Doosan G20P-5, Service Manual, Page: 265 / 306

G424F(FE) Service Manual Chapter 9. Advanced Diagnostics 263
Table 2. Diagnostic Fault Codes (Flash Codes) cont’d.
DFC PROBABLE FAULT
FAULT
ACTION *
CORRECTIVE ACTION
FIRST CHECK
221
(22)
TPS1RangeLow
TPS1 sensor voltage out of range
low, normally set if the TPS1 signal
has shorted to ground, circuit has
opened or sensor has failed
TurnOnMil
Check throttle connector connection and
TPS1 sensor for an open circuit or short to
GND
SECM Pin B23 (signal) to ETC Pin 6 SECM
Pin B1 (sensor GND) to ETC Pin 2
SECM (system GND) Pin A16, B17
222
TPS2RangeLow
TPS2 sensor voltage out of range
low, normally set if the TPS2 signal
has shorted to ground, circuit has
opened or sensor has failed
TurnOnMil
Check throttle connector connection and
TPS2 sensor for an open circuit or short to
GND
SECM Pin B4 (signal) to ETC Pin 5
SECM Pin B1 (sensor GND) to ETC Pin 2
SECM (system GND) Pin A16, B17
231
(23)
TPS1RangeHigh
TPS1 sensor voltage out of range
high, normally set if the TPS1
signal has shorted to power or the
ground for the sensor has opened
TurnOnMil
Check throttle connector and TPS1 sensor
wiring for a shorted circuit
SECM Pin B23 (signal) to ETC Pin 6
SECM Pin B1 (sensor GND) to ETC Pin 2
232
TPS2RangeHigh
TPS2 sensor voltage out of range
high, normally set if the TPS2
signal has shorted to power or the
ground for the sensor has opened
TurnOnMil
Check throttle connector and TPS1 sensor
wiring for a shorted circuit
SECM Pin B4 (signal) to ETC Pin 5
SECM Pin B1 (sensor GND) to ETC Pin 2
241
(24)
TPS1AdaptLoMin
Learned closed throttle end of
TPS1 sensor range lower than
expected
None
Check the throttle connector and pins for
corrosion.
To check the TPS disconnect the throttle
connector and measure the resistance from:
TPS Pin 2 (GND) to
Pin 6 (TPS1 SIGNAL) (0.7
Ω ± 30%)
TPS Pin 3 (PWR) to
Pin 6 (TPS1 SIGNAL) (1.4
Ω ± 30%)
242
TPS2AdaptLoMin
Learned closed throttle end of
TPS2 sensor range lower than
expected
None
Check the throttle connector and pins for
corrosion.
To check the TPS disconnect the throttle
connector and measure the resistance from:
TPS Pin 2 (GND) to
Pin 5 (TPS2 SIGNAL) (1.3K
Ω ± 30%)
TPS PIN 3 (PWR) to
PIN 5 (TPS2 SIGNAL) (0.6K
Ω ± 30%)
251
(25)
TPS1AdaptHiMax
Learned WOT end of TPS1 sensor
range higher than expected None N/A
252
TPS2AdaptHiMax
Learned WOT end of TPS2 sensor
range higher than expected
None N/A
271
TPS1AdaptHiMin
Learned WOT end of TPS1 sensor
range lower than expected None N/A
(*) Fault actions shown are default values specified by the OEM.