SRX 2006-2007

Electronic Control Module

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Operation



The Electronic Control Module (ECM) performs many functions on your vehicle. The module accepts information from various sensors and computes the required fuel flow rate necessary to maintain the correct amount of air/fuel ratio throughout the entire engine operational range and controls the shifting of the transmission.

Based on the information that is received and programmed into the ECM's memory, the ECM generates output signals to control relays, actuators and solenoids. The module automatically senses and compensates for any changes in altitude when driving your vehicle.

Removal & Installation




NOTE
It is necessary to record the remaining engine oil and transmission fluid 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 must be changed at 3,000 miles (5,000km) from the last oil change. The transmission fluid life will default to 100 percent as well. If the replacement module is not programmed with the remaining transmission fluid life, the fluid must be changed at 50,000 miles (83,000km) from the last change. A scan tool must be used to retrieve the ECM data. This information must be transferred to the new ECM.

  1. Disconnect the negative battery cable.
  2.  
  3. Disengage the harness connections from the ECM.
  4.  
  5. Disengage the retainer tabs securing the ECM to the bracket. Remove the ECM from the engine compartment.
  6.  
  7. Installation is the reverse of removal. Program the ECM.

    Click image to see an enlarged view

    Fig. ECM mounting tabs

  8.  

Testing



Service of the ECM should consist of either replacement of the ECM or programming of the Electrically Erasable Programmable Read Only Memory (EEPROM). If the diagnostic procedures call for the ECM to be replaced, the replacement ECM should be checked to ensure that the correct part is being used. If the correct part is being used, remove the faulty ECM and install the new service ECM

 
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