Husqvarna 2009 TC 250, Workshop Manual, Page: 390 / 420

S.4
Part. N. 8000 H0368 (10-2009)
FUEL INJECTION SYSTEM
Operation Manual for "DIAGNOSTIC TOOL SOFTWARE KIT" for injection
fuel feeding system
The injection fuel feeding system does not require scheduled maintenance .
The DIAGNOSTIC TOOL SOFTWARE KIT part no. 8B00 A9634 lets you test
system components in the event of a malfunction. A malfunction is indicated by
the word "FAIL" appearing in the right-hand portion of the dashboard display
when the ignition key is set to ON and the right switch is set to RUN.
The DIAGNOSTIC TOOL SOFTWARE KIT (A) is composed of:
- "Diagnostic Tool" Software CD-ROM, including User Guide (PDF), Operation
Manual (PDF);
- User Guide hard-copy;
- Operation Manual hard-copy;
- PC cable for connection to electronic control unit (ECU) connector.
After installing the Diagnostic Tool Software according to the instructions provided
in the User Guide, proceed as follows:
- remove the headlamp fairing as described in Section "M";
- slip off the cap (B) of the ECU interface connector (C);
- connect the Kit cable (D) to the connector (C) and the serial port (E) of your
PC;
- turn the ignition key (F) to ON and set the right switch (G) to RUN;
- start the "Diagnostic Tool" software you have installed and perform the re -
quired tests.
If the throttle body (H) has been removed and/or replaced, the TPS
will need to be re-initialised using options "TPS idle setting" (see
Operation Manual) and "Feedback Correction" (Operation Manual).
For "Feedback Correction Value", see fig. 9-3-4 on page S.5.
This diagnostic software can check the following injection param-
eters:
1 - AIR TEMPERATURE (air temperature in the intake manifold);
2 - WATER TEMPERATURE (engine coolant temperature);
3 - AIR PRESSURE (atmospheric pressure in current location and at current
altitude);
4 - THROTTLE POSITION (throttle opening rate);
5 - TILT SENSOR (detects rollover);
6 - O2 SENSOR (detects lean or rich mixture);
7 - BATTERY SENSOR (battery voltage);
8 - SENSOR POWER SUPPLY (power supply unit feeding the sensors);
9 - GEAR SHIFT POSITION (currently selected gear shift position);
10 - INJECTOR (fuel injection pulse width);
11 - IGNITION COIL (device that stores energy in the reel and discharges it to
the spark plug);
12 - O2 SENSOR HEATER (heats O2 sensor up to a temperature that will
provide a stable output).