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Home >> Chevrolet >> 2012 >> Orlando LS, Automatic Trans >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Repair Instructions >> Engine Control Module Wiring Harness Replacement (2.0L Diesel LNP) >> Removal Procedure
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Removal Procedure

  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (without Start/Stop System) .
    2. Fig 1: Engine Control Module Wiring Harness Plugs
    GM2506324Courtesy of GENERAL MOTORS COMPANY
  2. Disconnect the 2 engine control module wiring harness plugs (1) from the engine control module (2).
    3. Fig 2: Engine Control Module
    GM2506326Courtesy of GENERAL MOTORS COMPANY
  3. Remove the engine control module bracket (2) along with the engine control module (1) from the battery tray (3).
  4. Remove the battery tray. Refer to Battery Tray Replacement (without Start/Stop System) .
  5. Remove the windshield washer solvent container filler tube. Refer to Windshield Washer Solvent Container Filler Tube Replacement.
  6. Remove the front compartment fuse block. Refer to Front Compartment Fuse Block Replacement.
  7. Remove the engine sight shield. Refer to Engine Sight Shield Replacement.
    8. Fig 3: Wiring Harness Ground Cable
    GM2506210Courtesy of GENERAL MOTORS COMPANY
  8. Remove the wiring harness ground cable nut (2) and remove the wiring harness ground cable (3).
  9. Remove the wiring harness plug (1) in top direction from the front compartment fuse block housing.
  10. Disconnect the wiring harness connection adapter plug (4).
  11. Remove the 2 wiring harness clips from the drivetrain and front suspension frame front inner support and from the charge air cooler outlet hose.
    12. Fig 4: Engine Wiring Harness And Connectors
    GM2511649Courtesy of GENERAL MOTORS COMPANY
  12. Disconnect the exhaust temperature sensor wiring harness plug (5).
  13. Unclip the heated oxygen sensor wiring harness plug (3) from the retainer clip (4) and disconnect the heated oxygen sensor wiring harness plug (3).
  14. Disconnect the exhaust pressure differential sensor hose wiring harness plug (2).
  15. Disconnect the camshaft position sensor wiring harness plug (1).
    16. Fig 5: Engine Wiring Harness And Connectors
    GM2511650Courtesy of GENERAL MOTORS COMPANY
  16. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  17. Remove the 2 charge air cooler inlet air hose bolts (7) from the 2 charge air cooler inlet air hose nuts (5). Hang the charge air cooler inlet air hose (6) aside.
  18. Disconnect the exhaust temperature sensor wiring harness plug (2).
  19. Disconnect the exhaust temperature sensor wiring harness plug (4) and unclip the wiring harness clip (3) from the steering pump.
  20. Disconnect the turbocharger wastegate actuator wiring harness plug (8).
  21. Disconnect the mass air flow sensor wiring harness plug (1) and remove the wiring harness clip from the air cleaner housing.
    22. Fig 6: Engine Wiring Harness And Connectors
    GM2511653Courtesy of GENERAL MOTORS COMPANY
  22. Disconnect the oil pressure sensor wiring harness plug (2).
  23. Remove the wiring harness clip (3) from the charge air control vacuum hose.
  24. Remove the 2 wiring harness channel bolts (1) from the wiring harness channel.
  25. Disconnect the intake air pressure/temperature sensor wiring harness plug (5).
  26. Disconnect the 2 wiring harness clips (4) from the oil filter assembly and from the intake manifold.
    27. Fig 7: Backup Lamp Switch
    GM2511654Courtesy of GENERAL MOTORS COMPANY
  27. Disconnect the backup lamp switch wiring harness plug from the transmission.
  28. Remove the wiring harness clip (1) from the transmission.
  29. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  30. Remove the engine compartment insulator. Refer to Front Compartment Insulator Replacement.
    31. Fig 8: Engine Wiring Harness And Connectors
    GM2511655Courtesy of GENERAL MOTORS COMPANY
  31. Disconnect the 2 knock sensor wiring harness plugs (3, 6).
  32. Disconnect the generator wiring harness plug (4).
  33. Disconnect the starter wiring harness plug (7).
  34. Disconnect the vacuum solenoid valve wiring harness plug (1) and the vacuum solenoid valve wiring harness plug (2).
  35. Remove the 2 wiring harness clips (5) from the 2 brackets.
    36. Fig 9: Crankshaft Position Sensor Wiring Harness Plug And Throttle Body Wiring Harness Plug
    GM2511656Courtesy of GENERAL MOTORS COMPANY
  36. Disconnect the crankshaft position sensor wiring harness plug (3).
  37. Disconnect the throttle body wiring harness plug (1).
  38. Unclip the wiring harness clip (2) from the charge air cooler outlet hose.
    39. Fig 10: Engine Oil Level Indicator Wiring Harness Plug And Air Conditioning Wiring Harness Plug
    GM2511658Courtesy of GENERAL MOTORS COMPANY
  39. Disconnect the air conditioning wiring harness plug (1) and the engine oil level indicator wiring harness plug (2). Hang the wiring harness aside.
  40. Lower the vehicle.
    41. Fig 11: Charge Air Cooler Outlet Hose
    GM2511669Courtesy of GENERAL MOTORS COMPANY
  41. Remove the front charge air cooler outlet hose bolt (2) from the wiring harness bracket.
  42. Remove the front charge air cooler outlet hose clamp (4) from the rear charge air cooler outlet hose (3). Hang the front charge air cooler hose (1) aside.
    43. Fig 12: Engine Wiring Harness And Connectors
    GM2511659Courtesy of GENERAL MOTORS COMPANY
  43. Unclip and disconnect the glow plug wiring harness plug (2) from the engine wiring harness bracket.
  44. Disconnect the fuel pump wiring harness plug (3)
  45. Disconnect the engine coolant temperature sensor wiring harness plug (5).
  46. Unclip the 4 wiring harness clips (1, 4) from the wiring harness bracket.
    47. Fig 13: Engine Wiring Harness And Connectors
    GM2511661Courtesy of GENERAL MOTORS COMPANY
  47. Disconnect the vacuum solenoid valve wiring harness plug (8).
  48. Disconnect the exhaust gas recirculation valve wiring harness plug (9).
  49. Disconnect the intake actuator valve wiring harness plug (7).
  50. Disconnect the fuel injection rail pressure sensor wiring harness plug (3).
  51. Disconnect the 4 glow plug wiring harness plugs (5).
  52. Disconnect the 4 fuel injector wiring harness plugs (1).
  53. Unclip the 4 engine wiring harness clips (2, 4) from the camshaft cover.
  54. Unclip the engine wiring harness channel (6) in top direction from the 3 exhaust gas recirculation cooler brackets.
  55. Remove the engine wiring harness from the vehicle.
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