Aura, Outlook 2007

Electronic Control Module

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Operation



The Engine Control Module (ECM) interacts with many emission related components and systems, and monitors the emission related components and systems for deterioration. OBD II diagnostics monitor the system performance and a diagnostic trouble code (DTC) sets if the system performance degrades.

Removal & Installation



2.4L Engine

NOTE
Turn the ignition OFF when installing or removing the control module connectors and disconnecting or reconnecting the power to the control module (battery cable, powertrain control module (PCM)/engine control module (ECM)/transaxle control module (TCM) pigtail, control module fuse, jumper cables, etc.) in order to prevent internal control module damage.


NOTE
Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables, or when charging the vehicle battery.


NOTE
In order to prevent any possible electrostatic discharge damage to the control module, do no touch the connector pins or the soldered components on the circuit board.


NOTE
Remove any debris from around the control module connector surfaces before servicing the control module. Inspect the control module connector gaskets when diagnosing or replacing the control module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the control module.


NOTE
The replacement control module must be programmed. Refer to the module-s installation guide.


NOTE
It is necessary to record the remaining engine oil life. If the replacement module is not programmed with the remaining engine oil life, the engine oil life will default to 100 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5 000 km (3,000 mi) from the last engine oil change.

  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Disconnect the body wiring harness electrical connector from the Engine Control module (ECM).
  6.  
  7. Disconnect the engine wiring harness electrical connectors from the ECM.
  8.  
  9. Remove the engine wiring harness clips from the ECM bracket.
    NOTE
    Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables or when charging the vehicles battery.

  10.  
  11. Gently lift the ECM retainers up, disengaging the retainers from the ECM.
  12.  
  13. Tilt the ECM towards the engine and remove the ECM (2) from the bracket.
  14.  

To install:

  1. Set the ECM into the bottom of the bracket and push the ECM towards the battery until the ECM snaps into place and is secured by the retainers.
  2.  
  3. Connect the engine wiring harness electrical connectors to the ECM.
  4.  
  5. Install the engine wiring harness clips to the ECM bracket.
  6.  
  7. Connect the body wiring harness electrical connector to the ECM.
  8.  
  9. Connect the negative battery cable.
  10.  

3.5L And 3.6L Engines

NOTE
Turn the ignition OFF when installing or removing the control module connectors and disconnecting or reconnecting the power to the control module (battery cable, powertrain control module (PCM)/engine control module (ECM)/transaxle control module (TCM) pigtail, control module fuse, jumper cables, etc.) in order to prevent internal control module damage.


NOTE
Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables, or when charging the vehicle battery.


NOTE
In order to prevent any possible electrostatic discharge damage to the control module, do no touch the connector pins or the soldered components on the circuit board.


NOTE
Remove any debris from around the control module connector surfaces before servicing the control module. Inspect the control module connector gaskets when diagnosing or replacing the control module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the control module.


NOTE
The replacement control module must be programmed. Refer to the module-s installation guide.


NOTE
It is necessary to record the remaining engine oil life. If the replacement module is not programmed with the remaining engine oil life, the engine oil life will default to 100 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5 000 km (3,000 mi) from the last engine oil change.

  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Slide the lever locks to the up position in order to release the engine wiring harness electrical connectors.
  6.  
  7. Disconnect the engine wiring harness electrical connectors from the engine control module (ECM).
  8.  
  9. Release the retaining tab located in the battery tray using a small screwdriver or other suitable tool.
  10.  
  11. Remove the ECM by lifting upward after releasing the tab.
  12.  

To install:

  1. Slide the ECM into the bracket on the battery tray.
  2.  
  3. Push down on the ECM until the retaining tab snaps into place.
  4.  
  5. Connect the engine wiring harness electrical connectors to the ECM.
  6.  
  7. Slide the lever locks to the down position in order to engage the engine wiring harness electrical connectors.
  8.  
  9. Connect the negative battery cable.
  10.  

 
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