Mass Airflow (MAF) Sensor
Remove rubber cover from electrical connector on airflow sensor. Backprobe between terminals to make voltage measurements. Unplug 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 | Readings |
|---|---|---|
| Key On | Black/Red | 10-13 Volts |
| Key On | White | 0-0.3 Volts |
| Key On | Black | Zero Volts |
| Engine On | Black/Red | 13-14 Volts |
| Engine On | White | 0.8-1.2 Volts |
| Engine On | Black | Zero Volts |