DTC P0117 / P0118
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P0117: Engine Coolant Temperature Sensor 1 Circuit Low Output voltage of ECT sensor signal circuit is lower than 0.52 V for 5 sec. (3 D/C detection logic) |
•ECT sensor and/or its circuit
•ECM |
|
P0118: Engine Coolant Temperature Sensor 1 Circuit High Output voltage of ECT sensor signal circuit is higher than 4.92 V for 5 sec. (3 D/C detection logic) |
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
P0117
1)Set ignition “ON” for 10 sec.
P0118
NOTE:
Check that the following DTCs are not detected in this “DTC Confirmation Procedure”.
•IAT sensor (P0112 and P0113)
1)Set ignition “ON” for 10 sec.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
ECT sensor signal circuit and ground circuit check
1)With ignition “OFF”, disconnect “C01” and “E01” connectors of ECM and ECT sensor connector.
2)Check for proper terminal connection to “C01” and “E01” connectors and ECT sensor connector.
3)If connections are OK, check the following points.
•Resistance of “A1” and “A2” circuits: less than 1 Ω
•Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between “A1” circuit terminal and “A2” circuit terminal at ECT sensor connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
ECT sensor check
1)Check ECT sensor.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace ECT sensor.
|