LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2001 >> Century Limited >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brake System With Traction Control System - DELPHI 7 >> Diagnostic Tests >> DTC B2747: Traction Off Indicator Illuminated ("W" Body)

DTC B2747: Traction Off Indicator Illuminated ("W" Body)

  1. Perform ABS Diagnostic System Check. See DIAGNOSTIC SYSTEM CHECK  under DIAGNOSIS & TESTING. After performing diagnostic system check, go to next step.
  2. Install scan tool. Turn ignition on, with engine off. Using scan tool, observe TCS switch parameter in BCM data list. If scan tool displays OFF, go to next step. If scan tool does not display OFF, go to next step.
  3. Activate TCS switch. Observe TCS switch parameter on scan tool. If TCS switch parameter changes state, problem is intermittent. See INTERMITTENTS & POOR CONNECTIONS  under DIAGNOSIS & TESTING. If TCS switch parameter does not change state, go to next step.
  4. Turn ignition off. Disconnect TCS switch. Turn ignition on, with engine off. Using scan tool, observe TCS switch parameter. If scan tool displays OFF, go to step  7. If scan tool does not display OFF, go to next step.
  5. Check TCS switch signal circuit for short to ground. Repair as necessary. After repairs, go to step  10. If circuit is okay, go to next step.
  6. Check for poor connections at BCM harness connector. Repair as necessary. After repairs, go to step  10. If connections are okay, go to step  8.
  7. Check for poor connections at TCS switch harness connector. Repair as necessary. After repairs, go to step  10. If connections are okay, go to step  9.
  8. Replace BCM. Reprogram replacement BCM. See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. After replacing BCM, go to step  10.
  9. Replace TCS switch. After replacing switch, go to next step.
  10. Using scan tool, clear DTCs. Turn ignition on, then recheck for DTCs. If DTC resets, go to step  2. If DTC does not reset, system is okay.
scientia non olet · About LEMON Manuals