Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Passthrough - DCDC - 12V- Remove

Tesla Model 3 2017-2025 Service Manual / Battery System / HV Battery Electrical Components / Passthrough - DCDC - 12V (Remove and Replace) / Passthrough - DCDC - 12V- Remove

Passthrough - DCDC - 12V (Remove and Replace)

SPECIAL TOOLS

Skt, 1/4in Dr, 5-Lobe Torx Plus External (1059330-00-B)

Resistance meter, microohm, Hioki RM 3548 (1076927-00-A)

Remove

  1. Remove the high voltage controller. See Controller - High Voltage (Remove and Replace).

Passthrough - DCDC - 12V- Remove

  1. Remove the nut that attaches the positive terminal of the DCDC harness to the positive DCDC passthrough busbar.

Passthrough - DCDC - 12V- Remove

  1. Remove the nut that attaches the negative terminal of the DCDC harness to the negative DCDC passthrough busbar.

Passthrough - DCDC - 12V- Remove

  1. Release the clip and disconnect the DCDC harness from the power conversion system.

Passthrough - DCDC - 12V- Remove

  1. Remove the bolts that attaches the DCDC ground busbar to the body.

Passthrough - DCDC - 12V- Remove

  1. Remove and discard the nut that attaches the DCDC ground busbar to the HV battery, and remove the DCDC ground busbar from the vehicle. Torque 15 Nm

Passthrough - DCDC - 12V- Remove

  1. Remove the bolts that attach the 12V DCDC passthrough to the penthouse, and then remove the 12V DCDC passthrough from the penthouse..

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     Passthrough - DCDC - 12V- Install

    Install Use an IPA wipe to clean the mating surfaces of the DCDC passthrough, and the DCDC harness. Install the 12V DCDC passthrough into the penthouse, install the bolts that attach the 1

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