HIGH VOLTAGE HARNESS - FRONT DRIVE UNIT (Remove and Replace)
Correction code
4450010402
FRT
1.00
NOTE: Unless
otherwise explicitly stated in the procedure, the above correction code and
FRT reflect all of the work required to perform this procedure, including
the linked procedures. Do
not stack correction codes unless explicitly told to do so.
NOTE: See Flat Rate Times to learn more about FRTs and how they are
created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com.
NOTE: See Personal Protection to make
sure wearing proper PPE when performing the below procedure.
Only
technicians who have been trained in High Voltage Awareness and
have completed all required certification courses (if applicable) are permitted to
perform this procedure. Proper personal protective equipment
(PPE) and insulating HV gloves with a minimum rating
of class 0 (1000V) must be worn at all times a high voltage
cable, busbar, or fitting is handled. Refer to Tech Note TN-15-92-003, High Voltage Awareness
Care Points
for additional safety
information.
Torque Specifications
Description | Torque Value | Recommended Tools | Reuse/Replace | Notes |
---|---|---|---|---|
Bolts (x6) that attach the center ski cover to the HV battery |
![]() 34 Nm (25.1 lbs-ft) |
|
Reuse | |
Bolt that attaches the front drive unit HV harness to the front drive unit |
![]() 10 Nm (7.4 lbs-ft) |
|
Reuse |
Remove
- Perform the vehicle HV disablement procedure. See Vehicle HV Disablement Procedure.
- Remove the front HV battery skid plate. See FRONT SKID PLATE (Remove and Replace).
-
Remove the bolt that attaches the
front drive unit HV harness to the front drive unit.
TIpUse of the following tool(s) is recommended:
- 10 mm socket
-
Slide the red release tab to unlock
the front drive unit HV harness connector, and then slowly unlatch the release handle on
the front drive unit HV harness connector, and then disconnect the connector from the
front drive unit.
CAUTIONDo not apply excessive force to the handle; doing so could damage the connector alignment tabs.NoteMake sure that the alignment tabs on the front drive unit header are not damaged.
- Remove the front drive unit harness from the casting, and then move the harness aside.
-
Disconnect the AC compressor HV
harness connector.
NoteDisengage the red locking tab by pulling it away from the connector, then depress the orange tab and pull the connector outward, and then depress the green tab to release the connector.
- Remove the clips (x2) that attach the ancillary harness bracket to the front of HV battery.
- Remove the rear HV battery skid plate. See High Voltage Battery Assembly - Skid Plate - Rear (Remove and Replace).
- Position a coolant drain container underneath the RH rear of the HV battery.
- Disconnect the RH coolant hose from the rear of HV battery, and plug the ends of fittings as soon as possible to avoid coolant loss.
- Remove the coolant drain container from underneath the RH rear of the HV battery.
-
Disconnect the AC HV harness connector
from the right rear of HV battery.
NoteRelease the red tab before releasing the black locking lever.
- Release the clips (x2) that attach the HV battery return tube to the rear of the battery.
-
Release the locking tab, rotate the lever up to disengage the connector, and then
disconnect the front drive unit HV cable from the rear of the HV battery.
CAUTIONDo not apply excessive force to the handle; doing so could damage the connector alignment tabs.
-
With assistance, remove the bolts (x6)
that attach the center ski cover to the HV battery.
NoteThe bolts at both ends are short bolts and the bolts in the middle are long.TIpUse of the following tool(s) is recommended:
- External Torx Plus EP14
- Remove the upper cap covers from both sides of the center ski cover. See Bracket - High Voltage - Ski - Top (Remove and Replace).
- Remove the front drive unit HV harness.
Install
-
Position the front drive unit HV
harness onto the HV battery center ski.
NoteEnsure that the installation direction is consistent with the arrow direction on the center ski cover.NoteUse a plastic trim tool to press the harness into the groove, if necessary.
- Install the upper cap covers to both sides of the center ski cover. See Bracket - High Voltage - Ski - Top (Remove and Replace).
-
With assistance, install the bolts
(x6) that attach the center ski cover to the HV battery.34 Nm (25.1 lbs-ft)NoteThe bolts at both ends are short bolts and the bolts in the middle are long.TIpUse of the following tool(s) is recommended:
- External Torx Plus EP14
-
Slowly latch the release handle while
pressing the front drive unit HV harness connector into the LH rear of the HV
battery.
NoteOnce connected, verify that the locking tab is not damaged and the front drive unit HV connector is fully secured in the latched position.
- Install the clips (x2) that attach the HV battery return tube to the rear of the battery.
-
Connect the AC HV harness connector to
the right rear of HV battery.
NoteHold the connector level with header and secure with even upward force. Rotate the lever arm and secure locking tab. Verify that the latch is fully secured and not damaged.
- Position a coolant drain container underneath the RH rear of the HV battery.
-
Remove the plugs on the ends of
fittings, and then connect the RH coolant hose to the rear of HV battery.
NotePerform a push-pull-push test to make sure that the hose is fully secured.NoteCoolant loss greater than 1L requires vacuum fill.
- Remove the coolant drain container from underneath the RH rear of the HV battery.
- Install the rear HV battery skid plate. See High Voltage Battery Assembly - Skid Plate - Rear (Remove and Replace).
- Install the clips (x2) that attach the ancillary harness bracket to the front of HV battery.
-
Connect the AC compressor HV harness
connector.
NoteAfter the connector is seated and there is an audible click, push the red locking tab to double-lock the connector.
- Install the HV connector lever lock to the front drive unit HV cable connector.
- Install the front drive unit harness to the casting.
- Align the connector to the front drive unit, and then remove the HV connector lever lock before fully latching the connector.
-
Slowly latch the release handle while pressing the front drive
unit HV harness connector into the front drive unit.
NoteOnce connected, verify that the locking tab is not damaged and the front drive unit HV connector is fully secured in the latched position.
-
Install the bolt that attaches the
front drive unit HV harness to the front drive unit.10 Nm (7.4 lbs-ft)TIpUse of the following tool(s) is recommended:
- 10 mm socket
- Install the front HV battery skid plate. See FRONT SKID PLATE (Remove and Replace).
- Install the 2nd row seat cushion. See 2ND ROW SEAT CUSHION (Remove and Replace).
- Connect the LV battery power. See LV Power (Disconnect and Connect).
- Unlock the vehicle gateway. See Gateway (Unlock).
-
On the touchscreeen, touch
Run to start the "Coolant Air Purge" routine, and allow the routine to
complete.
and select NoteMake sure vehicle is not in Drive, shifting the vehicle into Drive will stop this routine. The test will last approximately 10 mins. The test will vary speeds from 3500-6500 RPM (idle speed = ~1500 RPM) and actuate the valve between series and parallel. If speed hovers at 7000 RPM, it indicates the pump is air locked, perform the vacuum fill again. Continue to add coolant and purge until the coolant level reaches between the NOM and MAX Lines on the bottle.
- Exit Service Mode. See Service Mode.
-
Inspect the coolant level and top off
as necessary, and then install the coolant bottle cap.
NoteEnsure that the coolant level is at the "Max" line.
- Install the HEPA filter assembly. See HEPA FILTER (Remove and Replace).