Triumph DAYTONA 675 Service Manual page 196

Ignition timing
Same as 'ignition advance'.
Injector pulse time
The time during which an injector remains open (i.e.
delivering fuel).
Lambda 0 Sensor
2
The Lambda sensor measures the Oxygen levels in the
exhaust gases and feeds this information to the ECM.
Based on this information, adjustments to air/fuel ratio are
made.
Long term fuel trim
Fueling after adapting to the engine's long term fueling
requirements (closed loop only). See also short term fuel
tri m.
MAP sensor
Manifold Absolute Pressure (the air pressure in the intake
system). Measured after the throttle valves. This reading is
compared to the ambient pressure reading to allow the
ECM to calculate engine load.
MIL
Malfunction Indicator Lamp.
Ill uminates when most Diagnostic Trouble Codes (DTCs)
are set.
Open circuit
A break in an electrical circuit - current cannot flow.
Over temp
High temperature within the Electronic Control Module
(ECM) caused by an internal or external failure.
Primary throttle position sensor
Sensor for the primary (lower) throttle position.
Primary throttle stepper motor
Stepper motor used to vary throttle opening at idle and
when the engine is cold.
Purge valve duty cycle
The time the purge valve is open in an open/close cycle,
expressed as a percentage of the cycle time.
Service Manual - Daytona 675, Street Triple and Street Triple R
L UMP
Fuel System/Engine Management
Road speed sensor
Gearbox mounted sensor which delivers information to
the ECM. This is converted to the road speed value that is
then displayed on the speedometer.
Secondary air injection
The secondary air injection system helps reduce levels of
pollutants in the exhaust gases. It does this by introducing
a small amount of air into each exhaust port which
promotes further combustion of the fuel mixture in the
exhaust system after it has left the combustion chamber.
Sensor supply voltage
Supply voltage to the system sensors (nominally 5 Volts).
Short circuit
A 'short cut' in an electrical circuit - current by-passes the
intended circuit (usually to earth).
Short term fuel trim
A correction applied to the fuel mixture during closed
loop catalyst operation. This, in turn has an effect on the
long term fuel trim in that, if an engine constantly requires
mixture correction, the long term fuel trim will adapt to
this requirement thus reducing the need for constant
short term adjustment.
Sidestand status
The 'up' or 'down' position of the side stand.
Target dwell time
The actual time from coil 'on' to coil 'off'.
Throttle position
The position of the throttle butterfly given as a percentage
of the movement range. When the data is displayed on
the diagnostic software, fully open need not be 100% nor
fully closed 0%.
Throttle voltage
Voltage at the throttle potentiometer.
TDC
Top Dead Centre.
Vbatt
Battery voltage.
1 0.17