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6-82 ENGINE GENERAL INFORMATION AND DIAGNOSIS
DTC P0118 Engine Coolant Temperature Circuit High
WIRING DIAGRAM
C64
7
6
5
4
17
16
15
14
13
12
27
26
25
24
23
22
34
33
32
1. ECT sensor
2. ECM
3. To other sensors
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
DTC will be set when all of the following conditions are
detected for 5 seconds continuously.
• Engine is running
• Voltage of ECT sensor output is more than the specified
value
(Low engine coolant temperature (high voltage/high resis-
tance))
DTC CONFIRMATION PROCEDURE
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and run it for 10 sec. or more.
4) Check DTC and pending DTC.
1
LT GRN
ORN
3
C63
3
2
1
7
6
5
4
3
11
10
9
8
19
18
17
16
15
14
13
12
21
20
19
18
27
26
25
24
31
30
29
28
35
34
33
32
C63-16
C63-28
ORN
G91
2
1
6
5
4
3
11
10
9
8
16
15
14
13
12
11
10
9
23
22
21
20
27
26
25
24
23
22
21
20
31
30
29
28
35
34
33
32
31
• ECT sensor circuit
• ECT sensor
• ECM
2
2
1
7
8
19
18
17
30
29
28
TROUBLE AREA
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