Triumph TIGER Service Manual page 177

Fuel System/Engine Management
The engine management
diagnostics feature which allows service technicians to
retrieve stored data from the ECM using
service tool. Full details of the tool's operation and
how to interpret the results are given elsewhere in
this section.
The tool is connected to the motorcycle using a dedicated
diagnostic plug situated beneath the seat. By using a
dedicated plug, no electrical connectors associated with
the system are disturbed, reducing potential connector
damage.
The tool allows the user to retrieve data associated with
the system sensors and actuators, test various component
functions, read build data and make minor adjustments to
the set-up of the system. The data and tests available are
described on the following pages.
a _. !
The on-board diagnostic system has two stages to fault
a
detection. When 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
a in
there is fault the crankshaft position sensor, the
counter will increment its count each time the crankshaft
turns through 360°, provided the fault is still present
When the count begins, the fault is detected but not
confirmed. If the fault continues to be detected and the
count reaches a pre-determined threshold, the fault
becomes. confirmed. If the fault is an emissions related
fault or a serious malfunction affecting engine
performance, a DTC (Diagnostic Trouble Code) and
freeze-frame data will be logged in the ECM's memory
and the MIL (Malfunction Indicator Lamp) on the
is
motorcycle instrument panel
confirmed, the number of warm-up cycles made by the
engine is counted. If the fault clears, the warm-up cycle
counter will extinguish the MIL (Malfunction Indicator
Lamp) at a pre determined count, and erase the DTC and
freeze frame data from the ECM memory at another
(higher) count.
A single warm-up cycle is deemed to have taken place
when the following criteria have been met:
• The coolant temperature must be raised to
72°C or more.
• The coolant temperature must have risen by
23°C or more from its start temperature,
when 72°C is reached.
• A controlled power-down
take place. •
10.22
an on
system has -board
Triumph
a
illuminated. Once a fault is
sequence must
Manual - Tiger
Service
Note:
• In most cases,
when a fault is detected, the
engine
management system will revert to a
mode.
'limp-home'
will still function though the performance
and fuel economy
affected. In some cases, the rider may not
any appreciable
notice
normal
operation.
Ic'
'/,"
Tool
Triumph Diagnostic
Described on the following pages is the range of
information which can be retrieved from the ECM's
memory and the adjustments which can be performed
using the Triumph service diagnostic tool.
The tables indicate which tests are performed by the on-
board system and what information can be retrieved by
the Triumph diagnostic tool.
Full details of how to operate the tool and how to interpret
the data follow later in this section.
In this mode, the engine
may
be marginally
difference from
UMW