Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- A fuel injector control circuit DTC may not set, but a misfire may be apparent. Monitoring the misfire current counters, or misfire graph, may help isolate the fuel injector that is causing the condition.
- The fuel injector coil windings are affected by temperature. The resistance of the fuel injector coil windings increases as the temperature of the fuel injector increases. Operating the vehicle over a wide temperature range may help isolate the fuel injector that is causing the condition.
- A fuel injector coil winding resistance that is too high or too low will affect engine driveability. Perform the fuel injector coil test within the conditions of the customers concern. A fuel injector condition may only be apparent at a certain temperature, or under certain conditions.
- If the fuel injector coil test does not isolate the condition perform the fuel injector balance test. Refer to Fuel Injector Balance Test with Special Tool or Fuel Injector Balance Test with Tech 2 .