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DB6 - Check EGRT Circuit For Shorts to Power
- Key "OFF".
- Disconnect EGR Temperature (EGRT) sensor.
- Key "ON", engine "OFF".
- Measure voltage between EGRT circuit at the EGRT sensor vehicle harness connector and the battery negative post.
- Is voltage less than 1.0 volt?
Yes -- Go to DB7. DB7 - Induce Opposite Code
No -- Service short circuit. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)