LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0153 >> DTC P0116: ECT Sensor >> Component Function Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Function Check

  1. CHECK ENGINE COOLANT TEMPERATURE (ECT) SENSOR
    1. Turn ignition switch OFF.
    2. Disconnect ECT sensor harness connector.
    3. Remove ECT sensor. Refer to "COMPONENT PARTS LOCATION ".
    4. Check resistance between ECT sensor terminals by heating with hot water as shown in the figure.
    Terminals Condition Resistance (kΩ)
    1 and 2 Temperature [°C (°F)] 20 (68) 2.35 - 2.73
    50 (122) 0.68 - 1.00
    90 (194) 0.236 - 0.260

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Proceed to "DIAGNOSIS PROCEDURE ".

    Fig 1: Checking Engine Coolant Temperature Sensor
    G08260183Courtesy of NISSAN NORTH AMERICA, INC.
  2. CHECK INTERMITTENT INCIDENT

    Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Proceed to "DIAGNOSIS PROCEDURE ".