Honda Workshop Service and Repair Manuals

Intake Air Temperature Sensor: Electrical Specifications

Engine Coolant Temperature Sensor

-18°C (0°F).......................................................................................................................................................................................................25K ohms
-7°C (20°F)....................................................................................................................................................................................................13.5K ohms
4°C (40°F).......................................................................................................................................................................................................7.5K ohms
20°C (68°F).....................................................................................................................................................................................................3.4K ohms
38°C (100°F)...................................................................................................................................................................................................1.8K ohms
70°C (160°F).....................................................................................................................................................................................................450 ohms
100°C (212°F)...................................................................................................................................................................................................185 ohms

Idle Air Control (IAC) Valve

Between terminals 1 and 2........................................................................................................................................................................above 20 ohms
Between terminals 3 and 4........................................................................................................................................................................above 20 ohms

Manifold Absolute Pressure (MAP) Sensor

Altitude (meters / feet) related to voltage:

Below 305 / 1000..........................................................................................................................................................................................3.8 - 5.5V
305-610 / 1000-2000.....................................................................................................................................................................................3.6 - 5.3V
914-1219 / 3000-4000...................................................................................................................................................................................3.3 - 5.0V
1219-1524 / 4000-5000.................................................................................................................................................................................3.2 - 4.8V
1524-1829 / 5000-6000.................................................................................................................................................................................3.0 - 4.6V
2133-2438 / 7000-8000.................................................................................................................................................................................2.8 - 4.3V
2743-3048 / 9000-10,000..............................................................................................................................................................................2.5 - 4.0V

Intake Air Temperature (IAT) Sensor

20°F (-7°C)....................................................................................................................................................................................................13.5K ohms
68°F (20°C).....................................................................................................................................................................................................3.4K ohms
100°F (38°C)...................................................................................................................................................................................................1.8K ohms

Oxygen Sensor

Normal voltage range........................................................................................................................................................................................0.1 - 1.0V

Power Steering Pressure Switch

Low pressure.............................................................................................................................................................................................................open
High pressure....................................................................................................................................................................................................continuity

Throttle Position Sensor

Signal voltage to ECM at idle...................................................................................................................................................................less than 1.25V
Signal voltage to ECM at WOT...................................................................................................................................................................approx. 4.5V