Failure Code [Dbl0Kr] (Power Ladder Controller Can-Net Signal Line Open Circuit) - Komatsu WA900-3E0 Shop Manual

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Failure code [DBL0KR] (Power ladder controller CAN-NET signal line open circuit)

Failure code [DBL0KR] (Power ladder controller CAN-NET signal line
open circuit)
Action level Failure code
E01 DBL0KR
Detail of failure Engine service monitor cannot recognize power ladder controller through CAN communication line.
q
Action of con-
(None in particular)
q
troller
Problem on
Errors and real-time monitor items related to power ladder cannot be displayed.
q
machine
If power ladder controller is not installed, "Without power ladder controller" must be selected for op-
q
tion settings of engine service monitor.
This failure code also appears when power ladder controller is not powered due to blowout of fuse
q
Related infor-
PFSE.
mation
This failure code also appears when power ladder controller is not powered due to tripped circuit
q
breaker for power ladder controller.
a If fuse blows out or circuit breaker tripps, circuit may have ground fault.
No. Cause
Open circuit in wiring harness
1 (wire breakage or defective con-
tact of connector)
40-22
Failure Open circuit in power ladder controller CAN-NET
Procedure, measuring location, criteria and remarks
1. Turn starting switch to OFF position.
2. Disconnect PC0 and EM2.
Between EM2 (female) (1) and PC0 (female) (28)
Resistance Between EM2 (female) (3) and PC0 (female) (38)
Between EM2 (female) (1) and (6)
a Open circuit in ACC signal line
1. Turn starting switch to OFF position.
2. Disconnect PC0 and PL11.
Resistance Between PL11 (female) (3) and PC0 (female) (2)
a Open circuit in ACC signal line
1. Turn starting switch to OFF position.
2. Disconnect PL11 and PD01.
Resistance Between PL11 (female) (3) and PD01 (female) (1)
a Open circuit in ACC signal line
1. Turn starting switch to OFF position.
2. Disconnect PD01 and L09.
Resistance Between L09 (male) (4) and PD01 (female) (2)
a Open circuit in ACC signal line
1. Turn starting switch to OFF position.
2. Disconnect AB4 and PL11.
a Check circuit breaker CB2 for tripping.
a Check fuse PFSE for blowout.
Resistance Between AB4 and PL11 (female) (5)
4 0 - 2 2
Max. 1 z
Max. 1 z
Max. 1 z
Max. 1 z
Max. 1 z
Max. 1 z
Max. 1 z
WA900-3E0