Tesla Model 3 Owners & Service Manuals

Tesla Model 3: DC Input Assembly - HV Battery- Install

Tesla Model 3 2017-2025 Service Manual / Battery System / HV Battery Electrical Components / DC Input Assembly - HV Battery (Remove and Replace) / DC Input Assembly - HV Battery- Install

Install

DC Input Assembly - HV Battery- Install

  1. Install the DC input assembly to the penthouse, install the bolts (x4) that attach the DC input assembly to the penthouse, and then mark the bolts with a paint pen after they are torqued. Torque 6 Nm

DC Input Assembly - HV Battery- Install

  1. Install new bolts (x2) to attach the DC input busbars to the fast charge contactor busbars, and then mark the bolts with a paint pen after they are torqued. Torque 9 Nm

Generic Measurement - Actual busbars and fasteners might appear different Generic Measurement - Actual busbars and fasteners might appear different

  1. Use the Hioki resistance meter to measure the resistance at the HV joint between the positive DC input busbar and the positive (LH) fast charge contactor busbar.

Note: The maximum acceptable resistance is 0.060 mΩ (60 μΩ). If the resistance is above this value, escalate a Toolbox session, as appropriate.

Generic Measurement - Actual busbars and fasteners might appear different Generic Measurement - Actual busbars and fasteners might appear different

  1. Use the Hioki resistance meter to measure the resistance at the HV joint between the negative DC input busbar and the negative (RH) fast charge contactor busbar.

Note: The maximum acceptable resistance is 0.060 mΩ (60 μΩ). If the resistance is above this value, escalate a Toolbox session, as appropriate.

DC Input Assembly - HV Battery- Install

  1. Install the insulator for the DC input assembly.

DC Input Assembly - HV Battery- Install

  1. Connect the electrical harness to the DC input assembly connector.
  2. Install the pyrotechnic battery disconnect into the penthouse. See Pyrotechnic Battery Disconnect (Remove and Replace).

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