Why does my D21 have a higher DC voltage?
To be a little more specific since D21’s four cylinder engine will breathe in more air at, let’s say, 2,500 RPM’s than when it’s sitting at an idle of 900 RPM’s this will cause the MAF sensor to send a higher DC voltage signal to the computer than at idle. It’s as simple as that!
Why is my MAF sensor not working on my Nissan D21?
If still no voltage, then this result exonerates the the D21’s MAF sensor as the cause of the MAF code or MAF issue, since without this voltage, the MAF sensor will not produce a signal to the computer. Finding and repairing the source of this missing voltage will resolve the MAF sensor issue with your Nissan D21 Pick Up.
How is air flow measured on a Nissan D21?
And this measurement of the air flow is sent to the D21’s fuel injection computer as an analog DC voltage signal.
What is the diagnostic code for a Nissan?
Nissan Diagnostic Fault Codes List. Nissan Logo. P0100 Airflow Circuit Malfunction. P0101 Wrong indicator / air flow meter not adjusted. P0102 Low air mass meter reading. P0103 High air mass meter reading. P0104 Malfunction of the air mass meter.
To be a little more specific since D21’s four cylinder engine will breathe in more air at, let’s say, 2,500 RPM’s than when it’s sitting at an idle of 900 RPM’s this will cause the MAF sensor to send a higher DC voltage signal to the computer than at idle. It’s as simple as that!
And this measurement of the air flow is sent to the D21’s fuel injection computer as an analog DC voltage signal.
How to test the MAF sensor on a Nissan D21?
Testing your Nissan D21 Pick Up’s MAF sensor, to see if it’s bad or not, can be done in three easy and simple tests. They’re all done with a multimeter, since you don’t need an automotive scan tool to do it and this article will show you how.
What should the voltage be on an OBDII sensor?
That being said, according to the Nissan Shop Manual the correct voltage for the AIR/FUEL RATIO SENSOR should be 1.5Volts at optimum. NOTE: OBDII scanners/ software DO NOT read the voltage correctly for AIR/FUEL RATIO Sensors. To get the proper voltage from a OBDII scanner, take the value read and multiply it by 5.