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Home >> Chevrolet >> 1998 >> Corvette 2D Convertible, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Testing - Diagnostic >> DTC B0516: Speedometer Signal Circuit Malfunction >> Diagnostic Aids

Diagnostic Aids

  1. The following conditions may cause an intermittent: PCM is unable to process correct vehicle speed data sent from VSS or erratic VSS operation.
  2. Test drive vehicle and check for proper speedometer operation. If IPC cannot display proper vehicle speed information, use scan tool to display PCM VSS data. If PCM is not receiving proper input from VSS, PCM and VSS circuits must be diagnosed first before diagnosing DTC B0516. See TESTS W/CODES article in ENGINE PERFORMANCE section.
  3. Before diagnosing DTC B0516, always check for proper speedometer operation by using scan tool to display PCM vehicle speed data and check for VSS DTCs.
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