Operation CHARM: Car repair manuals for everyone.

System Specifications

ATMOSPHERIC PRESSURE (PA) SENSOR
Atmospheric Pressure Output Voltage
5 in. Hg. (125 mm. Hg.) 2.5 Volts
10 in. Hg. (250 mm. Hg.) 2.0 Volts
15 in. Hg. (375 mm. Hg. 1.5 Volts
20 in. Hg. (500 mm. Hg.) 1.0 Volts
25 in. Hg. (625 mm. Hg.) 0.5 Volts


COOLANT TEMPERATURE (TW) SENSOR
Coolant temperature Resistance
-4°F (-20°C) 20K Ohms
32°F (0°C) 5K Ohms
104°F (40°C) 1K Ohms
176°F (80°C) 350 Ohms
248°F (120°C) 100 Ohms


INTAKE AIR TEMPERATURE (TA) SENSOR
Intake Air temperature Resistance
-4°F (-20°C) 20K Ohms
32°F (0°C) 5K Ohms
104°F (40°C) 1K Ohms
176°F (80°C) 350 Ohms
248°F (120°C) 100 Ohms


MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP)
Manifold Absolute Pressure Output Voltage
5 in. Hg. (125 mm. Hg.) 2.5 Volts
10 in. Hg. (250 mm. Hg.) 2.0 Volts
15 in. Hg. (375 mm. Hg.) 1.5 Volts
20 in. Hg. (500 mm. Hg.) 1.0 Volts
25 in. Hg. (625 mm. Hg.) 0.5 Volts


OXYGEN SENSOR
Mixture Output Voltage
Lean Less Than 0.4 Volts
14.7 to 1 Stoichiometric 0.4 - 0.6 Volts
Rich More Than 0.6 Volts


THROTTLE ANGLE SENSOR
Throttle Position Output Voltage
ThrottleClosed (Idle) 0.1 Volts
1/4 Throttle 0.5 Volts
1/2 Throttle 2.0 Volts
3/4 Throttle 3.25 Volts
Full Throttle 4.5 Volts


FUEL INJECTOR
Connector Terminal Resistance 1.5 - 2.5 Ohms


FUEL INJECTOR RESISTOR
Terminals B,C, D, E, to A 5 - 7 Ohms