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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1025 (Seats) >> With Climate Controlled Seats >> Component Diagnosis >> Climate Controlled Seat Blower Motor >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR

    Perform climate controlled seat blower motor component inspection. Refer to "COMPONENT INSPECTION (CLIMATE CONTROLLED SEAT BLOWER MOTOR) ".

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Replace climate controlled seat blower motor.

  2. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR POWER SUPPLY
    1. Turn ignition switch ON.
    2. Check voltage between climate controlled seat blower motor connector B220 terminal 2 and ground.
    VOLTAGE SPECIFICATION

    Climate controlled seat blower motor Ground Voltage (Approx.)
    Connector Terminal
    B220 2 - Battery voltage
    Fig 1: Checking Voltage Between Climate Controlled Seat Blower Motor Connector B220 Terminal 2 And Ground
    G05876215Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO  4.

    NO: GO TO 3.

  3. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect climate controlled seat blower motor connector and climate controlled seat control unit connector B212.
    3. Check continuity between climate controlled seat blower motor connector B220 (A) terminal 2 and climate controlled seat control unit connector B212 (B) terminal 7.
      CONTINUITY CHART

      Climate controlled seat blower motor Climate controlled seat control unit Continuity
      Connector Terminal Connector Terminal
      B220 (A) 2 B212 (B) 7 Yes
      Fig 2: Checking Continuity Between Seat Blower Motor Connector B220 Terminal 2 And Seat Control Unit Connector B212 Terminal 7
      G05876216Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between climate controlled seat blower motor connector B220 (A) terminal 2 and ground.
      CONTINUITY CHART

      Climate controlled seat blower motor Ground Continuity
      Connector Terminal
      B220 (A) 2 - No

      Is the inspection result normal? 

      YES: Replace climate controlled seat control unit.

      NO: Repair harness or connectors.

  4. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL

    Check voltage between climate controlled seat blower motor connector B220 terminal 3 and ground.

    VOLTAGE SPECIFICATION

    Climate controlled seat blower motor Ground Condition Voltage (Approx.)
    Connector Terminal Climate controlled seat switch
    B220 3 - HEAT or COOL 4.5 V - 8.0 V

    Is the inspection result normal? 

    YES: GO TO  6.

    NO: GO TO 5.

    Fig 3: Checking Voltage Between Climate Controlled Seat Blower Motor Connector B220 Terminal 3 And Ground
    G05876217Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect climate controlled seat blower motor connector and climate controlled seat control unit connector B212.
    3. Check continuity between climate controlled seat blower motor connector B220 (A) terminal 3 and climate controlled seat control unit connector B212 (B) terminal 4.
      CONTINUITY CHART

      Climate controlled seat blower motor Climate controlled seat control unit Continuity
      Connector Terminal Connector Terminal
      B220 (A) 3 B212 (B) 4 Yes
    4. Check continuity between climate controlled seat blower motor connector B220 (A) terminal 3 and ground.
      Fig 4: Checking Continuity Between Climate Controlled Seat Blower Motor Connector B220 (A) Terminal 3 And Ground
      G05876218Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY CHART

      Climate controlled seat blower motor Ground Continuity
      Connector Terminal
      B220 (A) 3 - No

      Is the inspection result normal? 

      YES: Replace climate controlled seat control unit.

      NO: Repair harness or connectors.

  6. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR GROUND CIRCUIT
    1. Disconnect climate controlled seat blower motor connector and climate controlled seat control unit connector B212.
    2. Check continuity between climate controlled seat blower motor connector B220 (A) terminal 4 and climate controlled seat control unit connector B212 (B) terminal 6.
    CONTINUITY CHART

    Climate controlled seat blower motor Climate controlled seat control unit Continuity
    Connector Terminal Connector Terminal
    B220 (A) 4 B212 (B) 6 Yes

    Is the inspection result normal? 

    YES: Replace climate controlled seat control unit.

    NO: Repair harness or connectors.

    Fig 5: Checking Continuity Between Seat Blower Motor Connector B220 Terminal 4 And Seat Control Unit Connector B212 Terminal 6
    G05876219Courtesy of NISSAN MOTOR CO., U.S.A.
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