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1A-41 Engine General Information and Diagnosis:
DTC "C15" (P0115-H/L): ECT Sensor Circuit Malfunction
Detected Condition and Possible Cause
Detected Condition
Output voltage is not with in the following
range.
C15
0.1 V ≤ Sensor voltage ≤ 4.85 V
Sensor voltage is higher than specified
H
value.
P0115
Sensor voltage is lower than specified
L
value.
Wiring Diagram
ECT sensor
Troubleshooting
CAUTION
!
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with a
needle pointed tester probe to prevent terminal damage.
NOTE
After repairing the trouble, clear the DTC using SDS tool. Refer to "Use of SDS Diagnosis Reset
Procedures (Page 1A-13)".
ECM coupler (Harness side)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Possible Cause
• ECT sensor circuit open or short.
• ECT sensor malfunction.
• ECM malfunction.
• ECT sensor circuit is open or ground circuit open.
• ECT sensor circuit shorted to ground.
B/BI
B/Br
16
17
35
36
37
38
39
40
33
34
44
45
46
47
48
49
B940H21104013
ECM
ECTS
19
12
E2
I940H1110029-01
41
42
43
50
51
52
I940H1110012-03
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