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Diagnostic Procedure For In-Vehicle Sensor

WARNING: This page is about a different car, the 2007 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM: In-vehicle sensor circuit is open or shorted. (22 or -22 is indicated on unified meter and A/C amp. as a result of conducting Self-diagnosis STEP-2.)

Fig 1: In-Vehicle Sensor Diagnostic Circuit
G04878068Courtesy of NISSAN MOTOR CO., U.S.A.
  1. CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR AND GROUND 
    1. Turn ignition switch OFF.
    2. Disconnect in-vehicle sensor connector.
    3. Turn ignition switch ON.
    4. Check voltage between in-vehicle sensor harness connector M32 terminal 1 and ground.

      1 - Ground: Approx. 5V 

    Fig 2: Checking Voltage Between In-Vehicle Sensor Harness Connector M32 Terminal 1 And Ground
    G04917613Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  2.

    NG: GO TO  4.

  2. CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND UNIFIED METER AND A/C AMP  .
    1. Turn ignition switch OFF.
    2. Disconnect unified meter and A/C amp. connector.
    3. Check continuity between in-vehicle sensor harness connector M32 terminal 2 and unified meter and A/C amp. harness connector M89 terminal 49.

      2 - 49: Continuity should exist  .

    Fig 3: Checking Continuity Between In-Vehicle Sensor And Unified Meter And A/C Amp. Connector Terminal
    G04917614Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  3.

    NG: Repair harness or connector.

  3. CHECK IN-VEHICLE SENSOR 

    Refer to "IN-VEHICLE SENSOR ".

    OK or NG 

    OK:

    1. Replace unified meter and A/C amp. Refer to "UNIFIED METER AND A/C AMP .".
    2. Go to "FUNCTION CONFIRMATION PROCEDURE " and perform self-diagnosis STEP 2. Confirm that code No. 20 is displayed.

    NG:

    1. Replace in-vehicle sensor. Refer to "IN-VEHICLE SENSOR ".
    2. Go to "FUNCTION CONFIRMATION PROCEDURE " and perform self-diagnosis STEP 2. Confirm that code No. 20 is displayed.
  4. CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND UNIFIED METER AND A/C AMP  .
    1. Turn ignition switch OFF.
    2. Disconnect unified meter and A/C amp. connector.
    3. Check continuity between in-vehicle sensor harness connector M32 terminal 1 and unified meter and A/C amp. harness connector M89 terminal 40.

      1 - 40: Continuity should exist  .

    4. Check continuity between in-vehicle sensor harness connector M32 terminal 1 and ground.

      1 - Ground: Continuity should not exist  .

    Fig 4: Checking Continuity Between In-Vehicle Sensor And Unified Meter And A/C Amp. Connector Terminal
    G04917615Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK:

    1. Replace unified meter and A/C amp. Refer to "UNIFIED METER AND A/C AMP ".
    2. Go to "FUNCTION CONFIRMATION PROCEDURE " ( and perform self-diagnosis STEP 2. Confirm that code No. 20 is displayed.

    NG: Repair harness or connector.

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