Husqvarna 2011 TE 630 Workshop Manual page 428

Fuel pump inspection
Remove the pump as described on page S.2.
fuel reserve sensor
Make sure there is no fuel left in the sensor and then set the meter to the
"Impedance" scale and measure across contacts T3 and T4. Correct value
is as follows: 1.3 KOhm (+/- 10%) at 20 °C.
pump operation
Connect contacts T5 and (-) T2 to a power supply unit with constant 12V
output and make sure that the pump runs.
Never keep the pump connected to the power supply unit for more
than 3 seconds in a row.
Part. N. 8000 H2051 (02-2010)
FUEL INJECTION SYSTEM
T1
T2
T3
T4
T5
S.7
Terminal 1
Not occupied
Terminal 2
Pump power supply
Negative terminal -
Terminal 3
Thermistor Ground
(Reserve)
Terminal 4
Thermistor Ground
(Reserve)
Terminal 5
Pump power supply
Positive terminal +