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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Heater & Air Conditioning Control System - Automatic Air Conditioner (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC B257C: Ambient Sensor >> Component Inspection

Component Inspection

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK AMBIENT SENSOR 
    1. Turn ignition switch OFF.
    2. Disconnect ambient sensor connector.
    3. Check resistance between ambient sensor terminals.

      Terminal

      Condition

      Resistance: k?

      Temperature: °C (°F)

      1

      2

      -15 (5)

      12.73

      -10 (14)

      9.92

      -5 (23)

      7.80

      0 (32)

      6.19

      5 (41)

      4.95

      10 (50)

      3.99

      15 (59)

      3.24

      20 (68)

      2.65

      25 (77)

      2.19

      30 (86)

      1.81

      35 (95)

      1.51

      40 (104)

      1.27

      45 (113)

      1.07

    Is the inspection result normal?

    YES

    Inspection End.

    NO

    Replace ambient sensor. Refer to Removal and Installation .