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.
Electronic Control Assembly
The Electronic Control Assembly (ECA) is located in passenger compartment, under center console. It contains circuits designed to continuously sample input signals from the engine sensors. Optimum air/fuel ratio and ignition timing is calculated to meet conditions as indicated by these signals. The ECA then sends out appropriate signals to adjust air/fuel ratio and spark timing to optimum levels.
The ECA contains a memory and specific programming information as required to determine ideal operating conditions. Different calibration information is used in different vehicle applications, such as California or Federal models.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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