Doosan D50S-5 Operation & Maintenance Manual page 105

normally due to noise on the normally due to noise on the
signal or an intermittent signal or an intermittent
connection on the crankshaft connection on the crankshaft
sensor sensor
TPS1RangeLow TPS1RangeLow
TPS1 sensor voltage out of TPS1 sensor voltage out of
range low, normally set if the range low, normally set if the
221 221
(22) (22)
TPS1 signal has shorted to TPS1 signal has shorted to
ground, circuit has opened or ground, circuit has opened or
sensor has failed sensor has failed
TPS2RangeLow TPS2RangeLow
TPS2 sensor voltage out of TPS2 sensor voltage out of
range low, normally set if the range low, normally set if the
222 222
TPS2 signal has shorted to TPS2 signal has shorted to
ground, circuit has opened or ground, circuit has opened or
sensor has failed sensor has failed
TPS1RangeHigh TPS1RangeHigh
TPS1 sensor voltage out of TPS1 sensor voltage out of
range high, normally set if range high, normally set if
231 231
(23) (23)
the TPS1 signal has shorted the TPS1 signal has shorted
to power or the ground for to power or the ground for
the sensor has opened the sensor has opened
TPS2RangeHigh TPS2RangeHigh
TPS2 sensor voltage out of TPS2 sensor voltage out of
range high, normally set if range high, normally set if
232 232
the TPS2 signal has shorted the TPS2 signal has shorted
to power or the ground for to power or the ground for
the sensor has opened the sensor has opened
TPS1AdaptLoMin TPS1AdaptLoMin
Learned closed throttle end Learned closed throttle end
241 241
(24) (24)
of TPS1 sensor range lower of TPS1 sensor range lower
than expected than expected
(*) Fault actions shown are default values specified by (*) Fault actions shown are default values specified by the OEM.
Table 2. Table 2. MI-07 Diagnostic Fault Codes (Flash Codes) cont'd. MI-07 Diagnostic Fault Codes (Flash Codes) cont'd.
DFC DFC
TPS2AdaptLoMin TPS2AdaptLoMin
PROBABLE E FAULT PROBABL FAULT
SECM (Sensor GND) Pin B1 to Crank SECM (Sensor GND) Pin B1 to Crank
sensor Pin 2 sensor Pin 2
Switched 12V to Crank sensor Pin 1 Switched 12V to Crank sensor Pin 1
Check for defective Crank sensor Check for defective Crank sensor
Check throttle connector connection Check throttle connector connection
and TPS1 sensor for an open circuit or and TPS1 sensor for an open ci
short to GND short to GND
TurnOnMil TurnOnMil
SECM Pin B23 (signal) to ETC Pin 6 SECM Pin B23 (signal) to ETC Pin 6
SECM Pin B1 (sensor GND) to SECM Pin B1 (sensor GND) to
ETC Pin 2 ETC Pin 2
SECM (system GND) Pin A16, B17 SECM (system GND) Pin A16, B17
Check throttle connector connection Check throttle connector connection
and TPS2 sensor for an open circuit or and TPS2 sensor for an open ci
short to GND short to GND
TurnOnMil TurnOnMil
SECM Pin B4 (signal) to ETC Pin 5 SECM Pin B4 (signal) to ETC Pin 5
SECM Pin B1 (sensor GND) to SECM Pin B1 (sensor GND) to
ETC Pin 2 ETC Pin 2
SECM (system GND) Pin A16, B17 SECM (system GND) Pin A16, B17
Check throttle connector and TPS1 Check throttle connector and TPS1
sensor wiring for a shorted circuit sensor wiring for a shorted circuit
TurnOnMil TurnOnMil
SECM Pin B23 (signal) to ETC Pin 6 SECM Pin B23 (signal) to ETC Pin 6
SECM Pin B1 (sensor GND) to SECM Pin B1 (sensor GND) to
ETC Pin 2 ETC Pin 2
Check throttle connector and TPS1 Check throttle connector and TPS1
sensor wiring for a shorted circuit sensor wiring for a shorted circuit
SECM Pin B4 (signal) to ETC SECM Pin B4 (signal) to ETC
TurnOnMil TurnOnMil
Pin 5 Pin 5
SECM pin B1 (sensor GND) to SECM pin B1 (sensor GND) to
ETC Pin 2 ETC Pin 2
Check the throttle connector and pins Check the throttle connector and pins
for corrosion. for corrosion.
To check the TPS disconnect the To check the TPS disconnect the
throttle connector and measure the throttle connector and measure the
None None
resistance from: resistance from:
TPS Pin 2 (GND) to Pin 6 (TPS1 TPS Pin 2 (GND) to Pin 6 (TPS1
SIGNAL) (0.7 SIGNAL) (0.7
TPS Pin 3 (PWR) to Pin 6 (TPS1 TPS Pin 3 (PWR) to Pin 6 (TPS1
SIGNAL) (1.4 SIGNAL) (1.4
the OEM.
104 104
FAULT ACTION FAULT ACTION * *
Check the throttle connector and pins Check the throttle connector and pins
for corrosion. for corrosion.
To check the TPS disconnect the To check the TPS disconnect
throttle connector and measure the throttle connector and measure the
rcuit or
rcuit or
± 30%) ± 30%)
Ω Ω
± 30%) ± 30%)
Ω Ω
Operation Section Operation Section
CORRECTIVE ACTION CORRECTIVE ACTION
FIRST CHECK FIRST CHECK
the