Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Output State Check
The Output State Check verifies the ECA can energize system outputs. It enables you to energize and de-energize most of the system outputs at will.
This mode is entered at the end of the Key On Engine Off (KOEO) self-test, after all the On-Demand and Continuous Memory Codes have been received. At this time, leave self-test activated and briefly perform a Wide Open Throttle (WOT). Each time a WOT is performed, most of the output actuators will change state from energized to de-energized or from de-energized to energized.
To begin, connect test equipment. See STEP 2.0: VEHICLE PREP & EQUIPMENT HOOKUP . Turn ignition key to the On position. Activate self-test. See STEP 3.0: PERFORM KOEO SELF-TEST . Wait for all code output to end. Perform brief WOTs to energize or de-energize the outputs as necessary.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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