System Diagnostics; On-Board Fault Detection System - Triumph 2012 Tiger 800 Service Manual

Fuel System/Engine Management

System Diagnostics

The engine management system has an on-board
diagnostics feature which allows se rv ice techn icians to
retrieve stored data from the ECM using the Triumph
diagnostic sof t w are.
Full
diagnostic software operation and how to interpret
the results are given in the Triumph Diagnostic Tool
User Guide.
The software is connected, via an interface cable, to the
motorcycle using a dedicated diagnostic plug situated
beneath the seats. By using a dedicated pl ug, no electrical
connectors associated with the system are disturbed,
reducing potential connector damage.
The software allows the user to retrieve data associated
with the system sensors and actuators, test va rious
component functions, read build data and make minor
adjustments to the set - u p of the system. The data and
tests available are described on the following pages.

On-board Fault Detection System

The on - b oard diagnostic system has two stages to fault
detection. When a fault is detected, the DSM <Diagnostic
Status Manager> raises a flag to indicate that a fault is
present and increments a counter. The counter checks the
number of instances that the fault is noted. For example, if
there is a fault in the crankshaft position sensor, the
counter will increment its count each time the crankshaft
turns through 3 60°, provided the fault is still present.
When the count begins, the fault is detected but not
confirmed. If the fau lt continues to be detected and the
count reaches a pre-determ ined threshold, the fault
becomes confirmed. If the fault is an emissions related
fault or a serious malfunction
performance, a DTC <Diagnostic Trouble Code) and
freeze-frame data will be logged i n the ECM's memory
and the M I L <Malfunction Indicator Lamp> on the
motorcycle instrument panel is illuminated. Once a fault is
confirmed, the n umber of warm-up cycles made by the
engine is counted. If the fault clears, the warm - u p cycle
counter will extinguish the M I L <Malfunction I ndicator
Lamp) at a pre determined count, and e rase the DTC and
freeze frame data from the ECM memory a t another
( higher) count.
A single warm - u p cycle is deemed to have taken place
when the following criteria have been met :
The coolant temperature must be raised to
•
no c
or more.
The coolant temperature must have risen by
•
23° C
or more from its start temperature,
no C
when is reached.
A controlled power-down sequence must
•
take place.
10.28
details of the Triumph
affecting engine
SeNice Manual Tiger 800 and Tiger 800XC
-
Note:
•
When a fault has been rectified, the M I L will
remain illuminated until sufficient non-fault
warm-up cycles have taken place to turn it
off. The M I L
extinguished if, after first rectifying the fault,
the DTC <diagnostic
caused the M I L illumination is erased from
the ECM memory
diagnostic software.
Note:
•
In most cases, when a fault is detected, the
engine management system will revert to a
'limp-home' mode. In this mode, the engine
will still function though the performance
and fuel economy
affected. In some cases, the rider may not
notice any appreciable
normal operation.
will be immediately
trouble code> that
using the Triumph
may be marginally
difference from