B3 - Check Open Between SIG RTN, PWR, GND Circuit At PCM

- Key "OFF".

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

- Measure resistance between test pin 46 and test pins 40 and 60 at the breakout box.

- Is each resistance less than 5.0 ohms?

Yes -- Go to B4. B4 - Check Signal Return Circuit Continuity

No -- Replace PCM. Remove breakout box. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)