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Diagnostic Procedure For Ambient Sensor 1

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

SYMPTOM: Ambient sensor 1 circuit is open or shorted. [40 or 41 is indicated on the navi screen (only if equipped) as a result of conducting the front air control self-diagnosis].

Fig 1: Inspecting Ambient Sensor 1
G04913477
  1. CHECK VOLTAGE BETWEEN AMBIENT SENSOR 1 AND GROUND 
    1. Disconnect ambient sensor 1 connector.
    2. Turn ignition switch ON.
    3. Check voltage between ambient sensor 1 harness connector E1 terminal 1 and ground.

      1 - Ground : Approx. 5V 

    OK or NG 

    OK: GO TO 2.

    NG: GO TO  4.

    Fig 2: Checking Voltage Between Ambient Sensor 1 Harness Connector E1 Terminal 1 And Ground
    G04903442
  2. CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR 1 AND FRONT AIR CONTROL 
    1. Turn ignition switch OFF.
    2. Disconnect front air control connector.
    3. Check continuity between ambient sensor 1 harness connector E1 terminal 2 and front air control harness connector M49 terminal 13.

      2 - 13 : Continuity should exist. 

    OK or NG 

    OK: GO TO 3.

    NG: Repair harness or connector.

    Fig 3: Checking Continuity Between Harness Connector E1 Terminal 2 And Connector M49 Terminal 13
    G04913479
  3. CHECK AMBIENT SENSOR 1 

    Check ambient sensor 1. Refer to "AMBIENT SENSOR 1 ".

    OK or NG 

    OK:

    1. Replace front air control. Refer to "FRONT AIR CONTROL ".
    2. Go to "A/C SYSTEM SELF-DIAGNOSIS FUNCTION " and perform self-diagnosis.

    NG:

    1. Replace ambient sensor 1. Refer to "AMBIENT SENSOR ".
    2. Go to "A/C SYSTEM SELF-DIAGNOSIS FUNCTION " and perform self-diagnosis.
  4. CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR 1 AND FRONT AIR CONTROL 
    1. Turn ignition switch OFF.
    2. Disconnect front air control connector.
    3. Check continuity between ambient sensor 1 harness connector E1 (B) terminal 1 and front air control harness connector M50 (A) terminal 28.
      CONTINUITY REFERENCE CHART

      A B  
      Connector Terminal Connector Terminal Continuity
      Front air control: M50 28 Ambient sensor 1: E1 1 Yes
    4. Check continuity between ambient sensor 1 harness connector E1 terminal 2 and ground.
      Fig 4: Checking Continuity Between Harness Connector E1 Terminal 1 And Connector M50 (A) Terminal 28
      G04913480
      CONTINUITY REFERENCE CHART

      B   Continuity
      Connector Terminal Ground No
      Ambient Sensor 1: E1 1

    OK or NG 

    OK:

    1. Replace front air control. Refer to "FRONT AIR CONTROL ".
    2. Go to "A/C SYSTEM SELF-DIAGNOSIS FUNCTION " and perform self-diagnosis.

    NG: Repair harness or connector.

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