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Home >> Honda >> 1990 >> Prelude L4-1958cc SOHC >> Repair and Diagnosis >> Specifications >> Pressure, Vacuum and Temperature Specifications >> Powertrain Management >> System Specifications
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System Specifications


COOLANT TEMPERATURE (TW) SENSOR


Coolant Temperature/Sensor Resistance
-20°C (-4°F) 15K Ohms
0°C (32°F) 5K Ohms
40°C (104°F) 1K Ohms
80°C (176°F) 375 Ohms
120°C (248°F) 100 Ohms


INTAKE AIR CONTROL TEMPERATURE (TA) SENSOR


Intake Air Temperature/Sensor Resistance
-20°C (-4°F) 15K Ohms
0°C (32°F) 5K Ohms
40°C (104°F) 1K Ohms
80°C (176°F) 375 Ohms
120°C (248°F) 100 Ohms


TWO-WAY VALVE


Valve opens when applying:

Vacuum 5-15mmHg (0.2-0.6 in.Hg)
Pressure 10-35mmHg (0.4-1.4 in.Hg)


VAPOR PURGE CONTROL


Vapor Purge Control is active when both:

Coolant temperature is above 63°C (145°F)
Intake air temperature is below 65°C (149°F)

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