Failure Codes Table; General Information On Troubleshooting - Komatsu WA900-3E0 Shop Manual

Failure codes table

Failure code table on engine service monitor
Failure code
D1EMKA Disconnection of parking brake interlock relay
D1EMKB Ground fault of parking brake interlock relay
D1EMKY Hot short of parking brake interlock relay
D1EPKA Disconnection of ladder drive pump relay
D1EPKB Ground fault of ladder drive pump relay
D1EPKY Hot short of ladder drive pump relay
D1EQKY Hot short of ladder operation alarm relay
Output failure (disconnection, ground fault) of
D1EQKZ
ladder operation alarm relay
D1ERKB Ground fault of ladder raise solenoid
Ladder raise solenoid output abnormality
D1ERKZ
(Open circuit, hot short circuit)
D1ESKB Ground fault of ladder lower solenoid
Output failure (disconnection, hot short) of lad-
D1ESKZ
der lower solenoid
Disconnection of power ladder controller
DBL0KR
CAN-NET signal
DBL0KT Write abnormality in non-volatile memory
Drop in power supply voltage (direct from bat-
DBL1KK
tery)
DBL2KK Pump Solenoid Power Low Error
DDB6KZ Parking brake system abnormality
DDDGKY Hot short of ladder operation switch
DDDKKY Hot short of ladder raise operation switch
DDDLKY Hot short of ladder lower operation switch
DK5VKX Failure on ladder angle sensor (out of range)
DK5VMA Power ladder system abnormality
DUM9KY Hot short of ladder indicator
Output failure (disconnection, ground fault) of
DUM9KZ
ladder indicator
DV00KY Hot short of ladder interlock caution
Output failure (disconnection, ground fault) of
DV00KZ
ladder interlock caution
DWNLKA Disconnection of ladder cushion valve
DWNLKB Ground fault of ladder cushion valve
DWNLKY Hot short of ladder cushion valve
WA900-3E0
Detail of failure

General information on troubleshooting

Component Action
Category of record
in charge code
P/L E03 Electrical system
P/L E03 Electrical system
P/L E03 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
ESM E01 Electrical system
P/L E01 Electrical system
P/L E03 Electrical system
P/L E03 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system
P/L E01 Electrical system

Failure codes table

4 0 - 5
Reference
document No.
Troubleshoot-
ing by failure
code
(Reference
document No.
undecided)
40-5