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DTC Diagnosis Procedure
1.CHECK ENGINE OIL TEMPERATURE SENSOR POWER SUPPLY
  1. Turn ignition switch OFF.
  2. Disconnect engine oil temperature (EOT) sensor harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between EOT sensor harness connector and ground.
    +−Voltage
    (Approx.)
    EOT sensor
    ConnectorTerminal
    F681Ground5 V
Is the inspection result normal?
.
.
 
2.CHECK ENGINE OIL TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between EOT sensor harness connector and ECM harness connector.
    +−Continuity
    EOT sensorECM
    ConnectorTerminalConnectorTerminal
    F681F5295Existed
  4. Also check harness for short to ground.
Is the inspection result normal?
Perform the trouble diagnosis for power supply circuit.
Repair or replace error-detected parts.
 
3.CHECK EOT SENSOR GROUND CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between EOT sensor harness connector and ECM harness connector.
    +−
    Continuity
    EOT sensorECM
    ConnectorTerminalConnectorTerminal
    F682F52107Existed
  4. Also check harness for short to power.
Is the inspection result normal?
.
Repair or replace error-detected parts.
 
4.CHECK ENGINE OIL TEMPERATURE SENSOR
Check the engine oil temperature sensor. Refer to Component Inspection.
Is the inspection result normal?
Check intermittent incident. Refer to Intermittent IncidentIntermittent Incident.
Replace engine oil temperature sensor. Refer to Component Parts Location.