B8 - Check VPWR Circuit Continuity

- Key "OFF".

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

- Electronic Engine Controls (EEC) power relay disconnected.

- Measure resistance between test pins 37/57 at the breakout box and the VPWR terminal of the EEC power relay connector.

- Is resistance less than 5.0 ohms?

Yes -- Go to B9. B9 - Check VPWR Circuit Voltage

No -- Service open in VPWR circuit between the EEC power relay connector and PCM. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)