Failure Code [D192Ky] Ecss Solenoid Relay: Hot Short - Komatsu WA250-6 Shop Manual

SEN03844-00

Failure code [D192KY] ECSS solenoid relay: Hot short

Action code Failure code
E01 D192KY
Contents of
• Since there is hot short in ECSS solenoid relay output system, ECSS solenoid relay does not oper-
trouble
ate.
• Turns output to ECSS solenoid relay OFF.
Action of
• If hot short occurs while backup alarm/lamp is in operation, output is turned OFF.
machine monitor
• If hot short occurs while alarm buzzer is in operation, output is turned OFF.
• ECSS does not operate.
Problem that
appears on
• Backup alarm/lamp may not sound.
machine
• Alarm buzzer may not operate.
• Output state (ON/OFF) to ECSS solenoid relay can be checked with monitoring function.
(Monitoring code: MONITOR PANEL – 40952 – D-OUT-3)
• Operating condition of backup alarm/lamp can be checked with monitoring function.
(Monitoring code: MONITOR PANEL – 40952 – D-OUT-2)
Related
information
• Operating condition of alarm buzzer can be checked with monitoring function.
(Monitoring code: MONITOR PANEL – 40952 – D-OUT-0)
• This fault is not detected if ECSS is not installed.
• Method of reproducing failure code: Travel at speed higher than 5 km/h.
Defective ECSS solenoid
1
relay (L110) (Internal defect)
Possible causes
and standard
value in normal
state
Hot short (Contact with 24V
2
circuit) in wiring harness
3 Defective machine monitor
4
40-340
ECSS solenoid relay: Hot short
Trouble
(Machine monitor system)
Causes
a Prepare with starting switch OFF, then start engine and carry out
troubleshooting.
Replace ECSS sole-
noid relay (L110) with
another relay.
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Between L110 (male) (1) – (2)
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Between wiring harness L24 (female) (11) –
L110 (female) (2) and ground
If causes 1 and 2 are not detected, machine monitor may be defec-
tive. (Since trouble is in system, troubleshooting cannot be carried
out.)
340 Troubleshooting by failure code (Display of code), Part 4
Failure code [D192KY] ECSS solenoid relay: Hot short
Standard value in normal state/Remarks on troubleshooting
Condition becomes
normal.
Condition does not
become normal.
Relay (L110) is
defective.
Relay (L110) is
normal.
Resis- 200 – 400
tance z
Voltage Max. 1 V
WA250, 250PZ-6