6. KOEO Injector Electrical Self-Test

6. KOEO INJECTOR ELECTRICAL SELF-TEST

Purpose:

NOTE: Before carrying out the KOEO injector electrical self-test, allow the engine to stabilize at the temperature necessary to recreate the symptom. Access the PCM and record the freeze frame data. The freeze frame data contains information which can be used to recreate original conditions that caused the symptom. Refer to Diagnostic Methods, Freeze Frame Data for more information. Freeze Frame Data

The purpose of this test is to determine if the injectors are functioning.

KOEO Injector Electrical Self-Test
- Use the scan tool. Injector DTCs will be transmitted after the self-test is completed.

Cylinder And Fuel Injector Location:

Recommended Procedure:
This test determines if the injectors and circuits are correctly operating. If an electrical concern is present, a DTC sets and outputs on the data link at the end of the test when requested by a scan tool.
- Turn off all accessories. If the vehicle is equipped with a PTO system or auxiliary idle control, it must be turned off to carry out the self-tests.
- Carry out the necessary vehicle preparation and a visual inspection. Refer to Diagnostic Methods, Quick Test Operation. Quick Test Description
- Refer to the scan tool operating manual for instructions.
- Ignition ON, engine OFF.
- Carry out the KOEO Injector Electrical Self-Test.
- Ignition in OFF position.
- Record the DTCs and carry out the appropriate pinpoint test.

Possible Causes:
- Open or shorted injector circuit
- Injector connector
- Injector

Tools Required:
Scan tool