NB10 - Check PCM For Short to Power

- Key "OFF".

- Breakout box installed.

- Powertrain Control Module (PCM) connected to breakout box.

- Disconnect Ignition Control Module (ICM) (Pins 7-12).

- Measure voltage between test pin 4 at the breakout box and chassis ground.

- Key "ON", engine "OFF".

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

- Is any voltage reading greater than 10.5 volts?

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

No -- Go to NB11. NB11 - Check PCM For Short to Ground