Step 1.0 Visual Check

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Correct results of the Quick Test are dependent on the proper operation of related non-EEC-IV components. Cover the basics and save possible misdiagnosis time. Visually:

Ensure vacuum hoses are connected correctly.
Check EEC-IV system wiring harness for proper connections, bent or broken pins, corrosion, loose wires, proper routing, etc.
Check the ECA, sensors and actuators for physical damage.
Check the engine coolant for proper level.
Check the transmission fluid level and quality.
Make all necessary repairs before continuing with STEP 2.0.