17/02/2022 01:50:17

Heater - Front PTC (Remove and Replace)

Correction Code 18106302

Warning IconA warning icon, calling your attention to a possibly risky situation
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. Open both front doors and lower the windows.
  2. Open the hood.
  3. Move the RH seat rearward for access.
  4. Remove the glove box (refer to procedure).
  5. Remove the RH center console closeout extension (refer to procedure).
  6. Remove the underhood storage unit (refer to procedure).
  7. Perform the vehicle electrical isolation procedure (refer to procedure).
  8. Remove the cowl screen panel (refer to procedure).
  9. Remove the HEPA filter duct (refer to procedure).
  10. Disconnect the PTC heater HV cable connector from the forward junction box.
  11. Push the HV cable grommet through the bulkhead towards the interior of the vehicle.
  12. Carefully pull the HV cable through the bulkhead into the cabin of the vehicle.
  13. Remove the front passenger's knee air bag (refer to procedure).
  14. Remove the passenger's knee air bag bracket:
    1. Remove the screws (x3) that attach knee airbag bracket to the instrument panel carrier (torque 2 Nm).
    2. Remove the bolts (x2) that attach the LH side of the bracket to the instrument panel (torque 10 Nm).
    3. Remove the bolts (x2) that attach the rear of the bracket to the instrument panel (torque 10 Nm).
      Informational PurposesAn informational icon, calling your attention
      Note
      Components have been removed in this graphic to aid clarity.
  15. Remove the screw (torque 1 Nm) that attaches the RH footwell duct to the HVAC assembly, and then remove the RH footwell duct.
  16. Remove the screws (x3) that secure the PTC heater to the front HVAC assembly (torque 1.2 Nm).
    Informational PurposesAn informational icon, calling your attention
    Note
    Components have been removed in this graphic to aid clarity.
  17. Disconnect the PTC heater logic connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    Components have been removed in this graphic to aid clarity.
  18. Remove the PTC heater from the HVAC assembly and remove it from the vehicle.

Installation

Installation procedure is the reverse of removal, except for the following:
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CAUTION
Replace all patchbolt(s).
Informational PurposesAn informational icon, calling your attention
Note
Later revisions of the PTC heater come with a white KET connector. This connector is fully backwards compatible and does not need to be replaced by the brown KET connector.
  • Clean the interior of the HVAC casing prior to assembly.
  • Calibrate the falcon doors from the MCU.
  • Reinstall the vehicle firmware. See Firmware Reinstall - Touchscreen.