Test AF: Incorrect Fuel Gauge Reading In Alternative Fuel Mode (Bi-Fuel Only)

Check fuel gauge operation in both alternative fuel and gasoline modes. If fuel gauge operates correctly in both modes, repair by symptom. See SYMPTOM INDEX  table. If fuel gauge does not operate correctly in alternative fuel mode only, replace compuvalve. See appropriate REMOVAL, OVERHAUL & INSTALLATION article in ENGINE PERFORMANCE. Retest system operation. If fuel gauge does not operate correctly in gasoline mode only, perform TEST AG: INCORRECT FUEL GAUGE READING IN GASOLINE MODE (BI-FUEL ONLY) . If fuel gauge does not operate correctly in both alternative fuel and gasoline fuel modes, perform TEST AH: INCORRECT FUEL GAUGE READING IN ALTERNATIVE FUEL & GASOLINE MODE (BI-FUEL ONLY) .