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 MANUALSNISSAN-DATSUN1991300ZX TURBO, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTS
1991 Nissan-Datsun 300ZX Turbo, Automatic
Engine Controls - System/Component Tests
1991 Nissan-Datsun 300ZX Turbo, AutomaticSECTION Engine Controls - System/Component Tests
- Introduction
- Air Induction Power Valve System
- Computerized Engine Controls
- Engine Sensors & Switches
- Notes
- Airflow Meter
- Air Conditioner Switch
- Crankshaft Angle Sensor
- Detonation (Knock) Sensor
- Engine (Coolant) Temperature Sensor
- Exhaust Gas (Oxygen) Sensor
- Exhaust Gas Temperature Sensor (CALIF Models Only)
- Fuel Temperature Sensor
- Neutral/Inhibitor Switch
- Power Steering Oil Pressure Switch
- Throttle Position Sensor (TPS) & Idle Switch
- Vehicle Speed Sensor
- Relays & Solenoids
- Fuel System
- Fuel Control System
- Idle Control System
- Ignition System
- Timing Control Systems
- Emission Systems & Sub-Systems
- Canister Purge System
- Exhaust Gas RECIRCULATION (EGR)
- Positive Crankcase Ventilation (PCV)
- Miscellaneous Controls
- Diagnostic Charts
- Symbol Identification Chart
- Air Injection Valve Chart
- Air Regulator Chart
- Auxiliary Air Control (AAC) Chart
- EGR Function Chart
- Fast Idle Control Device (FICD) Chart
- Fuel Pump Chart
- Throttle Valve Switch Chart
- Injector Malfunction Chart
- Neutral Switch & A/T Control Chart
- Ecu Power Source & Ground Chart
- Radiator (Cooling) Fan Control Chart
- Start Signal Chart
- Power Steering Oil Pressure Switch Chart
- Pressure Regulator Vacuum Relief Chart
- Valve Timing Control (VTC) Chart
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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.