DTC P1116: ECT Sensor 1 Circuit Range/Performance Problem
NOTE:
- Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .
- If DTC P0111 is stored at the same time as DTC P1116, troubleshoot DTC P0111 first, then recheck for DTC P1116.
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P1116 ECT Sensor 1 Circuit Range/Performance Problem |
DTC (PGM-FI)
- 1. Connector visual check:
- 1. Check for poor connections or loose terminals at these parts:
- ECT sensor 1
- ECT sensor 2
Are the connections and terminals OK?
YES
The parts are OK. Go to step 2.
NO
Repair the connections or terminals.
- 2. PGM-FI system check:
- 1. Turn the vehicle to the ON mode.
- 2. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC Freeze Frame P1116 ECT Sensor 1 Circuit Range/Performance Problem P2183 ECT Sensor 2 Circuit Range/Performance Problem Are DTC P1116 and P2183 indicated at the same time?
YES
Go to step 5.
NO
Only DTC P1116 is indicated. Go to step 3
- 3. ECT sensor 1 performance check:
- 1. Start the engine, and let it idle for 10 minutes.
- 2. Check the parameter(s) below with the HDS.
Signal Malfunction Threshold Current conditions Values Unit Values Unit ECT SENSOR 1 Less than 107 °F Do the current condition(s) match the malfunction threshold?
YES
Replace ECT sensor 1 - Refer to: ECT Sensor 1 Removal and InstallationECT Sensor 2 Removal and Installation .
NO
Go to step 4.
- 4. Problem verification:
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Allow ECT sensor 1 to cool to the ambient temperature.
- 3. Note the ambient temperature.
- 4. Turn the vehicle to the ON mode.
- 5. Note the value of the ECT SENSOR 1 in the DATA LIST with the HDS.
Signal Current conditions Values Unit ECT SENSOR 1 - 6. Compare the value of ECT SENSOR 1 with the ambient temperature.
Does the value of ECT SENSOR 1 differ 5.4°F (3°C) or more from the ambient temperature?
YES
Replace ECT sensor 1 - Refer to: ECT Sensor 1 Removal and InstallationECT Sensor 2 Removal and Installation .
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
- 5. ECT sensor 1 performance check:
- 1. Start the engine, and let it idle for 10 minutes.
- 2. Check the parameter(s) below with the HDS.
Signal Malfunction Threshold Current conditions Values Unit Values Unit ECT SENSOR 1 Less than 107 °F Do the current condition(s) match the malfunction threshold?
YES
Replace ECT sensor 1 - Refer to: ECT Sensor 1 Removal and InstallationECT Sensor 2 Removal and Installation .
NO
Go to step 6.
- 6. ECT sensor 2 performance check:
- 1. Let the engine idle for 10 minutes.
- 2. Check the parameter(s) below with the HDS.
Signal Malfunction Threshold Current conditions Values Unit Values Unit ECT SENSOR 2 Less than 107 °F Do the current condition(s) match the malfunction threshold?
YES
Replace ECT sensor 2 - Refer to: ECT Sensor 1 Removal and InstallationECT Sensor 2 Removal and Installation .
NO
Go to step 7.
- 7. Problem verification:
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Allow the sensors to cool to the ambient temperature.
- 3. Note the ambient temperature.
- 4. Turn the vehicle to the ON mode.
- 5. Note the value of the ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.
Signal Current conditions Values Unit ECT SENSOR 1 ECT SENSOR 2 - 6. Compare the value of ECT sensor 1 and the value of ECT SENSOR 2 with the ambient temperature individually.
Does either sensor differ more than 5.4°F (3°C) from the ambient temperature?
YES
Replace the sensor that differed more than 5.4°F (3°C) from the ambient temperature.
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.