Fuel Gauge
- Disconnect wire at fuel tank unit. Connect one lead of suitable gauge tester (C-3826) to wire terminal, and other lead to a good ground. Turn ignition on, turn tester knob to "H" position and observe instrument panel gauge. Gauge should read "FULL", plus 3/32" or minus 1/32". Turn tester knob to "M", gauge should read 1/2. Turn knob to "L" and gauge should read "EMPTY", plus 1/32" or minus 3/32". If gauge alert system is working properly, light should illuminate with tester knob in "L" position.
- If panel gauge does not perform as prescribed, continuity of circuit from tank sending unit to panel unit should be tested with special attention to printed circuit board before replacing gauge. If panel performs properly when tested but fails to operate properly when connected to vehicle system, fuel tank sending unit ground strap should be inspected for proper installation on fuel line. If ground continuity is OK, remove tank unit for testing.