Diagnostic Aids
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Monitoring misfire current counters, or misfire graph, may help isolate fuel injector causing condition.
Operating vehicle over a wide temperature range may help isolate fuel injector causing condition.
Perform fuel injector coil test within conditions of customers concern. A fuel injector condition may only be apparent at a certain temperature, or under certain conditions. If fuel injector coil test does not isolate condition perform fuel injector balance test. See FUEL INJECTOR BALANCE TEST .