Suzuki SWIFT RS415 2017, Service Manual

Page: 126 / 1257

1A-78 Engine General Information and Diagnosis:
DTC P0118: Engine Coolant Temperature Circuit High
S4RS0A1104022
Wiring Diagram
DTC Detecting Condition and Trouble Area
NOTE:
When DTC P0108, P0113 and P0123 are indicated together, it is possible that “ORN” wire circuit open.
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.
DTC Troubleshooting
NOTE:
• Before performed trouble shooting, be sure to read the “Precautions of ECM Circuit Inspection: ”.
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to “Inspection of ECM and Its Circuits: ”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and
confirm that the trouble has been corrected.
C37-55
ORN ORN
3
1
2
5V
C37-24
LT GRN
E23 C37
3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53
59
60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8 3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53
59
60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8
I4RS0A110025-
1. ECT sensor
2. ECM
3. To other sensors
DTC detecting condition Trouble area
DTC will be set when all of following conditions are detected for 0.5
seconds continuously.
• Engine is running
• Voltage of ECT sensor output is more than specified value
(Low engine coolant temperature (high voltage / high resistance))
(1 driving cycle detection logic)
• ECT sensor circuit
• ECT sensor
• ECM