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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 416 (KEYLESS ENTRY SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESKEYLESS ENTRY SYSTEM INOPERATIVE
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Keyless Entry System Inoperative

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Keyless Entry System Inoperative
WARNING: This page is about a different car, the 2006 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Keyless Entry System Inoperative

Step Action Yes No
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
IMPORTANT: Inspect that the keyless entry transmitter is the correct model for the vehicle remote system. A wrong model transmitter will not activate the vehicle remote system.
Press each button of the transmitter one at a time.Does the system operate normally?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Lock and unlock the door locks using the controls inside the vehicle.
Do the locks operate properly?		 Go to Step 4  Go to Diagnostic Starting Point - Doors in Doors
4
IMPORTANT: While viewing scan tool data and pressing and releasing each button (Lock, Unlock, and Panic) one at a time on the transmitter, the displayed data should cycle between OFF and ON.
  1. Turn ignition to run
  2. Connect scan tool and select Body Control Module
  3. Select Data Display
  4. Select Door Lock Data
  5. While pressing each button on the transmitter, view the Remote Lock Command, Remote Unlock Command, and Remote Panic Command states.
Do the states change with each button press?		 Go to Step 9  Go to Step 5 
5
  1. Remove the battery from the keyless entry transmitter.
  2. With a DMM, measure the battery voltage.
Is the transmitter battery voltage greater than 2.8V?		 Go to Step 7  Go to Step 6 
6 Replace the transmitter battery. Refer to Transmitter Battery Replacement .
Did you complete the replacement?		 Go to Step 10  -
7 Replace the keyless entry transmitter.
Did you complete the replacement?		 Go to Step 8  -
8 Perform the transmitter programming procedure. Refer to Transmitter Programming .
Was the programming procedure completed successfully?		 Go to Step 10  Go to Step 9 
9
IMPORTANT: When replacing the body control module (BCM), perform the BCM programming procedure. Also program all transmitters. Refer to Transmitter Programming 
Replace the BCM. Refer to Control Module References in Computer/Integrating Systems.Did you complete the replacement?		 Go to Step 10  -
10 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 3 
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.