Doosan D20S-5 Operation & Maintenance Manual page 110

Operation Section
Table 2. Diagnostic Fault Codes (Flash Codes) cont'd.
DFC PROBABLE FAULT
TPS2AdaptHiMin
Learned WOT end of TPS2
272
sensor range lower than
expected
TPS1AdaptLoMax
Learned closed throttle end
281
of TPS1 sensor range higher
than expected
TPS2AdaptLoMax
Learned closed throttle end of
282
TPS2 sensor range higher
than expected
TPS_Sensors_Conflict
TPS sensors differ by more
than expected amount
NOTE: The TPS is not a
291 serviceable item and can
only be repaired by
replacing the DV-EV throttle
assembly.
TPS_Intermittent
Signal from the SECM to the
292
throttle position sensor power
or ground is not continuous
MAPTimeRangeLow
Manifold Absolute Pressure
sensor input is low, normally
331
set if the TMAP pressure
(33) signal wire has been
disconnected or shorted to
ground or the circuit has
opened to the SECM
FAULT ACTION *
None
None
None
Check the throttle connector and pins for
corrosion.
To check the TPS disconnect the throttle
connector and measure the resistance
(1) TurnOnMil
from:
(2) CutThrottle
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%)
Check the throttle connector and pins for
corrosion.
Check continuity between throttle body Pin
3 and SECM Pin B24 (XDPR +5Vdc)
Check continuity between throttle body Pin
2 and SECM Pin B1 (sensor ground)
Check continuity on TPS1:
TurnOnMil
between throttle body Pin 6 and SECM Pin
B23
Check continuity on TPS2:
between throttle body Pin 5 and SECM Pin
B4
*Note: move wires around when checking
for continuity to duplicate intermittent signal
Check TMAP connector and MAP signal
wiring for an open circuit
TMAP Pin 4 to SECM Pin B18 (signal)
TMAP Pin 1 to SECM Pin B1 (sensor GND)
TMAP Pin 3 to SECM Pin B24 (XDRP +5
Vdc)
Check the MAP sensor by disconnecting
TurnOnMil
the TMAP connector and measuring at the
sensor:
TMAP Pin 1(GND) to
Pin 4 (pressure signal KPA) (2.4kΩ - 8.2kΩ)
TMAP Pin 3 (power) to
Pin 4 (pressure signal KPA) (3.4kΩ - 8.2kΩ)
-108-
CORRECTIVE ACTION FIRST CHECK
N/A
N/A
N/A