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-DATSUN1991NX 1600, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSMISCELLANEOUS CONTROLSRADIATOR (COOLING) FAN CONTROL RELAY(S)
1991 Nissan-Datsun NX 1600, Standard
Radiator (Cooling) Fan Control Relay(S)
1991 Nissan-Datsun NX 1600, StandardSECTION Radiator (Cooling) Fan Control Relay(S)
See RELAYS under RELAYS & SOLENOIDS. Also see appropriate table under RADIATOR COOLING FAN CONTROL RELAY OPERATION for relay(s) operation.
A/C SWITCH ON
| Engine Coolant Temp.°F (°C) | Vehicle Speed MPH | Radiator Fan | ||||
|---|---|---|---|---|---|---|
| Less Than 202 (94) | 50 Or More | Off | ||||
| " | 49 Or Less | Low | ||||
| 203-210 (95-99) | N/A | Low | ||||
| Greater Than 212 (100) | N/A | (1) Low; (2) High | ||||
|
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A/C SWITCH OFF
| Engine Coolant Temp.°F (°C) | Vehicle Speed MPH | Radiator Fans | ||||
|---|---|---|---|---|---|---|
| Less Than 195 (90) | N/A | Off | ||||
| 196-201 (91-94) | 12 Or More | Off | ||||
| " | 12 Or Less | Low | ||||
| 203-210 (95-99) | 50 Or More | Off | ||||
| " | 49 Or Less | Low | ||||
| Greater Than 212 (100) | N/A | (1) Low; (2) High | ||||
|
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RENDER: 1.0x
NO RELATED
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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.