GM 12678511
PCM

The service procedure for engine control modules (ECM) can be fulfilled with either new ecm installation or eeprom programming. You must inspect the ecm before replacement but only when diagnostic tests indicate an ecm switch is needed. Replace the new service ecm as the first step after confirming the faulty ecm condition. You must close the engine through ignition shutdown before any task involving control module connectors or power disconnection to stop internal module destruction. The control module suffers damage when its metal frame comes into direct contact with battery electrical charge so avoid this situation in service operations and with battery booster cables and vehicular battery charging. Touching the circuit board's connector pins or soldered components will result in electrostatic damage therefore avoid doing so. Before servicing the control module connector you must remove all debris then verify that the installed gaskets are correct since they block contaminant entry. A programming process applies to the new control module and the broadcast code along with production ecm number must transfer onto the service ecm label for complete vehicle identification from start to end. A new unprogrammed service ecm shows dtc p0602 when the ecm fails to program correctly or malfunctions. All internal parts in this ecm should remain unaddressed by users and it should be avoided to open it. The replacement process requires documenting remaining engine oil life because lack of proper programming at the new module will reset it to 100 percent performing an oil change within 5000 km (3,000 mi) since the last maintenance. The removal process begins by using a scan tool to record the current engine oil life percentage then disconnecting the battery cable followed by removal of the left sheet metal diagonal brace and loose air cleaner cover from the air cleaner assembly before disconnection of engine harness electrical connectors from the ecm and ecm extraction from the air cleaner cover. The engine harness electrical connectors must be connected to the ecm before setting the ecm on top of the air cleaner cover and installing the air cleaner assembly cover. Replace the air cleaner cover onto the air cleaner assembly and tighten its cover screws to 4 n.m (35 lb in). Reinstall the left sheet metal diagonal brace followed by reconnecting the negative battery cable. Programming of the eeprom is necessary when installing a new ecm.

The Engine Control Module (ECM) replacement process begins by cutting power to the system through the negative Battery Cable disconnect and moving past engine ignition status. A scan tool should be used to retrieve engine oil and automatic transaxle fluid life percentages for recording purposes. The first step involves separating the engine harness electrical connector from the mass air flow/intake air temperature (MAF/IAT) sensor as well as the positive crankcase ventilation (PCV) fresh air tube quick connect fitting from the air duct and the secondary air injection (AIR) pump inlet tube quick connect fitting from the air cleaner upper housing. Remove the Throttle Body outlet duct by loosening it before removing the clips from the lower housing and front tabs from the upper housing to take away the air cleaner upper housing. The process continues with removing electrical connectors from the ecm after disconnecting lever locks at the ecm. Lastly, the technician pulls out the ecm from the air cleaner lower housing. The installation of the new ecm requires caution to check whether the air filter/ecm housing assembly contains any debris or if the maf/iat sensor inlet screen shows damage alongside examining the housing assembly and intake air duct for overall integrity. After inserting the new ecm into the lower air cleaner housing users should connect the engine harness electrical connectors while simultaneously locking the lever contacts. The installation requires the air cleaner upper housing to lock its front tabs with the lower housing before securing the lower housing clips. Secure the air cleaner outlet duct to the Throttle Body with a clamp which should be tightened to 3 n.m (27 lb in). The engineer should couple the air pump inlet tube quick connect fitting to the upper housing of the air cleaner while using the pcv fresh air tube quick connect fitting to attach to the air ducting. The engine harness electrical connector should be reattached to the maf/iat sensor while reconnecting the negative Battery Cable. Ryan must program the ecm after checking that the setup is accurate.

Engine control module (ECM) service requires ECM component replacement or EEPROM programming and when replacement is needed check for the correct part selection. The process of installing and removing control module connectors together with power disconnects must always have the ignition set to OFF to safeguard the internal components from damage. Never let the metal case of the control module touch battery voltage during service since this will lead to damage. Guard against electrostatic damage by refraining from touching connector pins or soldered components of the circuit board and ensuring all dust and dirt is cleared from around the control module connector surfaces. An inspection of the control module connector gaskets will confirm their proper installation status to block contaminant access. Failure to record engine oil lifetime and automatic transmission fluid lifetime beforehand will cause default percentages to set engine oil change requirements at 5000 km (3,000 mi) and automatic transmission fluid requirements at 83000 km (50,000 mi) from the last change schedule. Begin by obtaining and writing down the remaining engine oil and automatic transmission fluid life with a scan tool before you take out the right front wheelhouse filler panel to disconnect the ECM electrical connectors and take off its fasteners. Installation requires users to place the ECM on the ECM bracket and fasten retaining fasteners to 3.0 N.m (27 lb in). Users must reconnect electrical connectors afterward then reinstall the right front wheelhouse filler panel. When installing a new ECM users must program it.

The first step to replace the Engine Control Module (ECM) involves switching off ignition power because it protects the internal components of both the power connections and control module connectors. It is essential to avoid placing battery voltage on the control module's metal case since this could cause damage along with refraining from touching pins or soldered components to protect from electrostatic discharge. A correct inspection of gaskets and an effective connector surface cleaning must be completed before service to block contaminant access. Note down current engine oil and automatic transmission fluid lifespans because the replacement module needs this information to function otherwise the engine will need immediate oil change at 5000 km (3,000 mi) based on 100% default life and transmission requires fluid change at 83000 km (50,000 mi again based on the same default percentage). Begin the project through a scan tool to retrieve the current engine oil life percentage as well as automatic transmission fluid life percentage for permanent documentation. To proceed with the replacement of the Engine Control Module (ECM) installation begin by taking off the right front wheelhouse filler panel after disconnecting the ecm electrical connectors then remove the fasteners securing the ecm position. To install the ecm position it on the ecm bracket before using retaining fasteners which must reach 3nm (27 lb in) torque value before reconnecting electrical connectors to the ecm then reinstall right front wheelhouse filler panel. Programming the new ecm remains mandatory whenever such a system component gets installed.

Starting the procedure requires ignition shutdown to stop any potential internal module damage while servicing connectors and power lines. The metal case should never come into contact with battery voltage because this leads to damage. Sustain proper handling of the connector pins and soldered components to defend against electrostatic discharge while clearing all dirt from the control module connector faces. Checking control module connector gaskets confirms their correct position is crucial to stop external materials from entering the system. Prior to installing the new module employees need to obtain engine oil life information from a scan tool because otherwise the replacement module will initialize itself to 100% and require an oil change at 5000km (3,000mi) from the last change. The procedure starts with disconnecting the negative Battery Cable followed by Engine Control Module cover removal and seperating the body wiring harness and engine wiring harness electrical connectors from the ecm. Performing steps enables the ecm to detach from underhood junction block bracket through releasing its retaining tab. When installing the ecm users must place it on the underhood junction block bracket before they reconnect the engine wiring harness, small ecm harness connectors and negative Battery Cable and body wiring harness connector. Completion of the procedure requires installation of Engine Control Module cover followed by ecm programming.

Ecm service requires either a replacement of the ecm or eeprom programming services. Check that the installed ecm part matches the original requirement before any replacements. The new service ecm should be installed after you confirm the failed ecm. Vehicle owners must perform a cpps learn procedure both when changing the ecm or reprogramming it as well as when they replace or install the clutch pedal position sensor (CPPS) to prevent accidents and damage to the car when the Starter engages the gear. All operations of control module connectors and power connections need to be done under an off state ignition setting to stop damages occurring inside the control module. When working on the control module allow only the case material to contact battery voltage and refrain from touching both pins and soldered components on the circuit board to resist electrostatic damage. Check that all surfaces on control module connectors are clean from debris before testing the gaskets of connectors to stop contaminants from entering the system. Programming the replacement control module is required with necessary information about engine oil life but if programming is not performed the default setting will trigger a complete oil change needed at 5000 km (3,000 mi) from the last change. Through a scan tool check the ecm for its engine oil life percentage before removing the connectors from the ecm while implementing electrostatic discharge avoidance. The first step to remove the ecm requires disconnecting screws holding the mounting brackets. The installation process begins by inserting the ecm into its mounting bracket where tabs should completely fit before connecting ecm harness connectors to the ecm body. A new ecm requires programming after its installation. Perform the clutch pedal position sensor learn procedure when you have a manual transmission vehicle.

The service procedure for engine control modules (ECM) includes either replacing the module or reprogramming electrically erasable programmable read-only memory (EEPROM). The replacement process begins with verifying that the ecm is the right component. When the ecm fails you should replace it with a new service ecm that requires initial programming since it arrives without installed programming. When the Engine Control Module detects dtc p0602 it means the eeprom is either not programmed or is not functioning correctly. Touching the connector pins or soldered components on the circuit board should be avoided during handling since the ecm connectors must always be turned off before starting maintenance work. The accurate tracking of engine oil lifetime becomes vital for substitution because unprogrammed new modules will lead to complete oil depletion at 5,000 km (3,000 mi) following the previous maintenance. To begin with retrieve engine oil life percentage data by using a scan tool and record this data before disconnecting the negative Battery Cable. Begin by taking out both ecm electrical connectors and then removing the ecm from the air cleaner lower housing when finished with the left front inner fender brace removal and air cleaner assembly separation. The installation process requires placing the ecm into the air lower housing and unified connector connection of ecm electrical wires followed by air assembly replacement and fender brace reinstallation before Battery Cable connection. Implement the correct programming process to program the new ecm.

A proper Engine Control Module (ECM) replacement process starts with turning off the ignition to stop damage during the handling of connectors and power components that include the Battery Cable alongside the powertrain control module (PCM)/Engine Control Module (ECM)/transaxle control module (TCM) pigtail. During servicing avoid placing the control module metal case in contact with battery voltage because this will lead to electrostatic damage in the connector pins and soldered components. A scan tool should be used first to extract the current engine oil life percentage which needs to be recorded for future reference. The service technician must disconnect the negative Battery Cable and eliminate the covers from the ecm/tcm while removing electrical connector from the body harness and electrical connector from the engine harness. To free the ecm from its attachment to the underhood junction block bracket users should pull the retaining tab. Place and lock the ecm onto the underhood junction block bracket through the retaining tab while connecting the engine wiring harness electrical connector and body wiring harness electrical connector to the ecm then put back the ecm/tcm cover. The final procedure involves reconnecting the negative Battery Cable while performing an ecm program to ensure proper recording of engine oil life because failure to do so could default to 100 percent which would result in a required oil change after only 5000 km (3,000 mi) since the previous change.

Replacent control modules for the Engine Control Module (LE5) (2.4L Non Hybrid) should be performed with off ignition to protect system components when working on connections. Touching the control module case to battery voltage should be avoided to protect the module from damage and touching connector pins or soldered components can cause electrostatic discharge. You must eliminate all debris from control module connector surfaces together with a visual check of gaskets to make sure they are properly installed so contaminants stay out of the device. The engine oil life percentage requires recording since programming is necessary after module replacement but non-compliance will reset the oil counter to default 100 percent at 5,000 km (3,000 mi) from the previous change. Use a scan tool to get and document engine oil life percentage before disconnecting the negative Battery Cable as a first step. The procedure requires sliding up the lever locks to release the engine wiring harness electrical connectors then disconnecting the ecm connectors before using a small screwdriver to release the battery tray retaining tab before ecm extraction. The installation process starts by slotting the new ecm into the battery tray bracket while you press down until the retaining tab locks in place followed by reconnecting engine wiring harness electrical connectors and finishing with lever lock engagement by sliding them downward. The next step completes with reconnecting the negative Battery Cable followed by ecm programming when necessary.

The first step for ecm service requires deciding whether the user needs to replace or program the eeprom. Check the ecm to verify the part installation matches requirements before unhooking the negative Battery Cable together with all engine wiring harness electrical connectors attached to the ecm. The procedure to remove the ecm and bracket assembly from intake manifold studs requires first removing ecm bracket nuts and bolts before extracting the ecm and bracket assembly from its position. Remove the ecm by taking off its bracket retainers and then dislodging it from bracket attachment. Before removing the ecm bracket the technician must remove bracket bolts as well as bracket nuts before detaching the bracket from intake manifold studs. Install the ecm bracket onto the intake manifold studs by using bolts and nuts which need to be tightened to 9 n.m (80 lb in). Place the ecm on the bracket while verifying complete retainer engagement. Reinstall the intake manifold studs with bolts and nuts that must be torqued to 9 n.m (80 lb in) when securing them. The wiring harness should be connected to the electrical connectors of ecm and to the negative Battery Cable. Programming the new ecm will be necessary after installation. A scan tool must program the engine oil lifetime estimation into the system to prevent the default 100 percent setting and force an oil change at 5000 km (3,000 mi) from the previous service.

Service of Engine Control Module (ECM) requires an assessment to determine whether you need to replace it or reprogram its eeprom. Validate that the inspected ecm is the appropriate replacement part; replace the ecm if it proves faulty by installing the new service part. The prevention of damage requires users to turn off the ignition during all operations involving control module connectors and power connections. The metal case of the control module should avoid touching battery voltage and handling both connector pins and soldered components to protect from electrostatic discharge damage. You should remove debris from the control module connector surfaces followed by an examination of gaskets to ensure contaminants cannot invade the system. The replacement ecm requires programming followed by a crucial task where service ecm labels need identification with both broadcast code and production ecm number. Step one is to record how much engine oil life remains before taking apart the negative Battery Cable. The installation process starts with detaching the left sheet metal diagonal brace followed by air cleaner cover loosening and removal. Next, disconnect the engine harness electrical connectors from the ecm before lifting off the ecm from the air cleaner cover. The installation process requires users to install the ecm onto the air cleaner cover after connecting the engine harness electrical connectors to the ecm as well as tightening the air cleaner assembly cover screws to 4 n.m (35 lb in). After reinstalling the left sheet metal diagonal brace the technician must reconnect the negative Battery Cable. Programming of the eeprom should happen when new ecms are deployed.

The initial step for replacing the Engine Control Module (ECM) should be to turn off the ignition because this precautionary measure prevents connector damage and power connection complications during the process. The metal case of the control module should avoid contact with battery voltage at all times while touching the connector pins or soldered components is strictly prohibited to safeguard against electrostatic discharge. The servicing process requires attention to both suitable cleaning of control module connector surfaces and verification that installed gaskets provide proper contaminant prevention. Failure to input remaining engine oil life and automatic transmission fluid life into the replacement module will default them to 100 percent resulting in mandatory oil changes at 5,000km and transmission fluid changes at 83,000km since programming was not performed. Start by removing the ecm by first disconnecting the negative Battery Cable followed by disconnection of the engine wiring harness middle and lower electrical connectors and by removing the engine wiring harness clip if a new ecm bracket is installed from the ecm bracket tab and lastly disconnecting the upper electrical connector from the ecm and gently lifting up the retaining tab to remove the ecm from its support brackets. You should remove the bolts that secure the ecm bracket when necessary. First position the ecm bracket and fit the bolts while tightening them to 6 n.m (53 lb in). Location the ecm beneath the retaining tab first before installing the upper electrical connector to the ecm. Before reinstalling the negative Battery Cable secure the middle and lower electrical connectors to the ecm along with installing the engine wiring harness clip to the ecm bracket tab. The installation of a new ecm requires programming for the new device.

The procedure for ecm replacement begins with turning off the ignition and using a scan tool to obtain and save the engine oil life and automatic transmission fluid life. Begin by removing the negative Battery Cable before disconnecting middle and lower electrical connectors from the ecm that are fused to the engine wiring harness. The procedure for replacing the ecm bracket requires users to first detach the engine wiring harness clip from its tab on the ecm bracket followed by unconnecting the upper electrical connector from the ecm. The pins on these connectors must not undergo human contact because electrostatic discharges will lead to damage. Use your fingers to raise the retaining tab before sliding out the ecm from its support brackets. Remove ecm bracket bolts only when needed and also detach the bracket. When installing the bracket you may need to position its slots first. Then add the bolts to fasten them at 6 n.m (53 lb in). Place the ecm onto its temporary support tabs after which it can be inserted under the retaining tab. Fit the engine wiring harness upper electrical connector to the ecm followed by installation of the engine wiring harness clip onto the ecm bracket tab when replacement of the ecm bracket occurred. The engine wiring harness middle electrical connector and lower electrical connector must be connected to the ecm before reinstalling the negative Battery Cable. A newly installed ecm requires programming to guarantee proper setup.

The Engine Control Module (ECM) service requires either replacement of the ecm unit or eeprom programming. The examination of the ecm requires testing to verify which component needs to be used during replacement. The replacement procedure starts with confirming the faulty ecm then continuing with new service ecm installation. Vehicle owners must execute the cpps learn operation whenever they replace or reprogram the ecm or replace the clutch pedal position sensor (CPPS) or clutch pedal to prevent accidents linked to Starter motor engagement with the vehicle in gear. Whichever you do with the ignition power status during control module connection and disconnection operations makes a difference because damaging internal control module components is one possible outcome. Let the metal case of the control module avoid direct battery voltage during maintenance service while practitioners must avoid both connector pins and soldered circuit board components as electrostatic discharge could harm them. Check that all connector surfaces have no debris before examining connector gaskets to verify they are installed correctly thus blocking contaminants from getting inside. It is necessary to program the replacement control module after installation due to which failure to enter the remaining engine oil life will set the oil change recommendation to 100 percent and trigger the need for oil replacement at 5000 km (3,000 mi) from the last change. A scan tool enables users to access the remaining engine oil life percentage before extracting the ecm harness connectors from the ecm body while keeping away from all contact points due to esd risk. The ecm bracket mounting tabs need to be disengaged during ecm removal. Mount the ecm inside its bracket by allowing the tabs to reach full engagement before attaching the ecm harness connectors to the ecm body . A newly installed ecm requires programming before application. Users should run the clutch pedal position sensor learn procedure when they have a manual transmission.

The process to service an Engine Control Module begins with determining between replacing or programming the eeprom. Verify that the correct ecm component exists before extracting the faulty unit to replace it with a new service ecm. After installation you must program the new ecm. You must switch off the ignition before attempting to work with control module connectors to avoid harming the inside of the modules. The metal case of the control module must not touch battery voltage and the connector pins together with soldered components should always stay away from human contact to stop electrostatic discharge damage. The technician should check for debris removal from control module connector surfaces while making sure gaskets have the correct installation to block contaminants from entering the system. Notify the technician about the current engine oil life measurement right before disconnecting the negative Battery Cable. Disconnect the engine wiring harness electrical connectors from ecm, also disconnect ecm bracket assembly with ecm bracket nuts and bolts before pulling the assembly from intake manifold studs. Unhook the bracket retainers before taking the ecm out from its position on the bracket. To separate the ecm bracket from the intake manifold studs you must disassemble the bracket bolts and nuts before removing it. During installation process begin by attaching the ecm bracket to intake manifold studs then fasten it with bolts and nuts which should be tightened to 9 nm (80 lb in). After that install the ecm onto the bracket while making sure retainers secure completely. Reinstallation of the ecm to the intake manifold studs requires their placement as instructed during previous procedures. The engine wiring harness electrical connectors need reattachment to the ecm after installing the negative Battery Cable and programming the new ecm. A scan tool should be used to specify remaining engine oil lifetime before completing the installation process.

Install the new PCM into the lower air cleaner housing, reconnect the engine harness electrical connectors, and engage the connector lever locks.

Loosen and remove the air cleaner outlet duct from the throttle body, disengage the lower housing clips, and remove the air cleaner upper housing.

Reinstall the ECM bracket and tighten the bracket bolts to 10 N.m (89 lb in).

Ensure the upper housing front tabs engage with the lower housing and the lower housing clips are secured.

Reattach the left sheet metal diagonal brace and reconnect the negative battery cable.

It typically involves either replacing the PCM or programming the electrically erasable programmable read-only memory (EEPROM).

Connect and lock the engine wiring harness electrical connectors to the ECM, reconnect the negative battery cable, and program the ECM if required.

Properly install the air cleaner outlet duct to the throttle body and tighten the clamp to 3 Nm (27 lb in).

Measure the main relay circuit voltage at the ECM fuse in the underhood fuse block using a DVOM.

The engine must run at operating temperature and consume at least 1 liter of fuel before the system recognizes the correct alcohol content.

Install the new ECM into the lower air cleaner housing, reconnect the engine harness electrical connectors, and engage the lever locks.

Disconnect the negative battery cable.

If not programmed, the replacement module will default to 100 percent, necessitating an oil change at 5,000 km (3,000 mi) from the last change.

It will necessitate an oil change at 5000 km (3,000 mi) and a transmission fluid change at 83000 km (50,000 mi) from the last service.

Reconnect the negative battery cable and program the ECM as necessary.

Avoid contact between the metal case of the control module and battery voltage, and do not touch the connector pins or soldered components to prevent electrostatic discharge damage.

Position and install the new ECM bracket, ensuring it engages the locking tabs.

To avoid defaulting to 100% for engine oil and automatic transmission fluid life.

Connect and lock the engine wiring harness connectors to the ECM, reconnect the negative battery cable, and program the ECM as necessary.

Inspect the control module connector gaskets for proper installation.

Use a scan tool to retrieve and record the percentage of remaining engine oil life.

Depress the locking tabs and remove the bracket.

The fuel system must contain ASTM gasoline with 10% or less ethanol content.

The replacement module must be programmed with this information; otherwise, it will default to 100 percent, necessitating an oil change at 5,000 km (3,000 mi) from the last change.

Slide the ECM into the ECM/TCM bracket until the retaining tabs engage, then connect the engine harness electrical connector and the body harness electrical connector to the ECM.

Slide the new PCM into the bracket on the front of the battery box and push down until the retaining tab snaps into place.

Record the remaining engine oil life using a scan tool.