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Aci autoenginuity scan tool12/17/2022 ![]() This test is designed to cycle outputs high and low. Key On Engine Off (KOEO) Output State Self Test is a functional test of the PCM performed on demand with the key on and the engine off. Key On Engine Off (KOEO) Output State Self Test Only a hard fault code (DTC) will be displayed. If a fault is detected, a Diagnostic Trouble Code (DTC) will be the output on the data link at the end of the test when requested by a scan tool. After clearing, rerun self test a fault must be present at the time of testing for the KOEO Injector Electrical Self Test to detect the fault. The IDM stores all historical IDM fault codes to ensure that the DTC is a hard fault, you must first clear continuous DTCs (be sure to record all IDM fault codes before clearing). All injectors will first buzz (audible feedback of the injector solenoids energizing the injector valves) together for approximately 2 seconds, then each injector will buzz for approximately 1 second in numerical order (1 through 8). This test determines if the injector circuits and solenoids are electrically operating without fault. Key On Engine Off (KOEO) Injector Electrical Self Test is a functional test of the PCM performed on demand with the key on and the engine off. Key On Engine Off (KOEO) Injector Electrical Self Test After clearing, rerun self test a fault must be present at the time of testing for the KOEO On Demand Self Test to detect the fault. The IDM stores both historical and hard IDM fault codes to ensure that IDM DTC is a hard fault, you must first clear continuous DTCs (be sure to record all fault codes before clearing). This test will check that all inputs and outputs (circuits, sensors, regulators, relays and solenoids) connected to the PCM are electrically operating without fault, with the exception of the Injector Driver Module DTCs. Key On Engine Off (KOEO) On-Demand Self Test is a functional test of the PCM performed on demand with the key on and the engine off. Key On Engine Off (KOEO) On-Demand Self Test
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