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HOMESERVICE MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 128 (ANTILOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C0252TEST 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 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 2:  This checks to see if DTC C0252 is set.
  2. 3:  This step checks to see if the DTC C0252 resets.
  3. 4:  This step checks to see if VSES data list parameters are correct.
  4. 5:  This step checks the components harness connectors for poor connections.
DTC C0252

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
2 
  1. Turn OFF the ignition.
  2. Install a scan tool.
  3. Turn ON the ignition, with the engine OFF.
  4. Select the ABS DTC display function.
Does the scan tool display any DTC other than DTC C0252?		 Go to Diagnostic Trouble Code (DTC) List - Vehicle Go to Step 3 
3 
  1. Use the scan tool in order to clear the DTC.
  2. Perform the Diagnostic Test Drive .
  3. Use the scan tool to select the ABS DTC display function.
Does the DTC reset?		 Go to Step 4  Go to Diagnostic Aids
4 
  1. Use the scan tool to select the VSES data list.
  2. Compare data to the typical values located in the electronic brake control module (EBCM) scan tool data list under Vehicle Stability Enhancement System (VSES) Data List. Refer to Scan Tool Data List .
Are all parameters correct?		 Go to Step 5  Go to Testing for Intermittent Conditions and Poor Connections
5  Check the wiring harness connectors for the following:
  • EBCM
  • Brake pressure sensor
  • Steering angle sensor
  • Yaw/lateral accelerometer sensor
  • LF wheel speed sensor (WSS)
  • RF WSS
  • RF WSS
  • RR WSS

Did you find and correct the condition?		 Go to Step 6  Go to Testing for Intermittent Conditions and Poor Connections
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.