctrl GasO2 Ctrl
Check FTV1 for an open coil by disconnecting Check FTV1 for an open coil by disconnecting
(3) Disable (3) Disable
the FTV connector and measuring the the FTV connector and measuring the
GasPost O2Ctrl GasPost O2Ctrl
resistance (~26 resistance (~26
None None
Check 'Check Engine Lamp' for an open wire or Check 'Check Engine Lamp' for an open wire or
None None
shorted to GND shorted to GND
None None
Check fuel pump for an open wire or connector Check fuel pump for an open wire or connector
being disconnected or signal shorted to GND D being disconnected or signal shorted to GN
Fuel Pump Pin B (signal) from SECM Pin A13 Fuel Pump Pin B (signal) from SECM Pin A13
Fuel Pump Pin A (power) from main relay 1 Pin Fuel Pump Pin A (power) from main relay 1 Pin
A23 A23
TurnOnMil TurnOnMil
Check Fuel Pump for an open coil by Check Fuel Pump for an open coil by
disconnecting the Fuel Pump connector and disconnecting the Fuel Pump connector and
measuring the resistance measuring the resistance
(~26 (~26
Ω Ω
Check for 12V to fuel pump Check for 12V to fuel pump
Check fuel lock off valve for an open wire or r Check fuel lock off valve for an open wire o
connector being disconnected or signal shorted connector being disconnected or signal shorted
to GND to GND
Lock off Pin B (signal) from SECM Pin A11 Lock off Pin B (signal) from SECM Pin A11
Lock off Pin A (power) from main relay 1 Pin Lock off Pin A (power) from main relay 1
TurnOnMil TurnOnMil
A23 A23
Check Check
disconnecting the lock off valve connector and disconnecting the lock off valve connector and
measuring the resistance (~26 measuring the resistance (~26
Check for 12V to lock off valve Check for 12V to lock off valve
None None
(1) TurnOnMil (1) TurnOnMil
Check for vacuum leaks. Check for vacuum leaks.
(2) Disable (2) Disable
Check fuel trim valves, e.g. leaking valve or Check fuel trim valves, e.g. leaking valve or
GasO2 Ctrl GasO2 Ctrl
hose hose
(3) Disable (3) Disable
Check for missing orifice(s). Check for missing o
GasPost O2Ctrl GasPost O2Ctrl
None None
RREC ECT T IV IVE E AC ACTI TION ON FI FIR R ST
± 2 ± 2 ) )
Ω Ω Ω Ω
± 2 ± 2 ) )
Ω Ω Ω Ω
N/A N/A
N/A N/A
± 3 ± 3 ) )
Ω Ω
lock off valve for an open c lock off valve for an open coil by
Ω Ω
None None
rifice(s).
N/A N/A
ST CH CHEC ECK K
Pin
oil by
± 3 ± 3 ) )
Ω Ω