FixVault
Home › Pontiac › 2005 › Aztek Base, AWD › Repair and Diagnosis › Brakes › Antilock Brake System And Traction Control System › Diagnostic Information and Procedures › DTC B2747 › Test Description

Test Description

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

  1. 2:  This step verifies that the fault is present.
  2. 3:  This step tests for a shorted switch.
DTC B2747

Step Action Yes No
Schematic Reference: ABS Schematics 
Connector End View Reference: ABS Connector End Views  or Computer/Integrating Systems Connector End Views in Computer/Intergrating Systems
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. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the TCS Switch State input parameter in the Body Control Module (BCM) input data list.
Does the scan tool display Active?		 Go to Step 3  Go to Diagnostic Aids
3 
  1. Turn OFF the ignition.
  2. Disconnect the traction control switch.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the TCS Switch State input parameter.
Does the scan tool display Inactive?		 Go to Step 6  Go to Step 4 
4 Test the traction control switch input/signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 9  Go to Step 5 
5 Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 9  Go to Step 7 
6 Inspect for poor connections at the harness connector of the traction control switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 9  Go to Step 8 
7 Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 9  -
8 Replace the traction control switch. Refer to Traction Control Switch Replacement  in Instrument Panel, Gages, and Console.
Did you complete the replacement?		 Go to Step 9  -
9
  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
About FixVault