Nissan Maxima Service and Repair Manual: P0197, P0198 EOT sensor

Description

Nissan Maxima. Description

The engine oil temperature sensor is used to detect the engine oil temperature. The sensor modifies a voltage signal from the ECM.

The modified signal returns to the ECM as the engine oil temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

<Reference data>

Nissan Maxima. eference data

Nissan Maxima. eference data

*: These data are reference values and are measured between ECM terminals 54 (Engine oil temperature sensor) and 52 (Sensor ground).

DTC Logic

DTC DETECTION LOGIC

Nissan Maxima. DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine and wait at least 5 seconds.
  2. Check 1st trip DTC.

Diagnosis Procedure

1.CHECK GROUND CONNECTION

  1. Turn ignition switch OFF.
  2. . Check ground connection E9.

2.CHECK EOT SENSOR POWER SUPPLY CIRCUIT

Nissan Maxima. CHECK EOT SENSOR POWER SUPPLY CIRCUIT

  1. Disconnect engine oil temperature (EOT) sensor harness connector.
  2. Turn ignition switch ON.
  3. Check the voltage between EOT sensor harness connector and ground.

Nissan Maxima. CHECK EOT SENSOR POWER SUPPLY CIRCUIT

3.CHECK EOT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between EOT sensor harness connector and ECM harness connector.
  4. Also check harness for short to ground and short to power.

Nissan Maxima. CHECK EOT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

4.CHECK ENGINE OIL TEMPERATURE SENSOR

5.CHECK INTERMITTENT INCIDENT

Component Inspection

1.CHECK ENGINE OIL TEMPERATURE SENSOR

Nissan Maxima. CHECK ENGINE OIL TEMPERATURE SENSOR

  1. Turn ignition switch OFF.
  2. Disconnect engine oil temperature sensor harness connector.
  3. Remove engine oil temperature sensor.
  4. Check resistance between engine oil temperature sensor terminals by heating with hot water as shown in the figure

Nissan Maxima. CHECK ENGINE OIL TEMPERATURE SENSOR

    P0196 EOT sensor
    Description The engine oil temperature sensor is used to detect the engine oil temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the e ...

    P0222, P0223 TP sensor
    Description Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement. The ...

    Other materials:

    Maintenance schedules
    To help ensure smooth, safe and economical driving, NISSAN provides two maintenance schedules that may be used, depending upon the conditions in which you usually drive. These schedules contain both distance and time intervals, up to 120,000 miles (192,000 km)/144 months. For most people, the ...

    Magnet clutch
    Description SYSTEM DESCRIPTION A/C auto amp. controls A/C compressor operation by ambient temperature and signal from ECM. Low Temperature Protection Control A/C auto amp. will turn the A/C compressor ON or OFF as determined by a signal detected by ambient sensor. When ambient temperatur ...

    Sun visors
    To block glare from the front, swing down the sun visor. To block glare from the side, remove the sun visor from the center mount and swing the visor to the side. Slide the extension sun visor in or out as needed. CAUTION Do not store the sun visor before returning the exte ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2024 Copyright www.nimainfo.com
    0.0061