17/06/2022 13:23:45

Resistance Meter (Zero Adjust)

Correction code 16300100 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 proper PPE is worn when performing the below procedure.

  • 1076927-00-A Hioki RM 3548 (includes alligator clip leads L2107)
  • 1076928-00-A Test Probes - Hioki 9461
  • 1080510-00-A Resistance Block
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
This procedure is a DRAFT, although it has been validated. Warnings and Cautions might be missing. Follow safety requirements and use extreme caution when working on or near high voltage systems and components. Provide corrections and feedback to ServiceDevelopment@teslamotors.com.

These procedures supplement installation tasks that require measurement of HV electrical component and busbar resistances.

Warning IconA warning icon, calling your attention to a possibly risky situation
CAUTION
Never use the resistance meter to measure voltage.

Zero Adjust With Alligator Clip Leads

  1. Power on the Hioki resistance meter, and allow a few minutes for it to thermally stabilize.
  2. Plug the alligator clip leads into the resistance meter.
    Informational PurposesAn informational icon, calling your attention
    Note
    Both the positive (red) and negative (black) lead connectors have arrows or marks that align to arrows on the resistance meter.
  3. Use the up arrow and down arrow buttons to set the resistance meter to the 3mΩ range.
  4. Attach the alligator clips together so that the red clip "bites" the upper jaw of the black clip, and that the "V" on each clip is up.
  5. Verify that a resistance is displayed.
    Informational PurposesAn informational icon, calling your attention
    Note
    If " -.- - - - " (no value) is displayed, check the lead connections to the resistance meter and the how the clips attach together.
  6. Press and hold the 0ADJ button to start the zero adjust operation.
    Informational PurposesAn informational icon, calling your attention
    Note
    The text "0 ADJ" blinks in the upper right corner of the resistance meter's display.
  7. Approximately 2 seconds later, the resistance meter beeps and "0 ADJ" is now constant.
    Informational PurposesAn informational icon, calling your attention
    Note
    If " FAiL " is displayed, check the clips, the leads, and the connection to the resistance meter, and repeat from step 3.
  8. Detach the clips from each other and unplug the leads from the resistance meter.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Do not change the range, otherwise the resistance meter must be zero adjusted again.
  9. Plug the Hioki 9461 test probe leads into the resistance meter.
    Informational PurposesAn informational icon, calling your attention
    Note
    Align the arrows of the lead connectors to the arrows on the resistance meter.
  10. The resistance meter is now ready to measure resistance. Return to the procedure that required the zero adjust to be performed.

Zero Adjust With Resistance Block

  1. Power on the Hioki resistance meter, and allow a few minutes for it to thermally stabilize.
  2. Plug the Hioki 9461 test probe leads into the resistance meter.
    Informational PurposesAn informational icon, calling your attention
    Note
    Both the positive (red) and negative (black) lead connectors have arrows or marks that align to arrows on the resistance meter.
  3. Use the up arrow and down arrow buttons to set the resistance meter to the 3mΩ range.
  4. Press and release the 0ADJ button to start the zero adjust operation.
    Informational PurposesAn informational icon, calling your attention
    Note
    The text "0 ADJ" blinks in the upper right corner of the resistance meter's display.
  5. Touch the probes to the indentations on either side of the resistance block special tool, and hold the probes vertically.
  6. Verify that a resistance is displayed.
    Informational PurposesAn informational icon, calling your attention
    Note
    If " -.- - - - " (no value) is displayed, check the lead connections to the resistance meter and the how the probe tips contact the resistance block.
  7. Approximately 2 seconds later, the resistance meter beeps and "0 ADJ" is now constant.
    Informational PurposesAn informational icon, calling your attention
    Note
    If "FAiL" is displayed, check the probe tips, the leads, and the connection to the resistance meter, and repeat from step 3.
  8. Remove the probes from the resistance block special tool.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Do not change the range, otherwise the resistance meter must be zero adjusted again.
  9. The resistance meter is now ready to measure resistance. Return to the procedure that required the zero adjust to be performed.