- Using a multimeter, check for voltage by backprobing the MAF sensor connector.
- With the ignition key ON, and the engine OFF, verify
that there is at least 10.5 volts between the BATT and GND terminals of the
MAF sensor connector. If voltage is not within specification, check power
and ground circuits and repair as necessary.
- With the ignition key ON, and the engine ON, verify
that there is at least 4.5 volts between the SIG and GND terminals of the
MAF sensor connector. If voltage is not within specification, check power
and ground circuits and repair as necessary.
- With the ignition key ON, and the engine ON, check
voltage between GND and SIG RTN terminals. Voltage should be approximately
0.34–1.96 volts. If voltage is not within specification, the sensor
may be faulty.
