SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISBRAKESANTILOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C0900TEST DESCRIPTION
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Test Description

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  Use the scan tool in order to inspect the voltage to the EBCM.
  2. 3:  Use the scan tool in order to inspect the voltage to the body control module (BCM). A high voltage value in multiple modules indicates a concern in the charging system.
  3. 4:  This step verifies that the condition is still present.
DTC C0900

Step Action Values Yes No
Schematic Reference: ABS Schematics 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 
  1. Turn OFF all of the accessories.
  2. Install a scan tool.
  3. Start the engine.
  4. Run the engine at approximately 2,000 RPM.
  5. With a scan tool, observe the Switched System Battery Voltage parameter in the ABS data list.
Does the scan tool indicate that the voltage is greater than the specified value?		 17V Go to Step 3  Go to Diagnostic Aids
3  With a scan tool, observe the Battery Volts parameter in Body Control Module (BCM) data list.
Does the scan tool indicate the voltage is greater than the specified value?		 17V Go to Diagnostic System Check - Vehicle in Vehicle DTC Information Go to Step 4 
4 
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 - Go to Step 5  Go to Diagnostic Aids
5 Replace the electronic brake control module (EBCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the repair?		 - Go to Step 6  -
6
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC, as specified in the supporting text.
Does the DTC reset?		 - Go to Step 2  System OK
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.