I've Honda Civic LX 1997, 120,000 Mi. My CEL came on right before I need to do a smog check. The error code is 5, MAP Sensor (Manifold Absolute Pressure) mechanical problem. How do I test the sensor (or any web-link)? I want to make sure it is the problem on the MAP sensor before I replace it with a new one.
There is 3 wires go into the sensor Yellow, Green, and Red. Look like the the Red and Green come from the sensor below the air filter. Can I check the voltage on the Yellow and see if it vary when I rev the engine? What would be the voltage range and where do I put the voltage ground? Also any link to sensor specification would really be appriciated.
Is it possible that the problem is not on the MAP Sensor? If so what can cause the error code 5?
Thanks in Advance Don