Fails Emission Test

Check:

1. Manifold Absolute Pressure (MAP) Sensor (3)(5)
2. Carburetor
3. Oxygen Sensor (1)
4. Electronic Air Control Valve (14)
5. Air Intake
6. Other Emission Controls
7. PGM-CARB Control Unit (BU)

NOTE:
After each symptom, the system that could be the source of the symptom are listed and should be checked in the order they are listed, beginning with #1.

(BU) code used when the CHECK ENGINE warning light is on, and the self-diagnosis indicator LED is ON with no "blinks", the back-up system is in operation.

Self-diagnosis indicator, (LED) blinks (?), will follow associated systems.