AC10 - Isolate Shorts In PCM

- Key "OFF".

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

- Ignition Control Module (ICM) connected.

- Measure voltage between test pin 56 and test pin 16 at the breakout box.

- Crank engine, record reading.

- Is voltage between 3.0 and 7.0 volts?

Yes -- Go to AC11. AC11 - Check Fuel Pump

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