Gap Diagnostic IIDTool - Faults Decoding; Structure of Fault Codes Provided by the Iidtool; Code Elements

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IIDTool
GAP Diagnostic 2019-07-15 All Rights Reserved
User Manual : Version 33, Firmware V3.0
4.3.3 Faults decoding
Fault codes shown by the IIDTool are based in part on the list of DTC Fault codes (Data Trouble Code)
fromtheISO15031standardspecication*.ThesestandardizedcodesarecomplementedbyLand
Rover’smanufacturerspeciccodes.TheIIDTooldecodesfaultcodesandprovidesthedescription.
Here’s the structure:
*L322-02, L322-06 and L316, some ECUs do not respect this standard.
Structure of Fault codes provided by the IIDTool
Thecodeconsistsoffour(4)distinctelementssometimesfollowedbyatextualdenitionreferringto
one of the elements (Def):
Code
Structure
x/x – Axxxx – xx – (xx) abcdef – abcdef
Code
Element
1
st
2
nd
3
rd
4
th
Denitionof2
nd
Denitionof3
rd
Example 2/5 C1A27 11 58 Compressor Circuit
General electrical failure,
short to ground
Table 21. Structure of Fault codes provided by the IIDTool
Note : L322-02, L322-06 and L316, some ECUs do not follow this nomenclature.
Code Elements
1
st
Element :Prex,displayedonlywhentheIntegratedInterfaceII is used, indicating the fault num-
ber and total number of faults in memory of a given ECU.
Note : A total number of faults higher than 9 is indicated by a +.
2
nd
Element : Alphanumeric code of 5 characters, standardized DTC (Data Trouble Code).
Denition
Thetextualdenitionofthesecondelementislocatedafterthe4thelementofthefaultcodeprovided
by the IIDTool.
Structure of the 2
nd
element (Example : A xxxx)
1
st
character : Letter indicating the system on which the fault relates to (see table on next page)
2
nd
character : Fault code origin (optional information), 0=from the ISO standard, 1=manufacturer
specic
3
rd
character : Subset showing the fault subsystem (see table on next page, code P only)
4
th
at 5
th
character : Defective component and nature of the fault