Low Internal Isolation Diagnostics - HV System (Long Range) (Test)
Code de correction
44500300700
1.08
REMARQUE : À moins d’indications explicites contraires dans la procédure, le code de correction et le temps forfaitaire indiqués ci-dessus représentent tout le travail à être fait pour cette procédure, notamment les procédures connexes. N’appliquez pas plusieurs codes de correction à la fois, à moins qu’il vous soit explicitement indiqué de le faire.
REMARQUE : Consultez Temps forfaitaires pour en apprendre plus à propos des temps forfaitaires et de leur création.
NOTE : Consultez Protection individuelle pour vous assurer de porter l’équipement de protection individuelle adéquat lorsque vous effectuez la procédure ci-dessous.
REMARQUE : Voir Précautions ergonomiques pour consulter les pratiques de travail sécuritaires et saines.
- 2025-12-30: Released new procedure.
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Prepare for HV battery removal
RemarqueDue to the potential issues associated with an isolation fault, customer and/or insurance approval is not needed to remove the HV battery while investigating the fault, For high voltage battery packs that have a low internal isolation condition and/or liquid ingress, It is crucial to remove the fluid promptly, HV gloves, Leather over-gloves, Safety glasses, And safety shoes must be worn at all times while handling a vehicle and/or HV battery pack with an internal isolation condition, Refer to Toolbox article 7410000
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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.
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Put on HV insulating gloves and leather over gloves
RemarqueUse HV cut resistant insulated gloves or HV insulating gloves and leather over gloves, HV Insulating gloves must be worn any time a Hioki Tester or Hi-Pot Tester is used, Refer to service document TN-15-92-003 R5 for PPE requirements depending on vehicle configuration.
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Secure vehicle outside of workshop
RemarqueSecure vehicle in an outdoor area with 15M of space around it in every direction
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Open tailgate
RemarquePress button to release, Use manual release as necessary
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Power off vehicle from center display
RemarqueVerify EPBs are engaged, Select charge port icon to ensure drive state is disengaged then power down vehicle via Controls > Safety > Power Off
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Disconnect first responder loop and MV battery connector
Remarque2x connectors, Release locking tab then disconnect FRL connector, Slide eCPA to left then lift lever to release MV battery connector, Early production trucks may have black FRL connector, Release eCPA by pushing down to unlock and slide red locking tab, Wait 2 minutes for electrical circuits to discharge before disconnecting modules
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Remove fastener covers from bed floor assembly
Remarque14x covers
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Remove bed floor assembly
Remarque10x short bolts, 15mm, 56 Nm, 2x long bolts, 15mm, 46Nm, Lift front edge with trim tool then remove panel, Recommend assistance
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Disconnect ancillary bay MV connector
Remarque1x connector, Double locking, Release tab then pivot lever, Release second tab to disengage connector, Wait 1 second between locking tab release to discharge and prevent arcing
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Connect breakout harness to ancillary bay MV connector
Remarque1x connector
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Read HV battery vitals
RemarqueRefer to Toolbox article 41977, The HV vitals are not stable if any of the following is true:Module temperatures are significantly higher than ambient temperature.Module temperatures min and max deviate from each other more than 5 degrees C.Brick voltages min and max deviate more than 20 mV.If vitals are not stable, isolate the pack or vehicle in 30 meter bubble.
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Disconnect breakout harness from ancillary bay MV connector
Remarque1x connector, Double locking, Release tab then pivot lever, Release second tab to disengage connector
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Prepare work area
RemarquePrepare a workspace around a two post lift with nearby access to HV PPE, Battery table, and necessary tooling
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Remove rocker covers
RemarqueRefer to removal steps in HV battery RR procedure
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Move vehicle onto lift
RemarqueEnsure positioning allows rear doors to open, NOTE: If burning odors, popping sounds, flames, or smoke is seen at any time, halt this process and call the fire department immediately! Begin evacuation if vehicle is in the shop.
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Raise vehicle fully and lower lift onto locks
RemarqueSet vehicle to comfortable working height, Ensure an audible click of locks on both sides is heard before lowering, Vehicle may tilt to the side if both locks are not engaged
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Remove HV battery pyro disconnects
Remarque2x pyro disconnects, Refer to pyro disconnect removal steps in battery RR procedure.
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Inspect HV battery flood ports
RemarqueIf any flood port is found open then replace HV battery
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Inspect HV battery for dents, fluid leaks, or other signs of instability
RemarqueIf found, refer to Toolbox Article: 7396600
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Inspect HV battery for coolant leaks or moisture ingress
RemarqueRefer to Toolbox article 7410000, If liquid ingress is found then proceed to HV battery removal, If HV battery removal is not possible continue procedure with pack in vehicle
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Remove HV battery flood ports
Remarque6x flood ports, 8x tabs per flood port, Rotate as needed so that the relief is accessible, Pry between the enclosure and flood port, Once loose remove flood port through relief near breathers
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Remove thermal vent
Remarque2x tabs, Discard vent and breather after removal
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Remove vehicle from lift
RemarqueLower rack arms fully and remove them from under vehicle, Remove air suspension from "Jack Mode"
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Remove HV battery from vehicle
RemarqueRefer to HV battery removal procedure for applicable vehicle model
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Move HV battery to a suitable work area
RemarqueHv battery must have 15M of space around it in every direction
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Ensure entire work area is clear
RemarqueIncluding above and below battery
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Place HV Danger placard on top of battery
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Place barricades around work area
RemarqueNote location of extinguishers and HV rescue hook
- Remove HV insulating gloves