Product description

A visual inspection of all wiring and connectors is the first thing to do when evaluating a sensor for diagnosis.  Also visually inspect the harness itself to see if there are any signs of friction, corrosion, or broken wires.  On the CNG/LPG differential pressure sensor, there are two hoses connected to the sensor.  These hoses should be inspected for any cracking or melting.  If the hose is damaged in any way, it should be replaced.  Also check that the hose is blocked if there is no obvious damage.  Disconnect the hose and clean it out.  If the hose cannot be removed, replace it.  To perform an electrical test on a differential pressure sensor, you will need a voltmeter set to DC voltage and a backpressure meter.  Before performing any tests on the sensor, check the battery with a multimeter to make sure it is fully charged.  The voltage reading on the battery should be at least 12.6 bolts.  Most differential pressure sensors have 5 volts reference, ground, and signal wires.  You may need to check the service information to find out which wires are on the CNG/LPG differential pressure sensor you are testing.