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.
1989 Suzuki Swift GLX, AutomaticFACTORY OEM SERVICE PROCEDURE
Oxygen Sensor
- Start engine and warm to operating temperature. Pull back connector seal at oxygen sensor. Using a digital voltmeter with at least a 10-megohm input impedance, backprobe oxygen sensor connector. If connector is inaccessible, backprobe control unit at appropriate terminal. See CONTROL UNIT OXYGEN SENSOR TERMINAL IDENTIFICATION table.
- Increase engine speed to about 2000 RPM and hold for about 60 seconds. Monitor voltmeter reading. Voltmeter should fluctuate between zero and one volt, without being constantly high or low. If voltage is not as indicated, go to CODE 13 chart in TESTS W/CODES article in this section.
CONTROL UNIT OXYGEN SENSOR TERMINAL IDENTIFICATION
| Application | Terminal |
|---|---|
| Swift | A8 |
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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