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Home >> Fiat >> 2018 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 ((Power Inverter Module (PIM) - Electrical Diagnostics - 500 - Electric)) >> Standard Procedure >> Isolation Measurement Of 3 Phase Wiring Harness

Isolation Measurement Of 3 Phase Wiring Harness

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WARNING:

On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury.

Refer to HIGH-VOLTAGE POWER DOWN PROCEDURE to perform the High Voltage Power Down procedure.

NOTE:

Any time the Power Inverter Module (PIM) cover is removed, it MUST BE REPLACED due to a non reusable seal.

  1. Disconnect 3-Phase Connectors from e-Motor and PIM.
  2. Connect measuring adapter on the e-Motor side of the cable.
  3. Using a qualified isolation tester take 3 measurements: measure isolation resistance of U/V/W to shielding.
  4. Wait for 10 seconds between measurements.
  5. If measured values are less than 50M?, then replace 3 phase Wiring Harness.
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