| DTC P0116 | Engine coolant temperature (ECT) sensor range/performance problem |
|---|---|
|
DETECTION CONDITION
|
• Minimum engine coolant temperature rise is not achieved within the specified time limit from when the engine was started.
|
|
POSSIBLE CAUSE
|
• ECT sensor malfunction
• Thermostat malfunction
• Connector or terminal malfunction
• PCM malfunction
|
Diagnostic procedure
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
|
1
|
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA been recorded?
|
Yes
|
Go to the next step.
|
|
No
|
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
|
||
|
2
|
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
|
Yes
|
Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
|
|
No
|
Go to the next step.
|
||
|
3
|
VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT?
• Connect the M-MDS to the DLC-2.
• Clear the DTC from the PCM memory using the M-MDS.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
|
Yes
|
Go to the next step.
|
|
No
|
Intermittent concern exists.
Perform the “INTERMITTENT CONCERNS TROUBLESHOOTING”.
|
||
|
4
|
INSPECT ECT SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the ECT sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the terminal, then go to Step 7.
|
|
No
|
Go to the next step.
|
||
|
5
|
INSPECT ECT SENSOR
• Inspect the ECT sensor.
• Is there any malfunction?
|
Yes
|
Replace the ECT sensor, then go to Step 7.
|
|
No
|
Go to the next step.
|
||
|
6
|
INSPECT THERMOSTAT
• Prepare a new ECT sensor.
• Clear the DTC from the PCM memory using the M-MDS.
• Connect the ECT sensor connector to the new ECT sensor without installing to the engine.
• Replace the malfunctioning ECT sensor with new one.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
|
Yes
|
Go to the next step.
|
|
No
|
Inspect the thermostat.
• If the thermostat is normal, go to the next step.
• If the thermostat is not normal, replace thermostat, then go to the next step
|
||
|
7
|
VERIFY THAT DTC P0116 TROUBLESHOOTING IS COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Is the same DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
8
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the after repair procedure.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
DTC troubleshooting completed.
|
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