2003 Suzuki Aerio GS, AWD, AutomaticFACTORY OEM SERVICE PROCEDURE

Visual Inspection

Visually inspect following component condition and operation:

  • Electrical wiring, looking for chafed, stretched, cut or pinched wires. Ensure electrical connectors fit tightly and are not corroded. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  • Ensure vacuum hoses are properly routed and are not pinched or cut. See appropriate diagram in VACUUM DIAGRAMS article to verify routing and connections (if necessary).
  • Air filter element clogging.
  • Automatic transmission fluid condition, level and leakage.
  • Auxiliary engine components for looseness and installation.
  • Battery volage level, corrosion and terminal tightness.
  • Drive belt tension and condition.
  • Engine oil condition, level and leakage.
  • Engine coolant condition, level and leakage.
  • Engine oil pressure warning light operation.
  • Engine temperature gauge operation.
  • Exhaust system for leaks.
  • Fuel level and leakage.
  • Fuel level gauge operation.
  • Fuses blown.
  • Inspect air induction system for vacuum leaks.
  • MIL operation.
  • Tachometer operation (if equipped).
  • Throttle cable play and chaffing.

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.