Failure Code [D19Jkz] Personal Code Relay Open Or Short - Komatsu PC88MR-10 Shop Manual

40 Troubleshooting
Troubleshooting by failure code (Display of code)

Failure code [D19JKZ] Personal Code Relay Open or Short

A)
Action level Failure code
L03 D19JKZ
Detail of
Open error or short circuit occurs in primary (coil) circuit of personal code relay.
failure
None in particular (when open error occurred)
Stops driving personal code relay (when short circuit occurred).
Action of
If cause of failure disappears, machine becomes normal by itself (when open error
machine
occurred).
monitor
Even if cause of failure disappears, machine does not become normal until starting switch
is turned to OFF position (when short circuit occurred).
Problem on
machine
This failure code is displayed only when engine lock function is enabled.
Method of reproducing failure code: Turn starting switch to ON position (when open circuit
occurred). Failure code cannot be reproduced on the machine (when short circuit
Related
occurred).
information
Troubleshooting for this failure code covers circuits from fuse No. 3 in fuse box F01
through primary (coil) circuit of personal code relay R07 to machine monitor.
No. Cause
Blown No. 3 fuse of
1
fuse box F01
Defective personal
2
code relay R07
Open circuit, short
circuit, or ground fault in
3
wiring harness
Open circuit in wiring
4
harness
40-248
Personal Code Relay Open or Short
Failure
(Machine monitor system)
Procedure, measuring location, criteria, and remarks
If fuse is blown, circuit may have ground fault.
1. Turn starting switch to OFF position.
2. Disconnect relay R07, and connect T-adapter to male side.
Resistance Between R07 (male) (1) and (2)
1. Turn starting switch to OFF position.
2. Replace relay R07 with light relay R05.
3. Turn starting switch to ON position.
If this failure code disappears, original personal code relay R07 is defective.
1. Turn starting switch to OFF position.
2. Remove fuse No. 3 in fuse box F01.
3. Disconnect connectors CM01 and S14, and connect T-adapter to female
side of CM01.
Between F01-3 and CM01 (female) (6)
Resistance
Between F01-3 or CM01 (female) (6) and ground
a If no failure is found by check on cause 3, this check is not required.
1. Turn starting switch to OFF position.
2. Remove fuse No. 3 in fuse box F01.
3. Disconnect connector CM01 and relay R07, and connect T-adapters to
each female side.
Between F01-3 and R07 (female) (1)
Resistance
Between R07 (female) (2) and CM01 (female) (6)
(PC88MR-D19JKZ-400-A-Z0-
200 to 600
z
200 to 600
z
Min. 1 Mz
Max. 1 z
Max. 1 z
PC88MR-10