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HOMESERVICE MANUALSBUICK2000PARK AVENUE BASE, 3.8 KREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM AND VSES - BOSCH 5.3SYMPTOM TESTSTEST H: TRACTION OFF INDICATOR INOPERATIVE (2001 "K" BODY)
2000 Buick Park Avenue Base, 3.8 K

Test H: Traction Off Indicator Inoperative (2001 "K" Body)

2000 Buick Park Avenue Base, 3.8 KSECTION Test H: Traction Off Indicator Inoperative (2001 "K" Body)
  1. Perform DIAGNOSTIC SYSTEM CHECK  under DIAGNOSIS & TESTING. Go to next step.
  2. Turn ignition on. Install scan tool. Turn ignition on, engine off. Using scan tool, observe TCS SWITCH parameter in INSTRUMENT PANEL MODULE data list. Activate traction control switch. If TCS SWITCH parameter changes state, problem is intermittent. See INTERMITTENT OR POOR CONNECTIONS  under DIAGNOSIS & TESTING. If TCS SWITCH PARAMETER does not change state, go to next step.
  3. If scan tool indicates TCS SWITCH parameter as ON, go to next step. If scan tool does not indicate TCS SWITCH parameter as ON, go to step  5.
  4. Turn ignition off. Disconnect traction control switch connector. Turn ignition on, engine off. Using scan tool, observe TCS SWITCH parameter. If scan tool displays OFF, go to step  10. If scan tool does not display OFF, go to step  6.
  5. Turn ignition off. Disconnect traction control switch connector. Connect fused jumper wire (3 amp) between traction control switch connector signal circuit and ground circuit. Turn ignition on, engine off. Using scan tool, observe TCS SWITCH parameter. If scan tool displays ON, go to step  10. If scan tool does not display ON, go to step  7.
  6. Check signal circuit of traction control switch for short to ground. If problem was found, repair as necessary. After repairs, go to step  13. If problem was not found, go to step  9.
  7. Check signal circuit of traction control switch for open or high resistance. If problem was found, repair as necessary. After repairs, go to step  13. If problem was not found, go to next step.
  8. Check ground circuit of traction control switch for open or high resistance. If problem was found, repair as necessary. After repairs, go to step  13. If problem was not found, go to next step.
  9. Check IPM connector for poor connections. If problem was found, repair as necessary. After repairs, go to step  13. If problem was not found, go to step  11.
  10. Check traction control switch connector for poor connections. If problem was found, repair as necessary. After repairs, go to step  13. If problem was not found, go to step  12.
  11. Replace IPM. See appropriate ANALOG INSTRUMENT PANELS or ANALOG & ELECTRONIC INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. After repairs, go to step  13.
  12. Replace traction control switch. See TRACTION CONTROL SWITCH  under REMOVAL & INSTALLATION. After repairs, go to next step.
  13. Operate system to verify repair.
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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.