Husqvarna PT26D Workshop Manual page 128

TROUBLE SHOOTING
Main power relay
The battery disconnector (Main power relay)
receives its voltage via an miniature circuit-
breaker of 1 A on the circuit board. If the cur-
rent out to the relay exceeds this current, the
voltage is automatically disconnected. Dis-
connect J35 (and the oil pressure switch) and
turn the ignition key to the ON position.
Measure that there is outgoing voltage 12 V
from the card between the pins on J35. If
there is voltage on J35, the cable out to the
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relay is faulty or on the relay or that someone
Measuring coil resistance in J35
has connected an extra load on this circuit.
Measure the coil resistance on the main
power relay between J35:1 and J35:2, guide-
line value 19.5 - 20 
Placement of J35, see "Circuit board" on
page 157.
Solenoid clutch
LEDs LD8 green and LD19 red. Fuse FU1.
Interlocking, see "Safety System" on page 40
and "Circuits" on page 37.
Split the connector to the solenoid clutch
behind the lower part of the radiator. Check
that no damage has been caused to the
cables by the moving parts. Measure with an
ohmmeter between the cables. Coil resist-
ance approx. 2 Ohm. Secure the cable with
plastic tie after measuring, so that it is not
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Measuring coil resistance in solenoid clutch
subjected to abrasion.
If coil resistance is correct, but the LEDs indi-
cate a fault, check the cabling between the
connector and the circuit board with an ohm-
meter.
Lift function
When lifting, the two left-hand solenoid
valves in valve block 5 in hydraulic diagram,
see page 43, are actuated. LEDs LD5/LD16
will then indicate one of the solenoid valves.
To get the other valve to indicate, run to the
weight transfer position and check with LEDs
LD4/LD15.
Placement of LEDs, see Appendixes "Circuit
board" on page 157.
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