OEM 2009 Chevrolet Cobalt Engine Control Module

2009 Chevrolet Cobalt Parts Questions & Experts Answers

• Q: Why is performing a CPPS learn procedure crucial when replacing or reprogramming the Engine Control Module or the clutch pedal position sensor on 2009 Chevrolet Cobalt?

  A: The cpps learn procedure needs to be executed after installing or programming either the ecm or clutch pedal position sensor because neglecting this process exposes users to risk through vehicle damage or injury when the Starter motor actuates while the transmission is engaged. The prevention of control module damage requires users to turn off the ignition whenever they handle control module connectors or disconnect or reconnect power to the Battery Cable as well as pcm/ecm/tcm pigtail, control module fuse and jumper cables. Touching soldered components on the circuit board along with the connector pins on control modules should be avoided because it leads to electrostatic discharge damage. The control module metal casing must never come into contact with battery voltage during servicing. Service personnel must remove all debris surrounding the control module connector surfaces before checking that the connector gaskets are correctly positioned to stop contaminants from entering the system. Programming the replacement control module is essential for proper execution and to correctly set the remaining engine oil life measurement because lack of programming leads to 100 percent default which forces an oil change after 5,000 km (3,000 mi) since the previous change. The removal of the ecm requires a scan tool for measuring engine oil percentage followed by disconnecting the Battery Cable and control module cover removal before disconnecting both harnesses from the ecm. Pressing the retaining tab will allow you to remove the ecm from the underhood junction block bracket. The installation process starts by mounting the ecm onto the underhood junction block bracket then reattaching both engine wiring harness and small ecm harness connectors and finishing with restoring the negative Battery Cable. First connect the ecm with the body wiring harness electrical connector before installing the Engine Control Module cover then developing a program for the ecm. Perform the clutch pedal position sensor learn procedure before installation when the vehicle has a manual transaxle.