Fuel Gauge Testing
- Disconnect fuel tank sending unit 6-pin connector. Fuel tank sending unit 6-pin connector is located on front of fuel tank. Using Gauge System Tester (Rotunda 021-00055), connect one lead to Yellow terminal wire of fuel tank sending unit 6-pin connector and other lead to ground. See Fig 1 .
- Set tester to resistance values shown in illustration. See Fig 1 . Turn ignition on and check to see that needle indicator displays correct values. Continue inspection for 2 minutes on each setting, to correctly judge accuracy of gauge.
- Allowable error is twice the width of fuel gauge needle. If fuel gauge readings are correct, go to FUEL GAUGE SENDING UNIT CHECK. If fuel gauge readings are not correct, replace fuel gauge.