LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 40 (Engine Control System (DTC/Circuit Diagnosis) (VQ35DE) (Except Hybrid) (1 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0117, P0118: ECT Sensor >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

  1. CHECK ECT SENSOR POWER SUPPLY

    1. Disconnect engine coolant temperature (ECT) sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between ECT sensor harness connector and ground.
      ECT sensor Ground Voltage
      Connector Terminal
      F61 1 Ground Approx. 5 V

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair open circuit, short to ground or short to power in harness or connectors.

  2. CHECK ECT SENSOR GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between ECT sensor harness connector and ECM harness connector.
      ECT sensor ECM Continuity
      Connector Terminal Connector Terminal
      F61 2 F78 15 Existed
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair open circuit, short to ground or short to power in harness or connectors.

  3. CHECK ENGINE COOLANT TEMPERATURE SENSOR

    Check engine coolant temperature sensor. Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    Check intermittent incident. Refer to INTERMITTENT INCIDENT .

    NO 

    Replace engine coolant temperature sensor. Refer to EXPLODED VIEW .

scientia non olet · About LEMON Manuals