Failure Code [D19Jkz] Personal Code Relay Abnormality - Komatsu Galeo PC138US-8 Shop Manual

SEN02464-01

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. 20
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)
34
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-
a Prepare with starting switch OFF, then turn starting switch ON
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-
Wiring harness between F01 (20) – R07
(female) (1)
Wiring harness between R07 (female) (2) –
CM01 (female) (6)
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between F01 (20) – R07
(female) (1)
Wiring harness between R07 (female) (2) –
CM01 (female) (6)
If causes 1 – 4 are not detected, machine monitor (KOMTRAX)
may be defective. (Since trouble is in system, troubleshooting can-
not be carried out.)
ing without turning starting switch ON. (Troubleshooting for
relay unit)
R07 (male)
Between (1) – (2)
and carry out troubleshooting. (Troubleshooting by replace-
ment)
ing without turning starting switch ON.
ing without turning starting switch ON.
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
PC138US, USLC-8