DC11 - Check PWR GND Circuit to MAF Sensor
- Key Off.
- MAF sensor disconnected.
- Breakout box installed.
- PCM connected to breakout box.
- Key On, Engine Off.
- Measure the voltage between VPWR circuit and PWR GND circuit at the MAF sensor vehicle harness connector.
- Is the voltage greater than 10.5 volts?
YES -- PWR GND harness circuit from battery negative post to MAF sensor is OK. Go to DC13. DC13 - Check MAF RTN Circuit Continuity
NO -- Go to D12. DC12 - Check PWR GND Circuit Continuity