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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Driver Assistance System) >> DTC/Circuit Diagnosis >> C1B52 Blind Spot Warning Indicator Open Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BLIND SPOT WARNING INDICATOR CIRCUIT FOR OPEN (1) 
    1. Turn ignition switch OFF.
    2. Disconnect side radar harness connector and Blind Spot Warning indicator harness connector.
    3. Check continuity between side radar harness connector and Blind Spot Warning indicator harness connector.

    Side radar

    Blind Spot Warning indicator

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    B77 LH

    4

    D21 LH

    1

    Yes

    B78 RH

    D116 RH

    Is the inspection result normal?

    YES

    GO TO 2 .

    NO

    Repair or replace harness or connector.

  2. CHECK BLIND SPOT WARNING INDICATOR CIRCUIT FOR OPEN (2) 

    Check continuity between Blind Spot Warning indicator harness connector and ground.

    Blind Spot Warning indicator

    Ground

    Continuity

    Connector

    Terminal

    D21 LH

    4

    Yes

    D116 RH

    Is the inspection result normal?

    YES

    GO TO 3 .

    NO

    Repair or replace harness or connector.

  3. CHECK SIDE RADAR VOLTAGE OUTPUT 
    1. Connect side radar harness connector.
    2. Check voltage between Blind Spot Warning indicator harness connector and ground.

      Blind Spot Warning indicator

      Ground

      Condition

      Voltage

      (Approx.)

      Connector

      Terminal

      D21 LH

      1

      Ignition switch

      OFF → ON

      (Approx. 2 sec.)

      6 V

      D116 RH

    Is the inspection result normal?

    YES

    Replace Blind Spot Warning indicator. Refer to Removal and Installation .

    NO

    Replace side radar. Refer to Removal and Installation .