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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 614 (Heater & Air Conditioning Control System (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Rear A/C Control >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUSE 

    Check 10A fuse [No. 30, located in the fuse block (J/B)].

    NOTE: Refer to appropriate wiring information .

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Replace the blown fuse after repairing the affected circuit.

  2. CHECK REAR AIR CONTROL POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect rear air control connector.
    3. Turn ignition switch ON.
    4. Check voltage between rear air control harness connector and ground.

      +

      -

      Voltage

      (Approx.)

      Rear air control

      Connector

      Terminal

      M258

      12

      Ground

      Battery voltage

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair harness or connector between rear air control and fuse block (J/B).

  3. CHECK REAR AIR CONTROL GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between rear air control harness connector and ground.

      Rear air control

      --

      Continuity

      Connector

      Terminal

      M258

      1

      Ground

      Yes

    Is the inspection result normal?

    YES

    Replace rear air control. Refer to Removal and Installation .

    NO

    Repair harness or connector.