Detroit Diesel Series 60 EGR Technician Manual page 152

DDEC V TESTING
TEST B
Test B steps are as follows and should be performed in order as written.
Perform test as follows.
Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects, and
other reproductive harm.
Always start and operate an engine in a well ventilated
area.
If operating an engine in an enclosed area, vent the
exhaust to the outside.
Do not modify or tamper with the exhaust system or
emission control system.
1. Run the engine on a dynamometer to get the engine hot. If a dynamometer is not available,
run the engine until hot (> 170° F (76° C) coolant temperature).
2. Activate the VPOD outputs to 50% duty cycle using the DDDL. Visually inspect the
VNT and EGR valve for proper rod travel.
[a] If the VNT is not functioning properly, please visit the Detroit Diesel Technical
Service Letter Web Page at http://192.135.85.10/cust/sletr/revised_2004.asp and
browse for Technical Service Letter 04 TS 16 or Detroit Diesel Special Publications
Web Page at http://192.135.85.10/public/sp/spnav.asp and browse for Special
Publication Number 18SP604.
[b] If the VNT is functioning properly, no further troubleshooting is required.
NOTE:
Repeat this step three times.
3. Verify repairs.
10-12
PERSONAL INJURY
7SE60 0506 Copyright © 2005 DETROIT DIESEL CORPORATION
All information subject to change without notice. (Rev. June 2005)