Operating Instructions For The "Diagnosis Software Kit" On The Fuel Injection - Husqvarna TE 250 Workshop Manual

Operating instructions for the "DIAGNOSIS SOFTWARE KIT" on the fuel
injection system
Premised that the fuel injection system doesn't need any programmed
maintenance, the Diagnosis Software Kit code no. 8000 A9634 allows to effect
the check of the components of the fuel injection system in case of malfunction.
The neutral green warning light shows the malfunction, with the ignition key in
ON position and the right commutator in RUN position, in the following way:
a) With the GEARBOX NOT in NEUTRAL position: the warning light FLASHES
INTERMITTENTLY.
b) With the GEARBOX in NEUTRAL position: the warning light IS INITIALLY
CONSTANTLY ON then it FLASHES TWICE IN RAPID SUCCESSION then
returns TO BE CONSTANTLY ON. This cycle repeats itself.
The "DIAGNOSIS SOFTWARE KIT" (A) consists of:
- CD containing "Diagnostic Tool" Software, User's Guide (PDF file), Operation
Manual (PDF file);
- User's Guide handbook for the Software Use;
- Operation Manual handbook;
- Connecting cable PC-ECU interface connector.
After DIAGNOSIS SOFTWARE loading, according with the User's Guide
instructions, proceed as follows:
- remove the front headlamp holder as shown on page M.30;
- remove the plug (B) from the ECU connector interface (C);
- connect the cable (D) of the kit to the connector (C) and to the serial port (E) on
PC;
- turn the ignition key (F) in ON position then place the R.H. commutator in RUN
position;
- start the "Diagnostic Tool" Software previously installed, then carry out the
controls.
If the throttle body (H) will be removed and/or replaced, it is necessary
to adjust the T.P.S. again selecting the options "T.P.S. Idle Adjust-
ment Command" (page 32 on Operation Manual) and "Feedback
Adjustment Command" (page 29 on Operation Manual). See fig. 9-3-
4 on page S.4 for the "Feedback Adjustment Value".
The components of the fuel injection system that can be checked
with this diagnosis software are the followings:
1- AIR TEMPERATURE (Air temperature in the intake manifold);
2- COOLANT TEMPERATURE (Engine coolant temperature);
3- ATMOSPHERIC PRESSURE (Atmospheric pressure in the intake manifold
in the current position and altitude);
4- THROTTLE POSITION
5- TILT SENSOR (SMR:senses rollover of the vehicle)
6- O2 SENSOR (Senses rich or lean combustion mixture )
7- BATTERY SENSOR (Battery voltage)
8- SENSORS SOURCE (It supplies energy to the sensors)
9- GEARSHIFT POSITION (Current gear position)
10- INJECTOR (Pulse width of fuel injector)
11- IGNITION COIL (It accumulates energy and discharges said energy to spark
plug)
12- O2 HEATER (It warms the O2 sensor to a temperature suitable for the sensor
to give stable output)
Part. N. 8000 B0148 (02-2008)
FUEL INJECTION SYSTEM
S.3
C
B