DTC P0116
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P0116: Engine Coolant Temperature Sensor 1 Circuit Range / Performance Difference between measured ECT and estimated ECT is more than specified value for specified time with engine running. (3 D/C detection logic) |
•ECT sensor and/or its circuit
•Thermostat •Cooling system •ECM |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | A2: | ECT sensor ground circuit | 2. | ECM |
| A1: | ECT sensor signal circuit | 1. | ECT sensor |
DTC Confirmation Procedure
NOTE:
Check that the following DTC is not detected in this “DTC Confirmation Procedure”.
•ECT sensor (P0118)
1)Warm up engine to normal operating temperature.
2)Run engine at idle speed for 5 min.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Coolant level check
1)Check coolant level.
Is check result OK?
|
Go to Step 3.
|
Add coolant and recheck DTC.
|
| 3 |
ECT sensor circuit check
1)Check ECT sensor circuits according to Step 2 under DTC P0117 / P0118:M16A.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective wire harness.
|
| 4 |
ECT sensor check
1)Check ECT sensor.
Is check result OK?
|
Go to Step 5.
|
Replace ECT sensor.
|
| 5 |
Thermostat check
1)Check thermostat.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace thermostat.
|