LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2000 >> Cavalier LS, 2.4 T >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> Self-Diagnostic System >> Scan Tool Does Not Power Up
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.
scientia non olet · About LEMON Manuals