Altima 2007-2009

Inverter With Converter

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Removal & Installation




CAUTION
Before beginning service, thoroughly review ALL of the High Voltage (HV) system and general precautions at the beginning of this section. Failure to do so can result in serious personal injury or death.

  1. Drain the coolant from the inverter cooling system, as outlined in this section.
  2.  
  3. Remove the inverter cover.
  4.  
  5. Remove the air cleaner and air duct.
  6.  
  7. Remove the nuts and bolts from the upper center bracket.
  8.  
  9. Remove the inverter upper center bracket.
  10.  
  11. Remove the hoses and bolts from the inverter cooling reservoir tank.
  12.  
  13. Remove the inverter cooling reservoir tank from the vehicle
  14.  
  15. Disconnect the MG1 and MG2 connectors from the inverter as follows:
    1. Remove bolts G, I, J and L as shown.
    2.  
    3. Remove bolts H and K as shown.
    4.  
    5. Disconnect the MG1 and MG2 connectors from the inverter.

      Click image to see an enlarged view

      Fig. Inverter connector and bolt identification

    6.  

  16.  
  17. Remove the MG1 and MG2 harness clips from the bracket and set the MG1 and MG2 harness aside.
  18.  
  19. Remove the coolant hoses from the inverter.
  20.  
  21. Remove the upper RH bracket bolt and bracket from the inverter.
  22.  
  23. Remove the terminal cover bolt and terminal cover from the inverter.
  24.  
  25. Disconnect the electric compressor inverter connector (1) from the inverter (4).
  26.  
  27. Remove the frame wire inverter connector bolt (2) and disconnect the frame wire inverter connector (3) from the inverter (4).

    Click image to see an enlarged view

    Fig. Disconnect the electric compressor inverter connector (1) from the inverter (4). Remove the frame wire inverter connector bolt (2) and disconnect the frame wire inverter connector (3) from the inverter (4)

  28.  
  29. Disconnect the engine room harness connector (1) from the inverter (2). (EGI harness connector (3), A: Locked position, B: Unlocked position):

    Click image to see an enlarged view

    Fig. Disconnect the engine room harness connector (1) from the inverter (2)



    Click image to see an enlarged view

    Fig. Lift up and swing the connector lock lever (1) to unlock the connector. Pull up on the engine room harness connector (2) to disconnect it from the inverter (3)-A: locked position, B: Unlocked position

    1. Lift up and swing the connector lock lever (1) to unlock the connector.
    2.  
    3. Pull up on the engine room harness connector (2) to disconnect it from the inverter (3).
    4.  

  30.  
  31. Remove the engine room harness clip from the bracket and set the engine room harness aside.
  32.  
  33. Disconnect the EGI harness connector (3) from the inverter (2).

    Click image to see an enlarged view

    Fig. View of the EGI harness connector (3), inverter (2) and engine room harness connector (1)

  34.  
  35. Remove the inverter nuts.
  36.  
  37. Remove the inverter from the vehicle.
  38.  
  39. Remove any necessary brackets from the inverter.

    Click image to see an enlarged view

    Fig. Exploded view of the inverter with converter assembly and related components

  40.  

To install:

  1. Installation is in the reverse order of removal, noting the following:

    When installing the inverter, lower RH bracket, lower LH bracket, rear LH bracket, rear RH bracket and upper LH bracket should be attached to the inverter in advance.
     
    When lower RH bracket, lower LH bracket, rear LH bracket, rear RH bracket and upper LH bracket are attached to the inverter, they should be touched to anti-rotation at the boss of the inverter.
     

  2.  
  3. When tightening bolts, perform the following procedure:
    1. Temporarily tighten the bolts A, B, E, F.
    2.  
    3. Connect MG1 harness connector and MG2 harness connector.
    4.  
    5. Fully tighten the bolts H, K.
    6.  
    7. Fully tighten the bolts G, I, J and L.
    8.  
    9. Fully tighten the bolt F.
    10.  
    11. Fully tighten the bolts A, B, C, D, E.

      Click image to see an enlarged view

      Fig. Inverter bolt location for tightening sequence

    12.  

  4.  

 
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