Monotronic control unit, injection valve, air quantity sensor with VR6 engine (VW Golf 3)

Figure 28. Control device "Monotronic", injection valve, air quantity sensor if there is a VR6 engine:

• B - starter
• D - ignition-starter switch
• G70 - Air quantity measuring device
• J220 - "Motronic" control unit
• N30 - injection valve cylinder N1
• N31 - injection valve cylinder N₂
• N32 - injection valve cylinder N3
• N33 - injection valve cylinder N4
• N71 - idle speed control valve
• N79 - electric heating element (crankcase ventilation)
• N84 - injection valve cylinder N5
• N85 - injection valve cylinder N6
• T2 - double plug, above the relay box
• T2n - double plug, behind the relay box
• T5 - 5-pole plug, above the relay box
• T28 - 28-pin plug, to cylinder head
• T55 - 55-pin plug

Connection points with the body (in circle):

• 138 - connection of "mass" (electronics), in the injection device cable
• 182 - ground connection 1, in the engine section cable
• G3 - positive (+) connection in cable sheath, injection valves

* Only with automatic transmission

Cable color designations:

• ws - white
• sw - black
• ro - red
• br brown
• gn - green
• gr - gray
• li - purple
• ge - yellow
• bl - blue

List of fuses:

• 30A - green color
• 25A - white
• 20A - yellow
• 15A - blue
• 10A - red