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 MANUALSSUZUKI1990SWIFT GA, 4D SEDANREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTS
1990 Suzuki Swift GA, 4D Sedan
Engine Controls - System/Component Tests
1990 Suzuki Swift GA, 4D SedanSECTION Engine Controls - System/Component Tests
- Introduction
- Electronic Control Module (ECM)
- ECM Location
- ECM Power & Ground Circuits
- Engine Sensors & Switches
- Airflow Meter (Swift DOHC)
- Air Temperature Sensor (Samurai, Sidekick & Swift SOHC)
- Coolant (Water) Temperature Sensor
- Crank Angle Sensor (Samurai & Swift DOHC)
- EGR Temperature Sensor (CALIF. DOHC)
- Idle Switch
- Oxygen Sensor
- Park/Neutral Switch (Sidekick A/T)
- Park/Neutral Switch (Swift A/T)
- Power Steering (P/S) Pressure Switch (Sidekick)
- Pressure Sensor (Samurai, Sidekick & Swift SOHC
- Pressure Sensor Output Voltage (On-Vehicle)
- Pressure Sensor Output Voltage (Off-Vehicle)
- Throttle Position Sensor (TPS) (Except Swift SOHC With M/T)
- Throttle Position Sensor (TPS) Resistance
- Throttle Switch Continuity
- Relays & Solenoids
- Relays
- Solenoids
- Fuel Delivery
- Fuel Pump Relay Location
- Fuel Control
- Fuel Injector Resistance
- Idle Control System
- Air Valve (Samurai, Sidekick)
- Air Valve (Swift DOHC)
- Air Valve (Swift SOHC)
- Idle Speed Control (ISC) System (Samurai)
- Idle Speed Control (ISC) System (Sidekick)
- Idle Speed Control (ISC) System (Swift DOHC)
- Idle Speed Control (ISC) System (Swift SOHC)
- Idle Speed Control (ISC) Solenoid (Samurai, Swift)
- Idle Speed Control (ISC) Solenoid (Sidekick)
- Throttle Opener System (Samurai & Sidekick)
- Ignition System
- Emission Systems & Sub-Systems
- Exhaust Gas RECIRCULATION (EGR)
- EGR System Test (CALIF. Samurai)
- EGR System Test (Federal Samurai)
- EGR System Test (CALIF. Sidekick)
- EGR System Test (Federal Sidekick)
- EGR System Test (CALIF. Swift)
- EGR Temperature Sensor (CALIF. Samurai & Swift DOHC)
- EGR Valve
- EGR Modulator (BACKPRESSURE Transducer)
- EGR Vacuum Switching Valve (Samurai & Sidekick
- Fuel Evaporation
- PCV Valve
- Miscellaneous Controls
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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.