World Transmission Wt Diagnostic Codes - PREVOST Motorcoach XL Series Operator's Manual

WORLD TRANSMISSION (WT) DIAGNOSTIC CODES
Diagnostic code memory
Diagnostic codes are logged in a list in memory (sometimes referred to as the queue), positioning the most
recently occurring code first and containing up to five codes. The codes continued in the list have the
information recorded as shown in the chart below. Access to the code list position, main code, sub code and
active indicator is through either the shifter display or the Pro-Link Diagnostic Data reader (DDR). Access to
the ignition cycle counter and event counter is through the DDR only.
Code
List
Position
d1
d2
d3
d4
d5
Displayed on shifter display and DDR
NOTE
: All information is available with a DDR.
The following paragraphs define the different parts
of the code list.
Code list position:
The position 1 through 5 which a code occupies in
the code list in memory. Positions are shown as
"d1" (Diagnostic Code #1) through "d5."
Main code
The general condition or area of fault detected by
ECU.
Main Sub
Code Code
21 12
41 12
23 12
34 12
56 11
Active
Indicator
YES
YES
NO
NO
NO
YES=
ACTIVE=
"MODE ON"
Sub Code
The specific area or condition under the main
code in which the condition was detected.
Active Indicator
Will be turned "on" when a fault condition is active
(shifter will display "MODE ON" or the DDR will
display "YES").
conditions exist to indicate fault condition is gone.
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TECHNICAL INFORMATION
Ignition Event
Cycle Counter
Counter
00
00
08
13
22
Ignition cycle counter and event
counter are not available on
shifter display
Will be set to "off" when
10
04
02
01
02