World Transmission Wt Diagnostic Codes - PREVOST Le Mirage XL Owner's Manual

TECHNICAL INFORMATION
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 Datareader
(DDR). Access to the ignition cycle counter and event counter is through the DDR only.
Code List Main Code
Position
d1
d2
d3
d4
d5
Displayed on Shifter Display and 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.
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 ac-
tive (shifter will display "MODE ON" or the DDR
will display "YES"). Will be set to "off" when
conditions exist to indicate fault condition is
gone.
Sub Code
21 12
41 12
23 12
34 12
56 11
Note:
All information is available with a DDR.
Active Ignition Cycle
Indicator
YES
YES
NO
NO
NO
YES= Ignition cycle counter and event
ACTIVE=
"MODE ON"
Ignition cycle counter
Used to clear diagnostic codes that are inactive
from the code list in memory. Counter is incre-
mented each time a normal ECU powerdown
occurs following clearing of the Active Indicator.
Code will be cleared from the list when the
counter exceeds 25.
Event counter
Used to count the number of occurrences of a
diagnostic code that occur prior to the incident
being cleared from the code list. The most re-
cent code will be in position "d1". If the most re-
cent code is one which is already in the code
list, that code will be moved to position "d1", the
Active Indicator will be turned "on" (shifter will
display "MODE ON" or the DDR will display
"YES"), the Ignition Cycle Counter is cleared
and "1" is added to the Event counter.
5 - 10
Event Counter
Counter
00 10
00 04
08 02
13 01
22 02
counter are not available on
shifter display