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Home >> Chevrolet >> 2012 >> Orlando LT, Automatic Trans >> Repair and Diagnosis >> Electrical >> Starter >> Battery, Charging System And Starting System >> Repair Instructions >> Engine Control Module Wiring Harness Replacement (2.4L LAF) >> Installation Procedure
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Installation Procedure

  1. Position the engine wiring harness to the vehicle.
  2. Raise the vehicle.
    3. Fig 1: Engine Wiring Harness And Connectors
    GM2543379Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  3. Install the wiring harness ground cable (1) and the wiring harness ground cable bolt (7) and tighten to 9 N.m (80 lb in).
  4. Connect the starter wiring harness plug (6) and clip in the wiring harness clip (4).
  5. Connect the engine oil pressure switch wiring harness plug (3) and the knock sensor wiring harness plug (2).
  6. Connect the crankshaft position sensor wiring harness plug (5).
    7. Fig 2: Generator Wiring Harness Plug And Air Conditioning Wiring Harness Plug
    GM2577097Courtesy of GENERAL MOTORS COMPANY
  7. Connect the generator wiring harness plug (1) and the air conditioning wiring harness plug (2).
    8. Fig 3: Heated Oxygen Sensor Wiring Harness
    GM2557131Courtesy of GENERAL MOTORS COMPANY
  8. Connect the heated oxygen sensor wiring harness plug (2).
  9. Clip in the 4 wiring harness clips (1, 3).
  10. Connect the heated oxygen sensor wiring harness plug (4) and clip in the 4 wiring harness clips (1, 3).
  11. If equipped, install the engine compartment insulator. Refer to Front Compartment Insulator Replacement .
  12. Lower the vehicle.
    13. Fig 4: Engine Wiring Harness And Connectors
    GM2557130Courtesy of GENERAL MOTORS COMPANY
  13. Connect the engine coolant temperature sensor wiring harness plug (5) and clip in the wiring harness (6).
  14. Install the wiring harness ground cable (4) and the wiring harness ground cable bolt (3) and tighten to 9 N.m (80 lb in).
  15. Connect the exhaust camshaft position sensor wiring harness plug (7).
  16. Connect the evaporative emission canister purge valve wiring harness plug (2) and the intake camshaft position sensor wiring harness plug (8).
  17. Clip in the 3 wiring harness clips (1) to the fuel pump cover.
    18. Fig 5: Engine Wiring Harness And Connectors
    GM2557129Courtesy of GENERAL MOTORS COMPANY
  18. Connect the fuel pump wiring harness plug (2).
  19. Clip in the wiring harness clip (4) from the intake manifold.
  20. Connect the engine wiring harness (1) to the multiport fuel injector wiring harness plug.
  21. Connect the throttle body wiring harness plug (5) and the manifold absolute pressure sensor wiring harness plug (3).
  22. Install the air cleaner outlet rear duct. Refer to Air Cleaner Outlet Rear Duct Replacement .
    23. Fig 6: Wiring Harness Plugs And Clips
    GM2557128Courtesy of GENERAL MOTORS COMPANY
  23. Connect the 4 ignition coil wiring harness plugs (4, 5).
  24. Connect the camshaft position actuator intake/exhaust solenoid valve wiring harness plug (6).
  25. Clip in the 4 wiring harness clips (2, 3) and connect the mass airflow wiring harness plug (1).
  26. Install the intake manifold cover. Refer to Air Cleaner Outlet Rear Duct Replacement .
    27. Fig 7: Wiring Harness Clips
    GM2538114Courtesy of GENERAL MOTORS COMPANY
  27. Connect the transmission wiring harness plug (2) to the transmission.
  28. Clip in the 4 wiring harness clips (1).
    29. Fig 8: Wiring Harness Ground Cable
    GM2506210Courtesy of GENERAL MOTORS COMPANY
  29. Connect the wiring harness connection adapter plug (4).
  30. Install the wiring harness plug (1) to the front compartment fuse block housing.
  31. Install the wiring harness ground cable (3) and install the wiring harness ground cable nut (2) and tighten to 9 N.m (80 lb in).
  32. Install the front compartment fuse block. Refer to Front Compartment Fuse Block Replacement .
  33. Install the battery tray. Refer to Battery Tray Replacement (without Start/Stop System) .
    34. Fig 9: ECM Wiring Harness Plugs
    GM2557127Courtesy of GENERAL MOTORS COMPANY
  34. Connect the 3 wiring harness (2) to the engine control module (1).
  35. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (without Start/Stop System) .
  36. If equipped, install the battery cover. Refer to Battery Cover Replacement .
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