Gap Diagnostic IIDTool - 4.6 Function “Calibration” of systems and components

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IIDTool
GAP Diagnostic 2019-07-15 All Rights Reserved
User Manual : Version 33, Firmware V3.0
2
nd
element
2
nd
Fault Code
Element
1
st
character. Systems on
which the fault is present.
3
rd
character. Subsystem*
Pxxxx P for Powertrain
1=Air/Fuelratio
2= Fuel injection
3=Ignitionandmisre
4= Emission control
5= Engine speed and idle speed
6= ECU and output circuits
7, 8 and 9= Transmission
A,B and C=Hybrid system
Cxxxx C for Chassis
Bxxxx B for Body or Accessories
Uxxxx U for Communication network
Table 22. 2
nd
element interpretation
*Somemanufacturerspeciccodesdonotfollowthisnomenclature.
Conclusions on the interpretation of the 2
nd
fault code element
When the 2
nd
element begins with a P,C or B = generally precise information pointing directly to the
origin of the appearance of the fault.
When the 2
nd
element begins with a U = typically occurs as a result of the appearance of faults on
anothersystem(startingwithP,C,B).Mayindicatea“consecutive”faultcausinga“cascadinge󰀨ect”.
Generated by a loss of communication or reception of invalid data sent by the ECU creating the cas-
cade.
Notethattheinterpretationofconsecutivetypefaultsobtainedasaresultofacascadee󰀨ectcanbe
challenging(diagnosticprocedureincaseofcascadinge󰀨ectsection 3.2.1).
If faults witha “lost communication with ...” denition arestillpresent and that there are no other
symptoms observed, they can be ignored. These faults are recorded from time to time for no apparent
reason.IffaultswiththeUprexandunrelatedtoacommunicationerrorare,simplycorrecttheissues