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Home >> Fiat >> 2019 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Electric Powertrain System - 500 - Electric) >> Electric Vehicle Battery System >> Module, Onboard Charging (OBCM) >> Removal

Module, Onboard Charging (OBCM): Removal

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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.

WARNING:

When performing any repairs that involve contact with high voltage components or systems, the technician performing repairs on the vehicle must verify that the system remains powered down during high voltage repairs.

  • This must be done by removing the service disconnect.
  • The high voltage power down procedure must also be performed to ensure that the vehicle is properly powered down.
  • The technician must know the whereabouts of the service disconnect throughout the repair.
  • The technician must ensure that no one reconnects the service disconnect while service is being performed.
  • The technician must recheck that the service disconnect has not been reinstalled in cases where the vehicle was unattended.

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

  1. Disconnect the negative 12-volt battery cable.
  2. Power down the high-voltage system. Refer to HIGH-VOLTAGE POWER DOWN PROCEDURE .
    GC0157578Courtesy of CHRYSLER GROUP, LLC
  3. Remove the two onboard charging module (OBCM) connector shield nuts (1) and remove the connector shield.
    GC0157797Courtesy of CHRYSLER GROUP, LLC
  4. Using suitable hose-pinching pliers, clamp-closed the three coolant hoses at the OBCM.
  5. Release the three OBCM coolant hose clamps (1) and disconnect the hoses.
    NOTE:

    Not all coolant will drain from the OBCM.

  6. If all coolant must be removed, as in the case of an OBCM replacement, use a shop air supply hose connected to the OBCM inlet port (1). Adjust the air pressure regulator to not exceed 100 kPa (15 psig) and force the coolant from the OBCM outlet port (2).
    GC0157619Courtesy of CHRYSLER GROUP, LLC
  7. Disconnect the three OBCM high-voltage electrical connectors (1), and the OBCM 12-volt electrical connector (2).
    CAUTION:

    Do not allow coolant to come in contact with any high voltage component electrical connections. Engine coolant will create a conductive path and cannot be effectively removed resulting in a loss of isolation and replacement of the contaminated high voltage component.

    GC0157789Courtesy of CHRYSLER GROUP, LLC
  8. Remove the six OBCM bolts (1).
  9. Remove the OBCM (2).