Chevrolet Sonic Repair Manual: K20 Engine Control Module: Programming and Setup
Special Tools
EL-49642 SPS Programming Support Tool
For equivalent regional tools, refer to Special Tools.
Note:
- DO NOT program a control module unless directed to by a service procedure
or a service bulletin. If the control module is not properly configured
with the correct calibration software, the control module will not control
all of the vehicle features properly.
- Ensure the programming tool is equipped with the latest software and
is securely connected to the data link connector. If there is an interruption
during programming, programming failure or control module damage may occur.
- Stable battery voltage is critical during programming. Any fluctuation,
spiking, over voltage or loss of voltage will interrupt programming. When
required install the EL-49642 SPS Programming Support Tool to maintain
system voltage. If not available, connect a fully charged 12 V jumper or
booster pack disconnected from the AC voltage supply. DO NOT connect a battery
charger.
- Turn OFF or disable systems that may put a load on the vehicles battery
such as; interior lights, exterior lights (including daytime running lights),
HVAC, radio, etc.
- During the programming procedure, follow the SPS prompts for the correct
ignition switch position.
- Clear DTCs after programming is complete. Clearing powertrain DTCs will
set the Inspection/Maintenance (I/M) system status indicators to NO.
- Note the engine oil life remaining percentage.
- Replace and Program Control Module
-
To program a replacement K20 Engine Control Module (ECM), perform the following
procedure:
- Install EL-49642 SPS programming support tool.
- Access the Service Programming System (SPS) and follow
the on-screen instructions.
- Before removing the old control module, perform the
SPS function Prepare Control Module for Removal, if available.
Note:
The Prepare Control Module for Removal function can
only be performed when communication with the old control module is
still possible.
- Replace the ECM.
- Perform the SPS function K20 Engine Control Module
- Programming and follow the on-screen instructions.
- Clear the DTCs after completing the Programming procedure.
- Perform the SPS function Immobilizer Learn and follow
the on-screen instructions. Refer to Immobilizer
System Component Programming.
- Perform the SPS function K20 Engine Control Module
- Configuration & Setup and follow the on-screen instructions.
- Clear DTCs after completing the Configuration & Setup
procedure.
- Reprogram Control Module
-
To reprogram an existing K20 Engine Control Module, perform the following
procedure:
- Install EL-49642 SPS programming support tool.
- Access the Service Programming System (SPS) and follow
the on-screen instructions.
- Clear DTCs after completing the Programming procedure.
- Perform the SPS Function Immobilizer Learn and follow
the on-screen instructions. Refer to Immobilizer
System Component Programming.
- Perform the SPS function Engine Control Module - Configuration
& Setup and follow the on-screen instructions, if available.
- Clear DTCs after completing the Configuration & Setup
procedure.
- Unsuccessful Programming Recovery
-
In the event of an interrupted or unsuccessful programming event, perform
the following:
- Ignition ON. Ensure the control module, DLC, and programming
tool connections are secure and the SPS software is up to date.
- Verify the control module can be reprogrammed.
- If the control module cannot be reprogrammed
- Ignition OFF for one minute, ignition ON.
- Verify the control module can be reprogrammed.
- If the control module cannot be reprogrammed, replace
the K20 Engine Control Module.
- If the control module can be reprogrammed
- All OK.
- Repair Instructions
-
Perform the Diagnostic Repair Verification
after completing the repair.
Control Module References for ECM replacement,
programming and setup.
Engine Control Module Replacement
Callout
Component Name
Note: If the ECM is to be replaced, the ECM must be RESET
(prepa ...
Other materials:
Engine Exhaust
Warning
Engine exhaust contains carbon monoxide (CO) which cannot be seen or smelled.
Exposure to CO can cause unconsciousness and even death.
Exhaust may enter the vehicle if:
. The vehicle idles in areas with poor ventilation (parking garages,
tunnels, deep snow that may block underbody ...
Cooling System
The cooling system allows the engine to maintain the correct working temperature.
1.4L L4 Engine
1. Engine Cooling Fan (Out of View)
2. Engine Coolant Surge Tank and Pressure Cap
1.8L L4 Engine
1. Engine Cooling Fan (Out of View)
2. Engine Coolant Surge Tank and Pressure Cap
Warning
An e ...
Wheel Drive Shaft Outer Joint Inspection
Disassembly Procedure
Remove the outer constant velocity (CV) joint and boot from the wheel
drive shaft. Refer to Front Wheel Drive Shaft Outer Joint and Boot Replacement.
Remove any lubricant from the CV joint.
Note: Position the cage and the inner race so they a ...
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