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.
1980 Mazda GLC Base, Automatic TransFACTORY OEM SERVICE PROCEDURE
MAZDA Piston Engine Timing Control System: Notes
- Remove timer from under instrument panel on driver's side. Using jumper wire, connect terminal "A" to positive terminal of battery.
- Connect a 30 ohm resistor and voltmeter to terminal "D". Connect a 3.4 watt test lamp to terminal "E". Connect terminal "C" to negative battery terminal. Voltmeter should register more than 6 volts.
- Connect terminal "B" to positive battery terminal. Voltmeter should register less than 1 volt and test lamp should glow. After 2 minutes, voltmeter should register about 8 volts. If timer does not operate as described, replace timer.
Factory Service Tools
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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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