Component description Control unit plug connector Pinouts 19 1 . . . . . . . . . . . . . . . . . . . . . . . 37 20 . . . . . . . . . . . . . . . . . . . . . . 55 38 . . . . . . . . . . . . . . . . . . . . . .
Pin assignments of control unit plug connector EDC Pin Connection to component ( O =Output , I =Input) 1 Injection pump controller pin 8 O Jumper to pin 2 (activation of fuel volume regulator) O 2 Jumper to pin 1 (activation of fuel-delivery regulator) O 3 Control-slide mechanism 4 Control-slide mechanism 5 Not used 6 Not used 7 Not used 8 Not used 10 Injection pump controller pin 1 (control rod position sensor, reference coil) 9 Injection pump controller pin 5 (control rod position sensor, instrument coil) 11 Injection pump controller pin 6 (control rod position sensor, centre pick–off) 12 Not used 13 Negative from control unit for (Sensor ground) rpm sensor charge-air pressure sensor drive stage selection charge-air temperature sensor coolant temperature sensor resistor bank fuel temperature sensor 14 Safety-relay O 15 Control unit power supply battery + (via main relay and fuse) I 16 Control unit power supply battery + (via main relay and fuse) I 17 Earth for auxiliary rpm sensor and needle movement sensor 18 Power supply battery – 19 Power supply battery – 20 EDC indicator lamp and diagnostic lamp O 21 RPM sensor (twisted with cable pin 13) I 22 Auxiliary rpm sensor (twisted with cable pin 17) I 23 Intermediate engine speed control ZDR 1 I 24 Not used 8