Failure Code [D19Jkz] Personal Code Relay Abnormality - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02630-05

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 infor-
• Method of reproducing failure code: Turn starting switch ON (Disconnection). Trouble cannot be
mation
reproduced on machine (Short circuit).
1 Defective F01 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)
58
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 troubleshooting
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 replacement)
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 troubleshooting
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 troubleshooting
without turning starting switch ON.
Wiring harness between F01 (3) – 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 cannot 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
PC300, 350-8