Motronic 1.0 Connector Wiring

Pin Pin
1 Ignition coil output 19 Ground
2 Idle switch 20 Main relay
3 WOT switch * 21 Tachometer *
4 Cranking signal 22 AFM Temp sensor
5 Ground/Crank PosS Gnd 23 -Inlet Air Temp/Crank SpS Gnd.
6 AFM ground 24 O2 sensor signal *
7 AFM signal 25 Crank position sensor 1
8 Crank speed sensor 1 26 Crank position sensor 2
9 AFM supply 27 Crank speed sensor 2
10 Auto only special * 28 Water Pressure switch
11 Fuel consumption gauge * 29 A/C switch **
12 Simplified CO testing ** 30 +Inlet Air Temp
13 Water Temp 31 O2 sensor preheating-relay *
14 Injector output cyl 3&4 32 -
15 Injector output cyl 1&2 33 ISCV pulse **
16 Ground 34 ISCV pulse **
17 Ground 35 Injector ground
18 -
* = connected internally but not used, ** = not connected internally