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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 ((Power Inverter Module (PIM) - Electrical Diagnostics - 500 - Electric)) >> Standard Procedure >> Check Electrical Resistance Between E-Motor Phases

Check Electrical Resistance Between E-Motor Phases

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
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.

NOTE: When performing any key-on procedure you must charge the 12 volt battery with a setting of 20 amps minimum or the High Voltage Battery could discharge below recommended manufacture specifications and destroy the battery cells. 

Refer to ELECTRIC VEHICLE CONTROL SYSTEM, STANDARD PROCEDURE to perform the High Voltage Power Down procedure.

  1. Disconnect 3-phase Wiring Harness from the e-Motor.
  2. Use a qualified micro Ohm measurement instrument to measure the resistance value between the three pins (U/V/W) of the e-Motor, 3 measurements in total (U-V, U-W, V-W).
  3. If measured resistance value is not between 27.36m Ohms and 30.24m Ohms, replace e-Motor in accordance with the service information.
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