X75 - Check Fuel Pump Circuit For Short to Ground
- Key "OFF".
- Breakout box installed, Powertrain Control Module (PCM) disconnected.
- Constant Control Relay Module (CCRM) disconnected.
- Measure resistance between test pin 22 and the battery negative post.
- Is resistance greater than 10,000 ohms?
Yes -- Replace PCM. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)
No -- Service fuel pump circuit short to ground. Remove breakout box. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)