Instrument Cluster (IC) Dealer Test Mode
08-31-2017, 04:39 PM
#22
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Just wondering if anybody knows or has information regarding the gauge sweep test.
My brother in laws 2004 F150 has a gas gauge that generally works somewhat when the tank is full but does not work at all or gets stuck in various positions when it's below half tank.
I did a gauge sweep and all of the gauges, except the fuel gauge, sweep full path like they're supposed to. Fuel gauge just kind of trembles or moves a little and then trembles. If the gauge needle doesn't sweep during the test is that an absolute conviction of the gauge/cluster itself or can problems with the fuel pump assembly mounted sending unit still cause a gauge to not work correctly during a gauge sweep?
I'm thinking the gauge sweep eliminates questions about whether the various sending units are to blame by bypassing those circuits for the purpose of testing actual gauge function?
My brother in laws 2004 F150 has a gas gauge that generally works somewhat when the tank is full but does not work at all or gets stuck in various positions when it's below half tank.
I did a gauge sweep and all of the gauges, except the fuel gauge, sweep full path like they're supposed to. Fuel gauge just kind of trembles or moves a little and then trembles. If the gauge needle doesn't sweep during the test is that an absolute conviction of the gauge/cluster itself or can problems with the fuel pump assembly mounted sending unit still cause a gauge to not work correctly during a gauge sweep?
I'm thinking the gauge sweep eliminates questions about whether the various sending units are to blame by bypassing those circuits for the purpose of testing actual gauge function?