Failure Code [Dafqkr] Can 2 Defective Communication (Monitor) - Komatsu PC88MR-10 Shop Manual

Failure code [DAFQKR] CAN 2 Defective Communication (Monitor)

DAFQKR-400-A-Z0-A)
Action code Failure code
-
DAFQKR
Detail of KOMTRAX terminal does not recognize machine monitor through CAN communication 2
failure line.
Action of
controller
Problem on
System may not function normally.
machine
Method of reproducing failure code: Turn starting switch to ON position.
Start of CAN communication is recognized by each controller when ACC signal of starting
switch is received.
Failure code is transmitted to and displayed on machine monitor by CAN communication.
Accordingly, if CAN communication with machine monitor fails, failure code [DAFQKR] is
Related
not displayed on machine monitor and it can be observed only through KOMTRAX
information
system.
Since each controller and machine monitor are connected directly to battery, they are
supplied with power even after starting switch is turned to OFF position.
Since signal of active CAN communication line is pulse voltage, it cannot be measured by
using multimeter.
No. Cause
Defective power supply
1
to machine monitor
Defective CAN
2
communication
PC88MR-10
CAN 2 Defective Communication (Monitor)
Failure
(KOMTRAX system)
Procedure, measuring location, criteria, and remarks
Perform troubleshooting for "E-4" in E mode troubleshooting.
Perform checks on causes 4 and after in troubleshooting for failure code
[DB2QKR]
40 Troubleshooting
Troubleshooting by failure code (Display of code)
(PC88MR-
40-279