J3 - Check Fuel Pump Circuit For Short to Power

- Key "OFF".

- Fuel pump relay disconnected.

- Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box, leave PCM disconnected.

- Key "ON", engine "OFF".

- Measure voltage between test pin 22 at the breakout box and battery negative post.

- Is voltage less than 1.0 volt?

Yes -- Go to J4. J4 - Check Fuel Pump Circuit For Short to Ground

No -- Service short circuit. Remove breakout box. Reconnect all components. Attempt to start vehicle. If vehicle fails to start, replace PCM. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)