EECU Electric Circuit( EC160B/180B/210B/240B/290B) Solenoid valve on unit injection pump E-ECU Cyl 2 Cyl 4 Engine speed sensor ,cam Engine speed sensor ,crank Fuel Cyl 3 Cyl 6 Connector A New Boost Press. & temp. Coolant Oil 36 36 24 12 BLACK RED 1 2 1 2 n n Cyl 1 Cyl 5 (+) (-) (+) (-) (-) (-) (-) 7 18 31 30 13 2 25 14 3 4 5 12 11 23 22 24 35 36 34 Connector A 13 Connector B Ambient air press. 25 1 4 1 2 25 26 9 10 11 12 7 17 8 3 13 31 5 24 (-) AH Preheat relay 12 to Fuse 140A Emergency speed control J1939_H J1939_L J1708_A J1708_B GND 24V(+) Power from fuse Coolant level Inlet press. Inlet temp.
25 13 1 Preheat coil Connector B Volvo Construction Equipment Customer Support UPDATE - EC160B~460B - 05-1 3 2 1 4 4 2 (+) (-) 2 3 (-) 4