2011 nissan maxima mass air flow sensor problems

And a signal wire goes to the ECU back, informing the ECU about the state of temperature of the ambient air.Ī reference volt is a constant voltage given by the ECU to the electronic component in the car, which does not change its value due to variation in temperature, loading on the device, or passage of time. In mass air flow there is an air intake temperature (IAT) sensor integrated into the MAF sensor, which has two additional wires, a power, and a signal wire.Ī power wire comes from the ECU, which is usually a 5-volt reference voltage. The MAF’s signal wire gives the signal to the ECU. The contamination can come in the form of spider webs, potting compound from the MAF sensor itself, dirt that gets attached to oil on the MAF from an over-oiled.

These symptoms indicate a MAF that has a contaminated hot wire. The ground wire gives earth to the MAF sensor and is usually taken from PCM, or sometimes, it is earthed somewhere in the chassis. There are a number of driveability issues that arise from faulty MAF sensors. Usually, this hot power wire is taken from the fuse box’s fuse and relay. 5 Wire Mass Air Flow Sensor Wiring Diagram 5 Wire Mass Air Flow Sensor Wiring DiagramĪ five-wire MAF sensor consists of five wires.Ī MAF sensor power wire gives a positive current to the MAF sensor.

2011 nissan maxima mass air flow sensor problems