Failure Code [D19Jkz] Personal Code Relay Abnormality - Komatsu PC130-8 Shop Manual

SEN04120-03

Failure code [D19JKZ] Personal code relay abnormality

User code Failure code
E01 D19JKZ
Contents of
• Disconnection or short circuit was detected in personal code relay circuit.
trouble
• None in particular (when disconnection is detected).
• Turns output to personal code relay OFF (when short circuit is detected).
Action of
• If cause of failure disappears, system resets itself (when disconnection is detected).
controller
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF
(when disconnection is detected).
Problem that
appears on
machine
• This failure code is displayed only when engine lock function is effective.
Related
• Method of reproducing failure code: Turn starting switch ON (Disconnection). Trouble cannot be
information
reproduced on machine (Short circuit).
1 Defective fuse No. 3
Defective personal code
2 relay (Internal disconnection
or short circuit)
Possible causes
and standard
value in normal
Disconnection in wiring har-
state
ness (Disconnection in wiring
3
or defective contact in con-
nector)
Ground fault in wiring har-
4 ness (Short circuit with GND
circuit)
Defective machine monitor
5
(KOMTRAX section)
36
Personal code relay abnormality
Trouble
(KOMTRAX system in machine monitor)
Cause Standard value in normal state/Remarks on troubleshooting
If fuse is broken, circuit probably has ground fault (See cause 4).
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON. (Troubleshooting for
relay unit)
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting. (Troubleshooting by replace-
ment)
Replace personal code relay (R07) with another relay and perform
reproducing operation. If "E" of failure code goes off at this time,
replaced relay is defective.
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between F01 (3) – R07
(female) (1)
Wiring harness between R07 (female) (2) –
CM01 (female) (6)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between F01 (3) – R07
(female) (1) and chassis ground
Wiring harness between R07 (female) (2) –
CM01 (female) (6) and chassis ground
If causes 1 – 4 are not detected, machine monitor (KOMTRAX)
may be defective. (Since trouble is in system, troubleshooting can-
not be carried out.)
R07 (male)
Between (1) – (2)
40 Troubleshooting
1
Resistance
(300 – 600 z)
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
PC130-8