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Home >> Plymouth >> 1988 >> Colt Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Standard >> Testing & Diagnosis >> Navigator Diagnostic Functions >> Fuel Level Diagnostic Feature

Fuel Level Diagnostic Feature

  1. If Navigator "RANGE" function is not normal, check Navigator using fuel level diagnostic function. Press "SPD" button. Within 5 seconds simultaneously press "US/M" and "RESET" buttons. Then, press "SET" button.
  2. Enter "124" into Navigator. Display should read 30 or less for full tank and above 229 for an empty tank. For example, a tank with 5 gallons in it should show reading of about 185. If fuel level function is okay, replace Navigator.
  3. If fuel level function indicates failure, check instrument cluster fuel gauge operation. If fuel gauge works properly, test fuel tank sending unit. To deactivate speed diagnostic function, press "SET" button and then another function button.
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