X21 Engine plug III

Plug connector overview

NumberX-pin, colourDescription
X2118-pin, blackMotor connector III

Pin assignments at plug connector X21

PinTypeDescription / Signal typeConnection /
Measuring notes
1 Not used 
   
2 Not used 
   
3 Rear left speed signalB: Engine control module II (DME)
   
4 Not used 
   
5 Gear indicator signalB: AGS transmission control unit
   
6 Selector lever lockout signal (positive)B: AGS transmission control unit
   
7 Selector lever lockout signal (negative)B: AGS transmission control unit
   
8 up to 1995_08 ASC passive signal as of 1995_09 Not usedB: AGS transmission control unit
   
9 Not used 
   
10 Signal, steptronicB: AGS transmission control unit
   
11 Signal, steptronicB: AGS transmission control unit
   
12 Signal, gearshift position L2B: Connector, signal L2
   
13 Signal, lights switch panelB: AGS transmission control unit
   
14 Not used 
   
15 Signal, gearshift position L5B: AGS transmission control unit
   
16 Signal, gearshift position L6B: AGS transmission control unit
   
17 Not used 
   
18 Kick-down signalB: EML control unit