2023-12-20
HV Junction Box (Retrofit)
Code de correction 44301406
Avertissement
Seuls les techniciens qui ont été sensibilisés aux dangers de la haute tension (HT) et qui ont suivi toutes les formations de certification requises (le cas échéant) sont autorisés à effectuer cette procédure. Portez toujours un équipement de protection personnelle et des gants isolants haute tension ayant un classement minimal de 0 (1000 volts) lorsque vous manipulez un câble à haute tension. Se référer à la note technique TN-15-92-003, « Mises en garde relatives à la haute tension » pour obtenir des renseignements supplémentaires sur la sécurité.
Remarque
Perform this retrofit to install a dual motor 2nd generation HV junction box into a rear
wheel drive vehicle.
- Open all four doors
- Lower all 4 windows
- Move both front seats fully forward
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Latch all four doors
RemarqueDo not slam doors while latches are engaged
-
Open hood
RemarqueUsing MCU touchscreen > Controls > Frunk Trunk
- Remove rear underhood apron
- Remove LH underhood apron
- Remove RH underhood apron
-
Remove front underhood apron
Remarque2x push clips, 7x trim clips, Remove push clips, then pry up evenly using trim tool
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Remove latch cover assembly
Remarque2x clips, 2x connectors
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Remove frunk carpet
Remarque4x anchors, 4x carpeted trim, Anchors are twisted off from studs
-
Remove frunk extension
Remarque4x double bolts, 10mm, 4 Nm, 5x bolts, 10mm, 4 Nm
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Remove frunk
Remarque4x bolts, 13mm, 8 Nm, 2x bolts, 10mm, 6 Nm, Lift frunk slightly to remove the hood latch cable then remove frunk
-
Remove the cabin filter and cover then lift up the RH side of cowl screen panel to access cabin filter housing
Remarque2x push clips, Place shop rag under trim to support if needed
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Remove bolts securing front HVAC filter housing
Remarque2x bolts, 10mm, 1.5 Nm
-
Remove front HVAC filter housing
Remarque2x tabs
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Raise and support vehicle
RemarqueSet air suspension to "Jack Mode" if equipped Via Controls > ''Service''
-
Power down vehicle using MCU
RemarqueControls > Safety&Security > Power Off > ''POWER OFF''
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Disconnect the 12V battery negative terminal
Remarque1x nut, 10mm, 5 Nm
-
Disconnect the first responder loop
RemarqueWait at least 2 minutes for all electrical circuits to fully discharge, Release red locking tab then disconnect.
-
Remove 2nd row seat bottom cushion
Remarque2x clips, 7x connectors, Number of connectors may vary based on configuration, Release the leading edge of the seat on either side
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Remove NVH padding from underneath 2nd row seat cushion
RemarqueIf equipped
-
Remove bolts securing seat bottom frame
Remarque8x bolts, 11mm, 26 Nm
-
Lift up and support seat bottom frame
RemarqueRelease harness clips if necessary
- Remove all items from pockets and ensure not wearing metal items
-
Inspect HV insulating gloves
RemarqueCheck gloves for damage prior to use, Refer to service document TN-15-92-003, for information on inspecting HV gloves.
- Put on HV insulating gloves and leather over gloves
-
Remove the HVIL bolt from the HV junction box
Remarque1x bolt, 8mm, 4 Nm (NA, JP, Discard after removal), 5 Nm (EU, APAC, fastener is reusable)
-
Remove bolts securing HVJB cover to HVJB box
Remarque4x nuts, 10mm, 8 Nm, 1x bolt, 10mm, 8 Nm, Fastener count may vary based on configuration
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Verify no high voltage
RemarqueMake sure to wear PPE (HV gloves, safety glasses) when working on high voltage component, Measure B+ to Ground, B- to Ground, B+ to B-, If voltage is greater than 10V, Pack contactors are not open or welded, Stop work and reach out to Service Engineering
-
Remove the ground nut from the ground stud located on the vehicle chassis
Remarque1x nut, 13mm, 8 Nm
-
Remove the charge port HV cables
Remarque2x nuts, 13mm, 9 Nm, Nuts are captured, Fasteners labeled 7/8
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Remove the FJB HV cables
Remarque2x bolts, 8mm, 4 Nm, Bolts are captured
-
Remove the drive inverter and HV battery cables
Remarque2x nuts, 13mm, 9 Nm, Nuts are captured
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Disconnect and remove all 4 HV harnesses from both chargers to HVJB
Remarque8x connectors
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Release coolant hose
Remarque2x barrel clips, Move hose from covering HV junction box bolts
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Remove the bolts that secure the HV junction box
Remarque4x bolts, 10mm, 5 Nm, Fastener count may vary based on configuration from 2,3 and 4 bolts
-
Disconnect the HVJB connector
Remarque1x electrical connector, Lift HV junction box assembly slightly for access
- Remove HV junction box from vehicle
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Inspect the HVJB to FJB HV harness
RemarqueIf the positive and negative cables of the HVJB to FJB HV harness are of the same length, then replacement of the HVJB to FJB HV Harness will also be required. Discontinue this procedure and go to the identical step in HV Junction Box and HV Harness (Retrofit). If the positive and negative cables are of different lengths, then continue to the next step.
- Install Dual Motor HV junction box into vehicle
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Connect HV junction box fan harness
Remarque1x electrical connector, Lift HV junction box assembly slightly for access
-
Install the bolts that secure the HV junction box
Remarque4x bolts, 10mm, 5 Nm, Fastener count may vary based on configuration from 2,3 and 4 bolts
-
Secure coolant hose
Remarque2x barrel clips
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Install the HV cables from the junction box to both chargers
Remarque8x connectors
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Install the charge port HV cables
Remarque2x bolts, 13 mm, 9 Nm, Fasteners labeled 7/8, Clean with IPA, Allow 1 min to dry
-
Install drive inverter and HV battery cables
Remarque2x bolts, 13mm, 9 Nm, Clean HV cables and HVJB connecting points with IPA wipes , Allow 1 min to dry
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Install the negative FJB HV cable
Remarque1x bolts, 8mm, 4 Nm, Clean HV cable and HVJB connecting points with IPA wipes, Allow 1 min for IPA to dry
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Install the positive FJB HV cable
Remarque1x bolts, 8mm, 4 Nm, Clean HV cable and HVJB connecting points with IPA wipes, Allow 1 min for IPA to dry
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Install the HV junction box cover
Remarque4x nuts, 10mm, 8 Nm, 1x bolt, 10mm, 8 Nm, Fastener count may vary based on configuration
-
Install the HVIL bolt into the HV junction box cover
Remarque1x bolt, 8mm, 4 Nm (NA, JP, Install new fastener), 5 Nm (EU, APAC, fastener is reusable)
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Cut two pieces of butyl patch
Remarque2x butyl patch, Cut butyl patches into 35x35mm square pieces
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Install butyl patch squares onto openings for the front drive unit cables on the HV junction box to prevent dirt/water ingress
Remarque2x openings, Note always install butyl patches and install new patches if lid is removed, Butyl patches must remain installed to prevent contamination ingress
-
Install the ground nut from the ground stud located on the vehicle chassis
Remarque1x nut, 13mm, 8 Nm
- Remove the leather glove protectors and HV insulating gloves
-
Lower seat frame into position and secure harness clips to frame
Remarque8x clips
-
Install and torque bolts securing seat frame to vehicle
Remarque8x bolts, 11mm, 26 Nm
- Place NVH padding onto seat frame
-
Reinstall seat bottom cushion
Remarque2x clips, 7x connectors if equipped, Replace clips if necessary
-
Connect first responder loop
Remarque1x connector, Engage red locking tab
-
Connect 12V battery negative terminal
Remarque1x nut, 10mm, 5 Nm
-
Install front HVAC filter housing
Remarque2x tabs
-
Install bolts securing front HVAC filter housing
Remarque2x bolts, 10mm, 1.5 Nm
-
Install cabin filter and cover then secure cowl screen panel
Remarque2x push clips
-
Install frunk
Remarque4x bolts, 13 mm, 8 Nm, 2x bolts, 10 mm, 6 Nm, before seating frunk attach hood latch cable.
-
Install frunk extension
Remarque4x double bolts, 10 mm, 4 Nm, 5x bolts, 10 mm, 4 Nm
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Install frunk carpet
Remarque4x anchors, 4x carpeted trim, Install side covers first, Hand tighten anchors to studs, Tuck carpet under frunk seal
-
Install latch cover assembly
Remarque2x clips, 2x connectors
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Install front underhood apron
Remarque2x push clips, 7x trim clips
- Install RH underhood apron
- Install LH underhood apron
-
Install rear underhood apron
Remarque8x clips
-
Close hood
RemarquePress firmly in green highlighted areas (see image), Damage may result from pressure elsewhere on hood
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Remove vehicle from lift
RemarqueLower rack arms fully and remove them from under vehicle, Remove air suspension from "Jack Mode" via Controls > Service > '' JACK MODE''
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Unlatch all doors
RemarqueUse a screwdriver to release latch while pulling door handle
- Move both front seats to their original positions
- Raise all 4 windows
- Close all four doors