Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2000PARK AVENUE BASE, 3.8 1REPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEBODY, CAB CONTROL SYSTEMSBODY CONTROL MODULESSYSTEM TESTSSCAN TOOL DOES NOT POWER UP
2000 Buick Park Avenue Base, 3.8 1
Scan Tool Does Not Power Up
2000 Buick Park Avenue Base, 3.8 1SECTION Scan Tool Does Not Power Up
- Using DVOM, check for battery voltage at DLC terminal No. 16 (Orange wire). If voltage exists, go to next step. If voltage does not exist, repair open or short to ground in DLC power feed circuit. See WIRING DIAGRAMS . Recheck system.
- Check for ground at DLC terminal No. 4 (Black wire). If ground is okay, go to next step. If circuit is open, repair Black wire between DLC and G202, located behind driver's side kick panel. Recheck system.
- Check DLC terminals No. 4 and No. 16 for poor contact. If no problem is found, go to next step. If any problem is found, repair as necessary. Recheck system.
- Check scan tool. See scan tool instructions. Try scan tool on another vehicle. Recheck system.
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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.