Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Normal
The PCM uses information from the MAP sensor to calculate spark advance and fuel as follows: * Low MAP output voltage (low pressure) results in more spark advance. * High MAP output voltage (high pressure) results in less spark advance. * Low MAP output voltage (low pressure) results in less fuel. * High MAP output voltage (high pressure) results in more fuel.OPERATIONThe control module supplies a 5 volt reference signal to the MAP sensor and the sensor provides a path to ground through its variable resistor. The control module by monitoring the sensor output voltage can determine the manifold pressure. A closed throttle on engine coastdown will produce a relatively low MAP output, while a wide open throttle will produce a high output. At higher pressure or at Wide Open Throttle (WOT) output voltage will be about 4 to 4.8 volts. The higher the MAP voltage output the lower the engine vacuum, which requires more fuel. The lower the MAP voltage output the higher the engine vacuum. At lower pressure output voltage will be about 1 to 2 volts at idle.If you can read a diagram....you should be able to figure out which goes where....Basically 5V ref is the gray wire, pin C on the plug...signal is Bl/lt grn Pin B (middle).... sensor ground purple is Pin A.....
The PCM uses information from the MAP sensor to calculate spark advance and fuel as follows:
* Low MAP output voltage (low pressure) results in more spark advance.
* High MAP output voltage (high pressure) results in less spark advance.
* Low MAP output voltage (low pressure) results in less fuel.
* High MAP output voltage (high pressure) results in more fuel.
OPERATION
The control module supplies a 5 volt reference signal to the MAP sensor and the sensor provides a path to ground through its variable resistor. The control module by monitoring the sensor output voltage can determine the manifold pressure. A closed throttle on engine coastdown will produce a relatively low MAP output, while a wide open throttle will produce a high output. At higher pressure or at Wide Open Throttle (WOT) output voltage will be about 4 to 4.8 volts. The higher the MAP voltage output the lower the engine vacuum, which requires more fuel. The lower the MAP voltage output the higher the engine vacuum. At lower pressure output voltage will be about 1 to 2 volts at idle.
If you can read a diagram....you should be able to figure out which goes where....Basically 5V ref is the gray wire, pin C on the plug...signal is Bl/lt grn Pin B (middle).... sensor ground purple is Pin A.....
