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Scan Tool Inoperative

  1. Check for battery voltage at DLC terminal No. 16 (Orange wire). If battery voltage exists, go to next step. If battery voltage does not exist, repair open, blown fuse or short to ground as necessary. After repair, go to BODY CONTROL MODULE (BCM) DIAGNOSTIC SYSTEM CHECK  .
  2. Check for open circuit between DLC terminal No. 4 (Black/White wire) and ground. If no problem is found, go to next step. If problem is found, repair open or high resistance between DLC and ground. After repair, go to BODY CONTROL MODULE (BCM) DIAGNOSTIC SYSTEM CHECK  .
  3. Check for damage and poor connections on DLC terminals No. 4 and No. 16. If no problem is found, go to next step. If problem is found, repair as necessary. After repair, go to BODY CONTROL MODULE (BCM) DIAGNOSTIC SYSTEM CHECK  .
  4. Check scan tool. Follow scan tool manufacturer's instructions. After repair, go to BODY CONTROL MODULE (BCM) DIAGNOSTIC SYSTEM CHECK  .
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