Controller - High Voltage (Remove and Replace)
Correction code 16301602 1.26 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.
Remove
- If the high voltage controller is being removed as part of another component's replacement procedure, and the same controller will be installed later, go to step 3. Otherwise, continue to the next step.
- Perform a backup of the high voltage controller data. See Controller - High Voltage (Backup and Restore).
- Remove the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
- Disconnect 12V/LV power. See 12V/LV Power (Disconnect and Connect).
- Perform the vehicle isolation procedure. See Vehicle HV Disablement Procedure.
- Remove the 2nd row seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace).
- Remove the ancillary bay cover. See Cover - Ancillary Bay (Remove and Replace).
- Remove the pyrotechnic battery disconnect. See Pyrotechnic Battery Disconnect (Remove and Replace).
- Disconnect the ancillary bay harness from the high voltage controller connectors.
-
Remove the bolts that attach the high voltage controller to the hinge tray, and then remove the controller from the vehicle.
Install
-
Install the high voltage controller into the ancillary bay, and then install the bolts that attach the high voltage controller to the hinge tray.
- Connect the ancillary bay harness to the high voltage controller connectors.
-
Install the pyrotechnic
battery disconnect. See Pyrotechnic Battery Disconnect (Remove and Replace).
NoteDo not install the ancillary bay cover at this time.
- If the high voltage controller was removed and then installed as part of another component's replacement procedure, return to that procedure.
- Use IPA wipes to clean the ancillary bay cover gasket surface, and the mating surface of the HV battery.
-
Visually inspect the
condition of the ancillary bay cover gasket and the HV battery mating surface
for cracks, cuts, gouges, abrasions, or any damage that could affect the
seal.
NoteIf the damage to the gasket is severe, replace the ancillary bay cover. If there is minor damage that might affect the seal, perform an ancillary bay air leak test when instructed to do so.
- Use an IPA wipe to clean any residue from the high voltage controller mounting bolt holes and both the inside and outside of the ancillary bay cover at the bolt holes.
-
If a new 3-bolt high voltage
controller is replacing an old 4-bolt high voltage controller, or a new
4-bolt high voltage controller is replacing an old 5-bolt high voltage
controller, perform these additional steps to retrofit an ancillary bay cover
with an aluminum retrofit patch. Otherwise go to step 9.
NoteIf a new 3-bolt high voltage controller is replacing an old 5-bolt high voltage controller, install both patches.
-
Set the ancillary bay cover onto
the ancillary bay, and install the two bolts on either side of the high voltage
controller connector.
- Connect the electrical harness to the high voltage controller connector.
-
Connect the positive 12V
output cable to the DCDC passthrough, install a new nut to attach the cable,
and mark the nut with a pink/violet paint pen after torque.CAUTIONMake sure that the rubber boot is not trapped under the cable lug or pinched between the cable lug and nut.
- If removed, replace the cover on the positive 12V output cable at the DCDC passthrough, and then press down to attach the cover.
- Connect 12V/LV power. See 12V/LV Power (Disconnect and Connect).
- Connect a 12V charger to the 12V battery, or an LV maintainer. See LV Maintainer (Connect and Disconnect).
- Perform a restore of the high voltage controller data. See Controller - High Voltage (Backup and Restore).
- Disconnect the 12V charger from the 12V battery, or the LV maintainer. See LV Maintainer (Connect and Disconnect).
-
Hand-tighten the ancillary bay
cover bolts.
NoteDifferent ancillary bay cover revisions have 28, 18, or 16 bolts.
-
Torque the ancillary bay cover
bolts in the sequence shown, and mark each with a green paint pen as they
are torqued.CAUTIONUse an External Torx E10 5-Lobe socket that is not magnetized. Sockets with magnets will not fully grip and can possibly strip the bolt head.Tip: Use of the following tool(s) is recommended:
- External Torx E10 5-Lobe
- 4 in extension
- Ratchet/torque wrench
-
Install and hand-tighten new
bolts that attach the high voltage controller internally to the ancillary bay
cover.
-
Torque the high voltage
controller to ancillary bay cover bolts in the sequence shown, and mark each
bolt with an orange paint pen as they are torqued.CAUTIONInsufficient torque of bolts 1 and 2 opens the high voltage interlock loop circuit.Tip: Use of the following tool(s) is recommended:
- External Torx E10
- 4 in extension
- Ratchet/torque wrench
- Torque wrench with angle measurement
- If damage was found on the ancillary bay cover gasket or the HV battery mating surface, or if the aluminum tape retrofit patch was replaced, or if another procedure instructed to perform an ancillary bay air leak test, do that now. See Ancillary Bay Air Leak Test.
-
Install and hand-tighten the
adjustable elements (x4) on the ancillary bay cover counter-clockwise so
that they are fully engaged.
CAUTIONHand-tighten only.
- Install the ancillary bay rails to the body and ancillary bay cover, but do not install the bolts at this time.
- Install the center 2nd row buckle. See Buckle - 2nd Row - Center (Remove and Replace).
-
This video shows how to
properly stack the 2nd row LH seat buckle onto the 2nd row center seat belt
anchor:
- Set the 2nd row center seat belt anchor onto the 2nd row LH inner ancillary bay rail, with the belt to the RH side.
- Make sure that the belt is not twisted, and lays flat against the 2nd row seatback.
- Set the guide pin of the 2nd row LH seat buckle bracket into the hole of the 2nd row LH inner ancillary bay rail, and pivot the bracket down onto the anchor, aligning the guide pin to the slot in the anchor.
-
Install a new bolt to attach
the seat buckle bracket, the seat belt anchor, and the inner ancillary bay rail
to the body.
- Verify the stacking.
- Install the plastic bracket that attaches the female side of the electrical connector to the body studs.
- Connect the electrical harness to the LH rear seat belt buckle connector.
- Install and hand-tighten the bolts that attach the rails to the ancillary bay cover and body.
-
Torque the bolts to
specification.
- Install the LH rear sill panel trim. See Trim - Sill Panel - Rear - LH (Remove and Replace).
- Install the foam cover to the LH side of the ancillary bay.
- Install the 2nd row seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace).
- Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).