Spn 411/Fmi 1 - Detroit Diesel Series 60 DDEC VI Troubleshooting Manual

15.2

SPN 411/FMI 1

15.1.1.1 Verify Repairs
Verify repairs as follows:
1. Turn the ignition OFF. Reconnect all connectors.
2. Turn the vehicle ignition ON, and clear codes.
3. Start and run the engine for one minute. Stop the engine.
4. Check for codes
[a] If no codes are present, troubleshooting is complete.
[b] If code 411/0 is not logged but other codes are logged, troubleshoot the other codes.
[c] If code 411/0 and other codes are logged repeat troubleshooting procedure. If no
error is found, contact the Detroit Diesel Customer Support Center (313–592–5800).
15.2 SPN 411/FMI 1
This diagnosis is typically EGR differential pressure failed low.
15.2.1 EGR Components Check
Check as follows:
1. Check for multiple codes.
[a] If codes other than 411/1 are present, service them first.
[b] If only 411/1 is present, go to step 2.
2. Using DDDL 7.0, monitor the coolant temperature, EGR Delta P, EGR PW, EGR valve
position and EGR temperature.
3. Idle the engine with the EGR PW less than 3% and the EGR position less than 5% (NO
EGR FLOW COMMANDED).
4. Is the EGR Delta P greater than 130 counts and the EGR temperature greater than 40°
above the coolant temperature?
[a] If yes, replace the EGR valve. Refer to section 15.2.1.1.
[b] If no, go to step 5.
5. Turn the engine OFF.
6. Disconnect the EGR Delta P Sensor and inspect the EGR tubes for blockage.
[a] If the tubes are blocked, clean them. Refer to section 15.2.1.1.
[b] If the tubes are not blocked, replace the EGR Delta P Sensor. Refer to section 15.2.1.1
15-4
PRELIMINARY 6SE567 0512 Copyright © 2005 DETROIT DIESEL CORPORATION
All information subject to change without notice.