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Home >> Mazda >> 1979 >> B2000 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Emissions System - Deceleration Control System >> Operation >> Throttle Positioner System >> Engine Speed Switch

Engine Speed Switch

Switch determines engine RPM and completes electrical circuit to 3-way solenoid when more than 1000 RPM (Federal) or 1100 RPM (Calif.) is sensed.

NOTE: On models with air conditioning, the air conditioning relay is in-line ahead of engine speed switch. Whenever A/C is in on position, this relay will activate throttle positioner system, allowing slightly higher idle speeds.
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