Husqvarna 967187001 Workshop Manual

English – 10811.2.2 Test of Seat SwitchThe switch that detects occupancy of the seat isalso supplied with +5 V on one side. The otherside leads +5 V to CCU D2 via a green lead if thedriver sits on the seat.If measuring the green lead at the seat switchand there is +5 V when the switch is activated butdoes not have a signal on CCU D2, there is prob-ably a break in the splice coupling between thecables, so inspect this coupling first.If a fault is not found on the connector, look fora break on the green lead in the cable. Start bychecking that there is +5 V on the green lead inthe connector between Cables 1 and 2, and checkthe voltage in the connector that goes to Cable1. If there is no +5 V on the pin for the green leadin the connector going to Cable 1, the fault is inCable 2 or in the transition connector. If there isa supply through the transition connector but nosignal during the test, connector D2, which is cou-pled to CCU, must be checked. Try to measurethe pin with the connector mounted by inserting athin wire through the rubber grommet on the backof the connector. Connector D can also be discon-nected from CCU and the connector from the seatswitch loosened, and then measure the resistancebetween the CCU connector D2 and the greenlead in the connector for the seat switch. Thereshould be good contact between these, so-calledzero ohm.Seat switch+5VConnector D at CCUD2: Seat switchConnector D at CCUOhm+5VCST Autotest