DTC P0116 Engine Coolant Temperature Sensor 1 Circuit Range/Performance: Notes
WARNING: This page is about a different variant/trim than selected.
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
Trouble symptom:
- Hard to start
- Improper idling
- Poor driving performance
CAUTION:
- After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Clear Memory Mode . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Inspection Mode .
- Use the check board when measuring the ECM terminal voltage and resistance.
Wiring diagram:
Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM .
- CHECK FOR ANY OTHER DTC ON DISPLAY.
Is any other DTC displayed?
- Yes: Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DO)>List of Diagnostic Trouble Code (DTC) .
- No: Go to 2.
- CHECK ENGINE COOLANT TEMPERATURE SENSOR.
- Disconnect the connectors from the engine coolant temperature sensor.
- Measure the resistance between engine coolant temperature sensor terminals when the engine coolant is cold and after warmed up.
Terminals
No. 1 -No. 2:
Is the resistance of engine coolant temperature sensor different between when engine coolant is cold and after warmed up?
- Yes: Repair the poor contact of ECM connector.
- No: Replace the engine coolant temperature sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Engine Coolant Temperature Sensor .