Failure Code [Dafqkr] Can2 Discon - Komatsu PC200-8M0 Shop Manual

SEN06135-00

Failure code [DAFQKR] CAN2 Discon

Action
Failure code
level
– DAFQKR
q
Detail of failure KOMTRAX terminal does not recognize machine monitor through CAN communication 2 line.
Action of con-
troller
Problem on
q
KOMTRAX system may not function normally.
machine
q
Method of reproducing failure code: Turn starting switch to ON position.
q
Start of CAN communication is notified to each controller by ACC signal from starting switch.
q
Failure code is transmitted to and displayed on machine monitor by CAN communication. Accord-
ingly, if CAN communication with machine monitor fails, failure code [DAFQKR] is not displayed on
Related infor-
machine monitor and it can be observed only through KOMTRAX system.
mation
q
Since each controller and machine monitor are connected to continuous power supply, they receive
continuous power even while starting switch is at OFF position.
q
Since active CAN communication line signal is pulse voltage, it cannot be measured by using mul-
timeter.
Cause
Defective power supply to
1
machine monitor
2 Defective CAN communication
32
40-303
CAN 2 Disconnection
Failure
(Detected by KOMTRAX terminal) (KOMTRAX system)
Procedure, measuring location, criteria and remarks
Perform troubleshooting for "E-5" in E mode troubleshooting.
Perform checks on cause 5 and up in troubleshooting for failure code
[DB2QKR].
303 Troubleshooting by failure code, Part 3
Failure code [DAFQKR] CAN2 Discon
PC200, 200LC, 220, 220LC-8M0