Fuel Gauge & Warning Light: Festiva
- If fuel gauge always reads "EMPTY", ground Yellow wire of instrument cluster connector. Fuel gauge should read "FULL". If gauge does not read "FULL", replace fuel gauge. If gauge did read "FULL", proceed to step 2). See Fig 1
.
- Ground Yellow wire at fuel tank sending unit connector. Fuel gauge should read "FULL". If gauge does not read "FULL", repair Yellow wire between fuel gauge and fuel tank sending unit. If gauge does read "FULL", proceed to step 3).
- Ground terminal "B" at fuel tank sending unit connector. Fuel gauge should read normal. If gauge does not read normal, replace fuel tank sending unit. If gauge does read normal, repair terminal Black wire between fuel tank sending unit and ground.
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- If fuel gauge always reads "FULL", disconnect instrument cluster connector. If gauge reads "FULL", replace fuel gauge. If gauge does not read "FULL", proceed to step 5).
- Reconnect instrument cluster connector. Disconnect fuel tank sending unit connector. If gauge reads "FULL", repair Yellow wire between fuel gauge and sending unit. If gauge does not read "FULL", replace sending unit. See Fig 2
.
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- If fuel gauge is not accurate, disconnect fuel tank sending unit. Connect leads of Rotunda Gauge Tester (021-00038) to Yellow wire of fuel tank sending unit connector and the other lead to ground.
- Turn ignition on, check that fuel gauge needle indicator displays correct resistance values. See Fig 3
. Inspection should continue for 2 minutes. If fuel gauge readings are incorrect, replace fuel gauge. If gauge readings are correct, proceed to FUEL GAUGE SENDING UNIT test.
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