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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 442 (Seats (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Diagnosis Procedure >> Driver Side

Driver Side

WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUSE 

    Check if any of the following fuses are blown.

    Signal name

    Fuse No.

    Battery power supply

    68 (15A)

    IGN power supply

    29 (5A)

    Is the fuse blown?

    YES

    Replace the blown fuse after repairing the affected circuit.

    NO

    GO TO 2.

  2. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (DRIVER SIDE) POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect climate controlled seat control unit (driver side) connector.
    3. Turn ignition switch ON.
    4. Check voltage between climate controlled seat control unit (driver side) harness connector and ground.

      (+)

      (-)

      Voltage (V)

      (Approx.)

      Climate controlled seat control unit (driver side)

      Connector

      Terminal

      B205

      29

      Ground

      Battery voltage

    Is the inspection result normal?

    YES

    GO TO 7.

    NO

    GO TO 3.

  3. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (DRIVER SIDE) POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect climate controlled seat relay.
    3. Check continuity between climate controlled seat control unit (driver side) harness connector and climate controlled seat relay harness connector.

      Climate controlled seat control unit (driver side)

      Climate controlled seat relay

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      B205

      29

      M58

      6

      Yes

    4. Check continuity between climate controlled seat control unit (driver side) harness connector and ground.

      Climate controlled seat control unit (driver side)

      Ground

      Continuity

      Connector

      Terminal

      B205

      29

      No

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace harness or connector.

  4. CHECK CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT 
    1. Turn ignition switch ON.
    2. Check voltage between climate controlled seat relay harness connector and ground.

      (+)

      (-)

      Voltage (V)

      (Approx.)

      Climate controlled seat relay

      Connector

      Terminal

      M58

      2

      Ground

      Battery voltage

      7

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair or replace harness or connector.

  5. CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between climate controlled seat relay harness connector and ground.

      Climate controlled seat relay

      Ground

      Continuity

      Connector

      Terminal

      M58

      1

      Yes

    Is the inspection result normal?

    YES

    GO TO 6.

    NO

    Repair or replace harness.

  6. CHECK CLIMATE CONTROLLED SEAT RELAY 

    Check climate controlled seat relay.

    Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 7.

    NO

    Replace climate controlled seat relay.

  7. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (DRIVER SIDE) GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between climate control unit (driver side) harness connector and ground.

      Climate controlled seat control unit (driver side)

      Ground

      Continuity

      Connector

      Terminal

      B205

      27

      Yes

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Intermittent Incident .

    NO

    Repair or replace harness or connector.