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.
2003 Suzuki Aerio GS, AWD, AutomaticFACTORY OEM SERVICE PROCEDURE
Circuit Tests: Notes
NOTE:
See PIN VOLTAGE/CIRCUIT RESISTANCE CHARTS article and ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL for PCM connector and wire terminal identification.
CIRCUIT TEST DIRECTORY
| Application | Circuit Test |
|---|---|
| Engine System Check | B-1 |
| Fuel Injector Circuit | B-2 |
| Fuel Pump Circuit | B-3 |
| Fuel Pressure Inspection | B-4 |
| Ignition System Check | B-5 |
| Idle Air Control Valve System Check | B-6 |
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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