400 Troubleshooting of electrical system (E-mode)
E-13 Automatic warm-up system does not operate (in cold season)
40-400 32 PC200, 200LC, 220, 220LC-8M0
SEN06138-00
E-13 Automatic warm-up system does not operate (in cold season)
Engine coolant temperature gauge and engine
coolant temperature monitor
Failure q Automatic warm-up system does not operate (in cold weather)
Related information
q Automatic warm-up function increases engine speed to 1,200 rpm when engine coolant tem-
perature is below 30 °C.
q 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.
q 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.
q 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.
Cause Procedure, measuring location, criteria and remarks
1
Defective engine coolant tempera-
ture signal system
a Turn starting switch to ON position or start engine and perform trouble-
shooting.
Monitoring code
Engine coolant tempera-
ture
Coolant temperature
gauge level
04107
Engine coolant tempera-
ture
105 °C 6 (a: Red)
102 °C 5 (a: Red)
100 °C 4 (a: Blue)
85 °C 3 (a: Blue)
60 °C 2 (a: Blue)
30 °C 1 (a: White)
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".
2 Defective engine controller
If no failure is found by cause 1, engine controller is defective. (Since this is an
internal defect, troubleshooting cannot be performed.)
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