Component Testing

Fuel Injector Balance Test with Special Tool

1. Ignition ON, verify that the scan tool engine coolant temperature (ECT) parameter is less than 94°C (201°F).
   • If the ECT is greater than 94°C (201°F) allow the engine to cool before proceeding.
2. Turn OFF all accessories.
3. Turn OFF the ignition.
NOTE: DO NOT connect the EL-39021-460  until prompted by the AFIT. See Special Tools .
4. Install the AFIT. Refer to the AFIT User Guide.
5. Turn ON the AFIT and select the vehicle.
6. Turn ON the ignition and perform the Injector Test.
   • If the AFIT aborts testing due to fuel pressure or fuel leak down, refer to Fuel System Diagnosis .
7. View the test results.
   • If any injector exceeds the recommended tolerance, replace the injector(s).