DTC P0116:00 [SKYACTIV-G 2.0]

DTC P0116:00	ECT sensor circuit range/performance problem
DETECTION CONDITION	• The PCM monitors the maximum value and minimum value of engine coolant temperature when the engine is started and 5 min have been passed after leaving the vehicle 6 h or more. If difference between maximum and minimum values of engine coolant temperature is below 6 °C {11 °F} the PCM determines that there is an ECT sensor circuit range/performance problem. Diagnostic support note • This is a continuous monitor (engine cooling system). • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	—
POSSIBLE CAUSE	• ECT sensor connector or terminals malfunction • PCM connector or terminals malfunction • ECT sensor malfunction • Thermostat malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	—

DTC P0116:00

ECT sensor circuit range/performance problem

DETECTION CONDITION

• The PCM monitors the maximum value and minimum value of engine coolant temperature when the engine is started and 5 min have been passed after leaving the vehicle 6 h or more. If difference between maximum and minimum values of engine coolant temperature is below 6 °C {11 °F} the PCM determines that there is an ECT sensor circuit range/performance problem.

Diagnostic support note

• This is a continuous monitor (engine cooling system).

• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

• The DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

—

POSSIBLE CAUSE

• ECT sensor connector or terminals malfunction

• PCM connector or terminals malfunction

• ECT sensor malfunction

• Thermostat malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

—

STEP	INSPECTION	ACTION
1	IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2) • Perform the Freeze Frame PID Data Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0].) • Is the DTC P0116:00 on FREEZE FRAME DATA (Mode 2)?	Yes	Go to the next step.
No	Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA (Mode 2). (See DTC TABLE [SKYACTIV-G 2.0].)
2	VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED • Have the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (engine cooling system related) been recorded?	Yes	Go to the next step.
No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
3	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No	Go to the next step.
4	INSPECT ECT SENSOR CONNECTOR CONDITION • Switch the ignition to 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 connector and/or terminals, then go to Step 9.
No	Go to the next step.
5	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 9.
No	Go to the next step.
6	INSPECT ECT SENSOR • Inspect the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0].) • Is there any malfunction?	Yes	Replace the ECT sensor, then go to Step 9. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
No	Go to the next step.
7	COMPARE ECT PID VALUE • Prepare a new ECT sensor. • Connect the ECT sensor connector to the new one without installing to the engine. • Switch the ignition to ON and record the ECT PID value. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0].) • Switch the ignition to off. • Replace the malfunction ECT sensor with new one. • Start the engine and wait for 5 min. • Record the ECT PID value. • Is the difference between each ECT PID values more than 6 °C {11 °F}?	Yes	Go to the next step.
No	Go to Step 9.
8	INSPECT THERMOSTAT • Switch the ignition to off. • Inspect the thermostat. (See THERMOSTAT INSPECTION [SKYACTIV-G 2.0].) • Is there any malfunction?	Yes	Replace the thermostat, then go to the next step. (See THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
No	Go to the next step.
9	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.0].) • Switch the ignition to off. • Start the engine and warm it up completely. • Perform the DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) Go to the next step.
No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.0].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0].)
No	DTC troubleshooting completed.

STEP

INSPECTION

ACTION

IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2)

• Perform the Freeze Frame PID Data Access Procedure.

(See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0].)

• Is the DTC P0116:00 on FREEZE FRAME DATA (Mode 2)?

Yes

Go to the next step.

Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA (Mode 2).

(See DTC TABLE [SKYACTIV-G 2.0].)

VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED

• Have the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (engine cooling system related) been recorded?

Yes

Go to the next step.

Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.

VERIFY RELATED SERVICE INFORMATION AVAILABILITY

• Verify related Service Information availability.

• Is any related Service Information available?

Yes

Perform repair or diagnosis according to the available Service Information.

• If the vehicle is not repaired, go to the next step.

Go to the next step.

INSPECT ECT SENSOR CONNECTOR CONDITION

• Switch the ignition to 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 connector and/or terminals, then go to Step 9.

Go to the next step.

INSPECT PCM CONNECTOR CONDITION

• Disconnect the PCM connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 9.

Go to the next step.

INSPECT ECT SENSOR

• Inspect the ECT sensor.

(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0].)

• Is there any malfunction?

Yes

Replace the ECT sensor, then go to Step 9.

(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

Go to the next step.

COMPARE ECT PID VALUE

• Prepare a new ECT sensor.

• Connect the ECT sensor connector to the new one without installing to the engine.

• Switch the ignition to ON and record the ECT PID value.

(See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0].)

• Switch the ignition to off.

• Replace the malfunction ECT sensor with new one.

• Start the engine and wait for 5 min.

• Record the ECT PID value.

• Is the difference between each ECT PID values more than 6 °C {11 °F}?

Yes

Go to the next step.

Go to Step 9.

INSPECT THERMOSTAT

• Switch the ignition to off.

• Inspect the thermostat.

(See THERMOSTAT INSPECTION [SKYACTIV-G 2.0].)

• Is there any malfunction?

Yes

Replace the thermostat, then go to the next step.

(See THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

Go to the next step.

VERIFY DTC TROUBLESHOOTING COMPLETED

• Make sure to reconnect all disconnected connectors.

• Clear the DTC from the PCM memory using the M-MDS.

(See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.0].)

• Switch the ignition to off.

• Start the engine and warm it up completely.

• Perform the DTC Reading Procedure.

(See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0].)

• Is the same DTC present?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the PCM.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

Go to the next step.

VERIFY AFTER REPAIR PROCEDURE

• Perform the “AFTER REPAIR PROCEDURE”.

(See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.0].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [SKYACTIV-G 2.0].)

DTC troubleshooting completed.