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DTC B0516: Speedometer Signal Circuit Malfunction: Testing

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. If IPC diagnostic system check was performed, go to next step. If IPC diagnostic system check was not performed, go to INSTRUMENT PANEL CLUSTER (IPC) DIAGNOSTIC SYSTEM CHECK  .
  2. Using scan tool, check if any VSS DTCs are stored in PCM memory. If no VSS DTCs exist, go to next step. If any VSS DTCs exist, perform appropriate powertrain diagnostic system check. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  3. Test drive vehicle and check for proper speedometer operation. If speedometer operates properly, go to next step. If speedometer does not operate properly, go to SPEEDOMETER AND/OR ODOMETER INOPERATIVE  under SYMPTOM TESTS.
  4. Check for open, short to ground or short to voltage in Dark Green/White wire between splice S204 and IPC connector terminal A7. See Figure . S204 located approximately 2 IN from 20-pin connector C150 located at right rear of engine compartment, below battery. If circuit is okay, go to next step. If faulty circuit is found, repair as necessary and go to step  7 .
  5. Check for poor connections at IPC connector. If connections are okay, go to next step. If faulty connections are found, repair as necessary and go to step  7 .
  6. Replace IPC. See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION. Go to next step.
  7. Turn ignition off. Reinstall all components and connectors. Turn ignition on. Clear DTCs. Wait 5 seconds and check for DTCs. If DTC B0516 resets as current, go to step  6 . If DTC B0516 is not current, system is operating properly.
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