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Home >> Chevrolet >> 1994 >> Corvette Base, 2D Convertible, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Central Control Module & Data Link Communications >> Self-Diagnostic System >> Entering & Exiting Diagnostics >> Manual Diagnostic Mode

Manual Diagnostic Mode

  1. To enter manual diagnostic mode, press any button on DIC during automatic diagnostic mode display. Manual diagnostic mode will also be entered automatically after automatic diagnostic mode is complete.
  2. Upon entry into mode, speedometer will be blank and trip monitor will display "1.0" indicating module No. 1 (CCM) is awaiting further instruction. Press buttons on DIC to perform desired function. If the beginning of a list of codes is arrived at by pressing either the ENG MET (next value) button or the FUEL INFO (previous value) button on DIC, speedometer will display "--". Speedometer will also display "--" if no codes are present for module being checked. See Figure and Figure .
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