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SEN02632-02
E-11 Engine coolant temperature gauge does not indicate normally
• While engine coolant temperature is rising normally, temperature gauge does not rise from white
Trouble
range (C).
• While engine coolant temperature is stabilized normally, temperature gauge rises to red range (H).
• Input from the engine coolant temperature sensor (temperature) can be checked with monitoring
Related infor-
function. (Code: 04105: Engine coolant temperature)
mation
• Check if failure code for abnormal communication (machine monitor) system [DAFRMC] is indicated
(if yes, diagnose that failure first.)
Defective coolant tempera-
ture sensor
1
(Internal disconnection or
short circuit)
Disconnection in wiring har-
ness
2
(Disconnection in wiring or
defective contact in connec-
Possible causes
tor)
and standard
value in normal
state
Ground fault in wiring har-
ness
3
(Short circuit with GND cir-
cuit)
Hot short (Short circuit with
4
24V circuit) in wiring harness
5 Defective engine controller
24
Cause
Standard value in normal state/Remarks on troubleshooting
a
Between (B) – (A)
Between (B) – chas-
a
Wiring harness between CE01 (female) (15)
– C5 (female) (B)
Wiring harness between C5 (female) (A) –
chassis ground
a
Wiring harness between CE01 (female) (15)
– C5 (female) (B) and chassis ground
a
Wiring harness between CE01 (female) (15)
– C5 (female) (B) and chassis ground
a
CE01 (female)
Between (15) – chas-
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Engine coolant tem-
C5 (male)
perature
All range
sis ground
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Engine coolant tem-
perature
sis ground
40 Troubleshooting
Resistance
0°C
30 – 37 kz
25°C
9.3 – 10.7 kz
50°C
3.2 – 3.8 kz
80°C
1.0 – 1.3 kz
700 – 800 z
95°C
Min. 1 Mz
Resis-
tance
Resis-
tance
Resis-
tance
Voltage
Resistance
0°C
30 – 37 kz
25°C
9.3 – 10.7 kz
50°C
3.2 – 3.8 kz
80°C
1.0 – 1.3 kz
700 – 800 z
95°C
PC300, 350-8
1
Max. 1 z
Max. 1 z
Min. 1 Mz
Max. 1 V
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Table of Contents
Troubleshooting
