Scan Tool Does Not Power Up

2000 Chevrolet Cavalier Base, 4D Sedan, 2.4 TSECTION Scan Tool Does Not Power Up
  1. Check for battery voltage at DLC terminal No. 16 (Orange wire). See Figure . If battery voltage exists, go to next step. If battery voltage does not exist, repair open or short to ground in Orange wire between DLC and CIG fuse (20-amp) located in left Instrument Panel (IP) junction block. After repairs, go to step  5 .
  2. Check for open in Black wire between DLC terminal No. 4 and ground point G204. See Figure . Repair as necessary and go to step  5 . If ground circuit is okay, go to next step.
  3. Check for poor connections between scan tool and DLC terminals No. 4 and 16. See Figure . Repair as necessary and go to step  5 . If no problems are found, go to next step.
  4. Scan tool may be malfunctioning. Check scan tool manual for diagnostic procedures. After repairs, go to next step.
  5. Perform diagnostic system check. See BODY CONTROL SYSTEM DIAGNOSTIC SYSTEM CHECK  . If referred from another article, return to that article and perform diagnostic system check.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.