ESA-34-045

SB-10049800-1137
BULLETIN NUMBER
34-045
IMAGE
SECTION
Wiring and Lighting - 34
SUBJECT
ESA for 2013 QV Chassis
RELEASE DATE
09/14/2012
CONDITION
Current version ESA 4.1.0.17 will not function properly and may corrupt engine settings if
employed on the 14 prototype 2013 emissions compliant chassis listed. Do not connect
ESA 4.1 to these chassis.
A special version of ESA may be required for the listed chassis and this bulletin will be
updated with appropriate instruction if/when such version is available. The next standard
ESA update, scheduled for November 2012, will accommodate listed chassis, regardless of
whether an interim version developed.
CHASSIS AFFECTED
14 T270s, T370s, T470s, T660s, T800s and W900s built between 05/10/12 – 08/25/12,
listed below. These chassis are also identified in SIR with campaign code 34-045. (See
the Action section for more information about the campaign code.)
ACTION
Campaign code 34-045 does not indicate that a repair is necessary. This campaign
code is listed in SIR to call dealer attention to the special condition for listed chassis.
Do not connect ESA 4.1 to chassis listed. If this restriction creates a repair problem,
contact the Engine Support Group or your District Service Manager as appropriate. This
bulletin will be updated when ESA becomes available and campaign code 34-045 will be
removed from SIR when standard ESA may be employed with these chassis.
WARRANTY
Standard warranty applies. This bulletin is for information only.
BACKGROUND
When new platform vehicles are developed, Kenworth normally builds a small number of
these to evaluate design implementation, manufacturing systems, parts inventory programs,
service and other considerations. These prototype vehicles are identified as Quality
Validation or “QV” chassis. The vehicles listed are QV for implementation of 2013
emissions standards and as such require special consideration until all support systems are
in place for standard production of the same design, in this instance, implementation of
2013 ESA software.