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.
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HOMESERVICE MANUALSMAZDA1988B2200 SE-5, 2D PICKUP, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEM2.2L FEEDBACK CARBURETOR SYSTEMCOMPONENT TESTINGSYSTEM COMPONENTSIDLE SWITCH
1988 Mazda B2200 SE-5, 2D Pickup, Automatic
Idle Switch
1988 Mazda B2200 SE-5, 2D Pickup, AutomaticSECTION Idle Switch
- Warm engine to normal operating temperature and run engine at idle speed. Connect tachometer to engine. Connect voltmeter to idle switch terminal Lt. Green/Red wire.
- Increase engine speed to greater than 2000 RPM. Decelerate gradually and note voltmeter reading. With engine speed at 1000-1200 RPM, reading should be less than 1.5 volt.
- With engine speed at idle, reading should be 12 volts. If voltage reading is not as specified, turn idle switch adjustment screw to adjust.
- Using Self-Diagnostic Checker (49 H018 9A1) and with shift lever in Neutral, check self-diagnostic checker monitor light while depressing accelerator pedal.
- With accelerator pedal released, monitor light should be off. With accelerator pedal depressed, monitor light should be on. If monitor light does not operate as specified, check ECU terminal 1D and idle switch.
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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.