5 Testing
The following operational events and diagnostic recommendations are based on conditions identified by the Detroit Diesel Customer Support Center. The recommended troubleshooting procedures are accurate as of April 2005.
Troubleshooting SID 146: Refer to "4.3.2 TROUBLESHOOTING SID 146" :
Fault Code s 146/0 — EGR Temperature above Normal
Fault Code s 146/1 — EGR Temperature below Normal
Fault Code s 146/2 — Data Erratic
Fault Code s 146/7 — EGR Valve not Responding
Fault Code s 146/12 — Bad Component
Inspection of EGR Cooler: Refer to appendix "10 Service Information Letters" — Service Information Letter 04 TS -38, EGR Cooler Inspection
Inspection of Thermostat Housing: Refer to appendix "10 Service Information Letters" — Service Information Letter 04 TS -57, MBE 900 Model Year 2004 EGR Overheat Condition
Verifying DDEC-ECU Parameter Settings: Refer to appendix "10 Service Information Letters" — Service Information Letter 04 TS -61, MBE 4000 PLD Parameters
Inspection of Charge Air Cooler: Refer to appendix "10 Service Information Letters" — Service Information Letter 05 TS -01, Charge Air Cooler Leaks
Note : You may also access Service Information TS letters after logging into the DDC Extranet by clicking on Support, On-Highway, Service Information, Service Information Letters, 2004-to-2006 Service Letters . To access 18SP documents, click on Support, On-Highway, Service Information, Special Publications (18SPs) .