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HOMESERVICE MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 46 (ANTILOCK BRAKE SYSTEM, TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C0240TEST DESCRIPTION
2006 Buick Terraza CXL, 3.5 L, AWD

Test Description

2006 Buick Terraza CXL, 3.5 L, AWDSECTION Test Description
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 4:  This step checks if DTC C0240 resets.
DTC C0240

Step Action Yes No
Schematic Reference: ABS Schematics 
Connector End View Reference: ABS Connector End Views 
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 the ignition switch to the RUN position, with the engine OFF.
  2. Using a scan tool, read the antilock brake system (ABS)/traction control system (TCS) DTCs.
Are any other DTCs set?		 Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information Go to Step 3 
3 Is DTC C0240 set as a current code? Go to Step 5  Go to Step 4 
4 
  1. Using the scan tool, clear the DTC.
  2. Remove the scan tool from the data link connector (DLC).
  3. Carefully drive the vehicle above 12 km/h (8 mph) for several minutes.
Did DTC C0240 set as a current DTC?		 Go to Step 5  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
5 Perform the Powertrain OBD System Check. Refer to LINK 79563 in Engine Controls.
Did the vehicle pass the OBD System Check?		 Go to Step 6  Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information
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

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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.