Mass Airflow (MAF) Sensor
Remove rubber cover from electrical connector on MAF sensor. Backprobe between MAF sensor terminals to make voltage measurements. Unplug MAF sensor connector to make resistance measurements. See MAF SENSOR TEST SPECIFICATIONS table. If readings are not as specified, check wiring. See WIRING DIAGRAMS article. If wiring is okay, replace airflow sensor.
MAF SENSOR TEST SPECIFICATIONS
| Ign. Switch | Wire Colors | Volts |
|---|---|---|
| Key On | Black/Red | 10-13 |
| Key On | White | 0-0.3 |
| Key On | Black | Zero |
| Engine On | Black/Red | 13-14 |
| Engine On | White | 0.8-1.2 |
| Engine On | Black | Zero |