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. (1 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 | 3. | To boost pressure sensor with IAT sensor-2 |
DTC Confirmation Procedure
NOTE:
Check that the following DTCs are not detected in this “DTC Confirmation Procedure”.
•MAF sensor (P0102 and P0103)
•MAP sensor (P0107 and P0108)
•ECT sensor (P0116, P0117 and P0118)
•MAP sensor (P0107 and P0108)
•ECT sensor (P0116, P0117 and 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:K14C.
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.
|