B7 - Check Power Ground Circuit Continuity

- Key "OFF".

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

- Electronic Engine Controls (EEC) power relay disconnected.

- Measure resistance between PWR GND circuit at the EEC power relay vehicle harness connector and battery negative post.

- Is the resistance less than 10 ohms?

Yes -- Go to B8. B8 - Check VPWR Circuit Continuity

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