LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 1989 >> Forward Control 4.8 T, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Standard & Electronic >> Testing >> Buffer Output Diagnosis >> "C" & "K" Series

"C" & "K" Series

  1. Disconnect instrument cluster connector. Place ignition switch in the "RUN" position. Check for 12 volts between ground and Brown wire at terminal "A16". If reading is less than 12 volts, check for an open circuit in Brown wire.
  2. If reading is 12 volts, check for 12 volts between ground and Brown/White wire at terminal "B17" If reading is 12 volts, replace instrument cluster. If reading is less than 12 volts, check for an open circuit in Brown/White wire. It may be necessary to enter ECM diagnostics. See COMPUTERIZED ENGINE CONTROLS section.
scientia non olet · About LEMON Manuals