Automatic Warm-Up System Does Not Operate (In Cold Season) - Komatsu PC200-8M0 Shop Manual

SEN06138-00
E-13 Automatic warm-up system does not operate (in cold season)
q
Failure
q
q
q
Related information
q
Cause
Defective engine coolant tempera-
1
ture signal system
2 Defective engine controller
Engine coolant temperature gauge and engine
coolant temperature monitor
32
40-400
Automatic warm-up system does not operate (in cold weather)
Automatic warm-up function increases engine speed to 1,200 rpm when engine coolant tem-
perature is below 30 °C.
With starting switch at ON position or after engine is started, if fuel control dial is kept at 70%
throttle position or higher for 3 seconds, automatic warm-up operation is canceled.
If machine is equipped with air conditioner, when blower is turned on, ambient temperature is
below 5 °C and engine coolant temperature is below 55 °C, automatic warm-up function in-
creases engine speed to 1,300 rpm. If engine coolant temperature reaches 60 °C, automatic
warm-up function is canceled.
If engine coolant temperature is below 10 °C, turbocharger protection function works to keep
engine speed below 1,000 rpm for up to 5 seconds after engine is started.
a Turn starting switch to ON position or start engine and perform trouble-
shooting.
Monitoring code
04107
Engine coolant tempera-
ture
If engine coolant temperature does not match with coolant temperature gauge
level, perform troubleshooting for "E-8 Engine coolant temperature gauge
does not indiate properly".
If no failure is found by cause 1, engine controller is defective. (Since this is an
internal defect, troubleshooting cannot be performed.)
400 Troubleshooting of electrical system (E-mode)
E-13 Automatic warm-up system does not operate (in cold season)
Procedure, measuring location, criteria and remarks
Engine coolant tempera-
ture
105 °C
102 °C
100 °C
85 °C
60 °C
30 °C
Coolant temperature
gauge level
6 (a: Red)
5 (a: Red)
4 (a: Blue)
3 (a: Blue)
2 (a: Blue)
1 (a: White)
PC200, 200LC, 220, 220LC-8M0