19/06/2024 01:14:00

Coolant Heater - Electric - Battery (Remove and Replace)

Correction Code 18307302

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Warning
Only technicians who have been trained in High Voltage (HV) Awareness and have completed all required certification courses (if applicable) are permitted to perform this procedure. Proper Personal Protective Equipment (PPE) and insulating HV gloves with a minimum rating of class 0 (1000V) must be worn any time a high voltage cable is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information.

Removal

  1. Remove the HEPA filter duct. See Duct - HEPA Filter (Remove and Replace).
  2. Remove the HV Battery. See HV Battery (AWD) (Remove and Install).
  3. Lower the vehicle.
  4. Lift the rear cowl for access.
  5. Disconnect the gray connector from the forward junction box (FJB).
  6. Maneuver the electric coolant heater cable past the HV FDU cable towards the bottom of the vehicle.
  7. Lift the vehicle.
  8. Install a coolant clamp on the electric coolant heater to DC-DC hose.
  9. Remove the bolt and nut (torque 7 Nm) that attach the electric coolant heater to the body.
  10. Position a coolant drain container under the front of the vehicle.
  11. Remove the lower coolant hose from the electric coolant heater.
  12. Release the clips (x2) that attach the electric coolant heater cable to the bulkhead.
  13. Remove the nut (torque 7 Nm) and clip that attach the FDU HV cable to the electric coolant heater.
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    Note
    This step is not applicable for Raven vehicles.
  14. Rotate the DC-DC coolant hose clamp 90° upwards.
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    Note
    This is to obtain clearance for the battery heater, and only applies to Raven vehicles. Re-adjust the hose clamp pliers as needed.
  15. Disconnect the electric coolant heater logic connector.
  16. Release the electric coolant heater connector from the bracket.
  17. Remove the electric coolant heater bracket.
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    Note
    3x bolts (non-Raven) or 2x bolts (Raven), torque 8 Nm. Move battery heater as needed.
  18. Release the hose clamp, and then remove the electric coolant heater from the vehicle.
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    Note
    Take care not to damage the brake lines.

Installation

Installation procedure is the reverse of removal, except for the following: