Doosan D20S-5 Operation & Maintenance Manual page 108

Operation Section Operation Section
Table 2. Diagnostic Fault Codes (Flash Codes) cont'd. Table 2. Diagnostic Fault Codes (Flash Codes) cont'd.
DFC C DF
EST4_Open EST4_Open
424 424 EST4 output open, possibly EST4 output open, possibly
open EST4 signal or defective open EST4 signal or defective
spark module spark module
EST5_Open EST5_Open
425 425
EST5 output open, possibly EST5 output open, possibly
open EST5 signal or defective open EST5 signal or defective
spark module spark module
EST6_Open EST6_Open
426 426 EST6 output open, possibly EST6 output open, possibly
open EST6 signal or defective open EST6 signal or defective
spark module spark module
EST7_Open EST7_Open
EST7 output open, possibly EST7 output open, possibly
427 427
open EST7 signal or defective open EST7 signal or defective
spark module spark module
EST8_Open EST8_Open
EST8 output open, possibly EST8 output open, possibly
428 428
open EST8 signal or defective open EST8 signal or defective
spark module spark module
EST1_Short EST1_Short
EST1 output shorted high or EST1 output shorted high or
431 431 low, EST1 signal shorted to low, EST1 signal shorted to
ground or power or defective ground or power or
spark module spark module
(*) Fault actions shown are default values specified by the OEM. (*) Fault actions shown are default values specified by the OEM.
P P ROB ROBAB ABL L E E FA FAUL ULT T
defective
-105- -105-
FAUL FA ULT T AC ACT T ION ION * * CORR CO
Check coil driver wiring and connector Check coil driver wiring and connector for
open circuit open circuit
SECM Pin A6 (EST4) to OEM ignition SECM Pin A6 (EST4) to OEM
system. See application manual. system. See application manual.
TurnOnMil TurnOnMil Verify GND on ignition module Verify GND on ignition module
Pin A (of both connectors) Pin A (of both connectors)
Verify +12 Vdc on ignition module Verify +12 Vdc on ignition module
Pin B (of both connectors) Pin B (of both connectors)
Refer to application manual for specific Refer to application manual for specific
engine details. engine details.
None None
None None
None None
None None
None None
RREC ECTI TIVE VE AC ACTI TION ON FI FIRS RST T CH
ignition
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
CHEC ECK K
for