Diagnostic Aids

If a short to voltage on control circuit or a shorted fuel injector exists when fuel injector is commanded on, PCM will open driver circuit for protection and current draw will be low.

Fuel in the oil is a good indication of a leaking or grounded injector.

To locate an intermittent problem, start engine and use scan tool to monitor MISFIRE CURRENT CYL. of affected cylinder. If a fuel injector fault exists, a misfire will occur on affected cylinder and misfire counter will count up.

Fuel injector resistance should be 12-13 ohms at 74°F (23°C).