Doosan D20S-5 Operation & Maintenance Manual page 118

Operation Section
Table 2. Diagnostic Fault Codes (Flash Codes) cont'd.
DFC PROBABLE FAULT
SensVoltRangeLow
551
Sensor reference voltage
(55)
XDRP too low
SensVoltRangeHigh
561
Sensor reference voltage
(56)
XDRP too high
HardOverspeed
Engine speed has
571
exceeded the third level (3
(57)
of 3) of overspeed
protection
MediumOverspeed
Engine speed has
572 exceeded the second level
(2 of 3) of overspeed
protection
SoftOverspeed
Engine speed has
573 exceeded the first level (1
of 3) of overspeed
protection
APP1RangeLow
APP1 sensor voltage out
of range low, normally set
611
if the APP1 signal has
(61)
shorted to ground, circuit
has opened or sensor has
failed
(*) Fault actions shown are default values specified by the OEM.
FAULT ACTION *
(1) TurnOnMil
(2) DelayedEngine
Shutdown
(1) TurnOnMil
(2) DelayedEngine
Shutdown
(1) TurnOnMil
(2) HardRevLimit
(3) EngineShutdown
(1) TurnOnMil
(2) MediumRevLimit
(3) DelayedEngine
Shutdown
(1) TurnOnMil
(2) SoftRevLimit
TurnOnMil
-116-
CORRECTIVE ACTION FIRST CHECK
Measure transducer power at the
TMAP connector with a multimeter
TMAP Pin 3 XDRP +5 Vdc to
TMAP Pin 1 XDRG GND
Verify transducer power at the
SECM with a multimeter
SECM Pin B24 +5 Vdc to SECM
Pin B1 XDRG GND
Verify transducer power at
ETC with a multimeter
ETC Pin 3 XDRP PWR to ETC Pin 2 XDRG
GND
Verify transducer power to the foot pedal with a
multimeter.
Measure transducer power at the
TMAP connector with a multimeter
TMAP Pin 3 XDRP +5 Vdc to
TMAP Pin 1 XDRG GND
Verify transducer power at the
SECM with a multimeter
SECM Pin B24 +5 Vdc to
SECM Pin B1 XDRG GND
Verify transducer power at ETC with a
multimeter
ETC Pin 3 XDRP PWR to ETC Pin 2 XDRG
GND
Verify transducer power to the foot pedal with a
multimeter.
Usually associated with additional ETC faults
Check for ETC Sticking or other ETC faults
•
Verify if the lift truck was motored down a steep
grade
Usually associated with additional ETC faults
Check for ETC Sticking or other ETC faults
•
Verify if the lift truck was motored down a steep
grade
Usually associated with additional ETC faults
Check for ETC Sticking or other ETC faults
•
Verify if the lift truck was motored down a steep
grade
Check foot pedal connector
Check APP1 signal at SECM PIN B7
•