4. Turn key switch to ON but do not start engine.
Indicator light must come ON indicating there is
continuity in the wiring harness and there is a signal
from engine and pump controller.
5. Start engine.
6. Actuate boom up function and then arm in function.
Indicator light must be ON and the brightness must
If light goes OUT or brightness does not increase,
check wiring harnesses, solenoid coil, rear pump
pressure sensor, arm in pilot pressure sensor, and
boom up pressure switch. (See procedure in Group