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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Heater & Air Conditioning Control System (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC B262A, B262B, B2657, B2658: Exhaust Gas/Outside Odor Detecting Sensor >> Diagnosis Procedure

Diagnosis Procedure

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.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK FUSE

    1. Turn ignition switch OFF.
    2. Check 10A fuse [No. 30, located in fuse block (J/B)]
      NOTE:

      Refer to TERMINAL ARRANGEMENT .

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    If a fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

  2. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR POWER SUPPLY

    1. Turn ignition switch OFF.
    2. Disconnect exhaust gas / outside odor detecting sensor connector.
    3. Turn ignition switch ON.
    4. Check voltage between exhaust gas / outside odor detecting sensor harness and ground.
      + - Voltage
      (Approx.)
      Exhaust gas / outside odor detecting sensor
      Connector Terminal
      E227 1 Ground Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair harness or connector between exhaust gas / outside odor detecting sensor and fuse block (J/B).

  3. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.
      Exhaust gas / outside odor detecting sensor - Continuity
      Connector Terminal
      E227 2 Ground Yes

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair harness or connector.

  4. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT

    1. Connect exhaust gas / outside odor detecting sensor connector.
    2. Turn ignition switch ON.
    3. Check voltage between A/C auto amp.harness connector and ground.
      + - Voltage
      (Approx.)
      A/C auto amp.
      Connector Terminal
      M50 30 Ground Battery voltage

    Is the inspection result normal?

    YES 

    Replace A/C auto amp. Refer to REMOVAL AND INSTALLATION .

    NO 

    GO TO STEP 5  .

  5. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR OPEN

    1. Turn ignition switch OFF.
    2. Disconnect exhaust gas / outside odor detecting sensor connector and A/C auto amp.connector.
    3. Check continuity between exhaust gas / outside odor detecting sensor harness connector and A/C auto amp. connector.
      Exhaust gas / outside odor detecting sensor A/C auto amp. Continuity
      Connector Terminal Connector Terminal
      E227 3 M50 30 Yes

    Is the inspection result normal?

    YES 

    GO TO STEP 6  .

    NO 

    Repair harness or connector.

  6. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR GROUND SHORT

    Check continuity between exhaust gas / outside odor detecting sensor harness connector and ground.

    Exhaust gas / outside odor detecting sensor - Continuity
    Connector Terminal
    E227 3 Ground No

    Is the inspection result normal?

    YES 

    GO TO STEP 7  .

    NO 

    Repair harness or connector.

  7. CHECK EXHAUST GAS / OUTSIDE ODOR DETECTING SENSOR SIGNAL CIRCUIT FOR POWER SHORT

    Check voltage between exhaust gas / outside odor detecting sensor harness and ground.

    + - Voltage
    (Approx.)
    Exhaust gas / outside odor detecting sensor
    Connector Terminal
    E227 3 Ground 0 V

    Is the inspection result normal?

    YES 

    Replace exhaust gas / outside odor detecting sensor. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair harness or connector.

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