28/09/2023 02:27:18

Harness - Lower Dash (Remove and Replace)

FRT No: 17100802

  • 2023-09-28: Fixed corrupted cross-references in procedure.

Removal

  1. Remove the cross car beam. See Cross Car Beam (Remove and Replace).
  2. Remove the body control module. See Module - Body Controller - BCM (Remove and Replace).
  3. Remove the RH sun visor. See Sun Visor - LH (Remove and Replace).
  4. Remove the RH upper B-Pillar trim panel. See Trim - B-Pillar - Upper - LH (Remove and Install).
  5. Remove the fastener that secures the RH middle section of the headliner
  6. Disconnect the lower dash harness connectors on the RH A-Pillar.
  7. If equipped, disconnect the electrical connector from the RH panoramic roof motor.
  8. Disconnect the lower dash harness connectors on the RH front door. Release any clips that secure the lower dash harness.
  9. Release the lower dash harness ground nut on the RH A-Pillar. Remove the lower dash harness from the A-Pillar.
  10. Disconnect all electrical connectors that connect the lower dash harness to the RH body harness.
  11. Disconnect the lower dash harness electrical connectors from the thermal controller.
  12. Disconnect the lower dash harness electrical connectors from the HVAC controller.
  13. Disconnect the lower dash harness electrical connectors from the PTC heater.
  14. Remove the HVAC blower motor. See Blower Motor - HVAC (Remove and Replace).
  15. If equipped, remove the air suspension module. See Module - Air Suspension - ECU (Remove and Install).
  16. Disconnect the electrical connectors from the passive safety restraint control module (PSRCM).
  17. Release the lower dash harness ground nut from behind the air suspension module. Release any clips that secure the lower dash harness.
  18. Disconnect the acceleration pedal electrical connector. Release any clips that secure the lower dash harness.
  19. Disconnect the acceleration pedal electrical connector. Release any clips that secure the lower dash harness.
  20. Disconnect all electrical connectors that connect the lower dash harness to the LH body harness.
  21. Disconnect the antenna connector from the lower dash harness to the LH body harness.
  22. If equipped, disconnect the electrical connector from the LH panoramic roof motor. Release any clips that secure the lower dash harness.
  23. Disconnect the lower dash harness connectors on the LH front door. Release any clips that secure the lower dash harness.
  24. Remove the particulate filter. See Filter - Particulate (Remove and Replace).
  25. Disconnect all electrical connectors from the 12V battery mounted fusebox.
  26. Remove the RH shock tower brace. See Shock Tower Brace - LH (Remove and Replace).
  27. If equipped, release the fasteners that secure the air suspension reservoir and move it out of the working area.
  28. Release the fasteners that secure the front fuse box to the cross car beam.
  29. Disconnect the electrical connectors that connect the lower dash harness to the LH front harness. Release any clips that secure the lower dash harness.
  30. Disconnect the electrical connectors from the HV Battery heater. Release any clips that secure the lower dash harness.
  31. Disconnect the electrical connectors from the DCDC converter. Release any clips that secure the lower dash harness.
  32. Disconnect the electrical connector from battery coolant pump 1. Release any clips that secure the lower dash harness.
  33. If equipped, disconnect the electrical connector from the forward junction box.
  34. If equipped, disconnect the front RH ride height sensor. Release any clips that secure the lower dash harness.
  35. Disconnect the RH side marker light. Release any clips that secure the lower dash harness.
  36. Release the nuts that secure the lower dash harness cover. Release any clips that secure the lower dash harness.
  37. Release the fasteners that secure the coolant reservoir.
  38. Disconnect the electrical connector from the compressor.
  39. Disconnect the ground strap from the compressor.
  40. Disconnect the coolant level sensor.
  41. Disconnect the intelligent battery sensor. Release any clips that secure the lower dash harness.
  42. Disconnect the electrical connector from battery coolant pump 2. Release any clips that secure the lower dash harness.
  43. If equipped, disconnect the electrical connector from the vacuum brake booster.
  44. If equipped, disconnect the electrical connector from the TXV valve.
  45. Disconnect the electrical connector from the RH condenser fan. Release any clips that secure the lower dash harness.
  46. Disconnect the electrical connector from the RH headlight. Release any clips that secure the lower dash harness.
  47. Disconnect the electrical connector from the RH headlight. Release any clips that secure the lower dash harness.
  48. If equipped, disconnect the front wheel speed sensor.
  49. Remove the lower dash harness from the vehicle.

Installation

Installation is reverse of removal, except for the following:
  • Transfer the fuse box relays from the old harness to the new one.
  • Perform a panoramic roof calibration.
  • Test drive the vehicle.