NC5 - Check IDM Circuit For Shorts to Power (Excluding VREF)

- Key "OFF".

- Breakout box installed.

- Powertrain Control Module (PCM) and Ignition Control Module (ICM) disconnected.

- Measure voltage between test pin 4 and test pin 40 or 60 at the breakout box.

For Short To B+:

- Key "OFF".

- For Short To Keypower or VPWR:

- Key "ON", engine "OFF".

- Is any voltage reading greater than 10.5 volts?

Yes -- Service short circuit. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Go to NC6. NC6 - Check IDM Circuit For Short to VREF and PIP