DC16 - Check PWR GND Circuit Continuity

- Key "OFF".

- Mass Air Flow (MAF) sensor disconnected.

- Breakout box installed, Powertrain Control Module (PCM) disconnected.

- Measure resistance between PWR GND circuit at the MAF sensor vehicle harness connector and battery negative post.

- Is resistance less than 10 ohms?

Yes -- Go to DC17. DC16 - Check PWR GND Circuit Continuity

No -- Service open circuit. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)