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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 step numbers on the diagnostic table.

  1. 2:  If DTC C0245 is a history code, this step checks if a specific wheel speed circuit malfunction DTC is set concurrently with DTC C0245.
  2. 7:  This step checks if the WSS harness is routed in close proximity to the spark plug wires.
  3. 9:  In this step, if the scan tool can record any erroneous WSS signals, diagnose that sensors first.
DTC C0245

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  Are the following DTCs set concurrently with a history DTC C0245?
  • DTC C0036
  • DTC C0041
  • DTC C0046
  • DTC C0051
  • DTC C0056
 Go to Diagnostic Trouble Code (DTC) List - Vehicle Go to Step 3 
3 Inspect the wheel speed sensor (WSS) for physical damage.
Is physical damage of the WSS evident?		 Go to Step 4  Go to Step 5 
4 Replace the WSS. Refer to Wheel Speed Sensor Replacement - Front  or Wheel Speed Sensor Replacement - Rear .
Is the replacement complete?		 Go to Step 14  -
5 Inspect the wiring harness for physical damage.
Is physical damage of the wiring harness evident?		 Go to Step 6  Go to Step 7 
6 Repair the wiring harness. Refer to Wiring Repairs and Connector Repairs .
Is the replacement complete?		 Go to Step 14  -
7  Check for proper routing of the WSS harness. Check that the WSS harness is routed away from the spark plug wires.
Is the WSS harness properly routed?		 Go to Step 9  Go to Step 8 
8 Reroute the WSS harness away from the spark plug wires.
Is the reroute complete?		 Go to Step 14  -
9 
  1. Install a scan tool.
  2. Turn the ignition switch to the RUN position.
  3. Set the scan tool to Snap Shot Auto Trigger mode and monitor the WSSs.
  4. Carefully drive the vehicle above 12 km/h (8 mph) for several minutes.
Did the scan tool trigger on any of the WSSs?		 Go to Step 10  Go to Step 11 
10 Note which WSS triggered the scan tool. Follow the appropriate WSS malfunction DTC table for the WSS that triggered. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Is the repair complete?		 Go to Step 14  -
11
  1. Reconnect all previously disconnected components.
  2. Using a scan tool, clear the DTC.
  3. Remove the scan tool from the data link connector (DLC).
  4. Carefully drive the vehicle above 12 km/h (8 mph) for several minutes.
Does the DTC reset as a current DTC?		 Go to Step 13  Go to Step 12 
12 The malfunction is intermittent. Inspect all connectors and harnesses for damage that may result in an open or high resistance when connected. Refer to Connector Repairs and Wiring Repairs .
Is the repair complete?		 Go to Step 14  -
13 Replace the electronic brake control module (EBCM). Refer to Control Module References for replacement, setup and programming.
Is the replacement complete?		 Go to Step 14  -
14
  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
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