SEN03845-00
40-350 32 WA250, 250PZ-6
350 Troubleshooting by failure code (Display of code), Part 5
Failure code [DDK6KA] FNR lever: Disconnection/Ground fault
Failure code [DDK6KA] FNR lever: Disconnection/Ground fault
Action code Failure code
Trouble
FNR lever: Disconnection/Ground fault
(HST controller system)
E03 DDK6KA
Contents of
trouble
• No signal of FNR (directional) lever is input because of disconnection or ground fault in FNR (direc-
tional) lever switch signal system.
Action of
controller
• If directional selector switch is not installed, gear is set in neutral.
• If directional selector switch actuation switch is turned OFF, gear is set in neutral (Only machine with
directional selector switch actuation switch).
• If directional selector switch actuation switch is turned ON, FNR (directional) lever switch controls on
assumption that gear is in neutral (Only machine with directional selector switch actuation switch).
• Turns the centralized warning lamp and alarm buzzer ON.
• Even if trouble disappears, system does not reset itself until FNR (directional) lever is set in N (Neu-
tral).
Problem that
appears on
machine
• Machine cannot be driven with FNR (directional) lever.
• Machine can be driven with directional selector switch (only machine with directional selector switch
actuation switch).
• Gear shift lever position lamp goes off.
Related
information
• The input state (ON/OFF) from the FNR (directional) lever switch can be checked with the monitoring
function (Code: HST – 40977 – D-IN-0, D-IN-1 or D-IN-2).
• Method of reproducing failure code: Turn the starting switch ON and operate FNR (directional) lever
Possible causes
and standard
value in normal
state
Causes Standard value in normal state/Remarks on troubleshooting
1
Defective fuse No. 3 of fuse
box (FS1)
If the fuse is burn, the circuit probably has a grounding fault, etc.
(See cause 5.)
2
Defective FNR (directional)
lever switch (Internal discon-
nection or short circuit)
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
L15
FNR (directional)
lever
Voltage
Between (1) and
ground
Constant 20 – 30 V
Between (3) and
ground
N (Neutral) 20 – 30 V
Other than above Max. 1 V
Between (2) and
ground
F (Forward) 20 – 30 V
Other than above Max. 1 V
Between (4) and
ground
R (Reverse) 20 – 30 V
Other than above Max. 1 V
3
Defective VIS power supply
holding relay (Internal defect)
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Replace VIS power
supply holding relay
(L102) with another
relay
Condition becomes
normal
Relay (L102) is
defective
Condition does not
become normal
Relay (L102) is
normal
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Between L102 (male) (1) – (2)
Resis-
tance
200 –
400 z
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