Table of Contents
Advertisement
DTC P0118: Engine Coolant Temperature Circuit High
Wiring Diagram
Refer to "DTC P0116: Engine Coolant Temperature Circuit Range / Performance".
DTC Detecting Condition and Trouble Area
Voltage of ECT sensor output is more than specified value with engine running.
(Low engine coolant temperature (high voltage / high resistance))
(1 driving cycle detection logic)
NOTE
When DTC P0108 and P0113 are indicated together, it is possible that "GRY/BLU" 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 this troubleshooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions for DTC Troubleshooting".
Step
1
Was "Engine and Emission Control System Check"
performed?
2
ECT sensor and its circuit check
1) Connect scan tool with ignition switch turned OFF.
2) Turn ON ignition switch.
3) Check engine coolant temp. displayed on scan tool.
°
°
Is –40
C (–40
F) indicated?
3
ECT voltage check
1) Disconnect connector from ECT sensor with ignition
switch turned OFF.
2) Check for proper connection to ECT sensor at "LT GRN"
and "GRY/BLU" wire terminals.
3) If OK, then turn ON ignition switch, measure voltage
between "LT GRN" wire terminal of ECT sensor
connector and vehicle body ground.
Is voltage about 4 – 6 V?
DTC detecting condition
Action
I5RW0A110025-01
Engine General Information and Diagnosis:
Yes
Go to Step 2.
Go to Step 3.
Go to Step 6.
1A-85
S6RW0D1104028
Trouble area
• ECT sensor circuit
• ECT sensor
• ECM
No
Go to "Engine and
Emission Control
System Check".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Go to Step 4.
Advertisement
Chapters
Table of Contents
Troubleshooting
