DD12 - Check EGRP SIG Circuit For Short to Power

- Key "OFF".

- EGR Position (EGRP) sensor disconnected.

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

- Measure the resistance between test pin 27 and test pins 26, 37, and 57 at the breakout box.

- Is each resistance greater than 10,000 ohms?

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

No -- Service short circuit. Remove the breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)