Monotronic control unit, lambda probe and ignition system with VR6 engine (VW Golf 3)

Figure 26. Control device "Monotronic", lambda probe and ignition system with VR6 engine:

• F165 - cooling fan thermal switch, third stage
• G6 - fuel pump
• G39 - Lambda probe with heating
• G40 - Hall sensor
• J17 - fuel pump relay
• J220 - Control devices "Monotronic"
• N152 - ignition transformer
• N157 - ignition transformer output stage
• O - ignition distributor
• P - spark plug connector
• Q - spark plugs
• T1 - single plug, to the front wall, near the ignition coil
• T3a - triple plug
• T4 - 4-pin plug, near the exhaust port
• T28 - 28-pin plug, to cylinder head
• T55 - 55-pin plug

Connection points with the body (in circle):

• 137 - connection of "mass" (output stage) in the injection device cable
• 138 - connection of "mass" (electronics), in the injection device cable
• E6 - positive connection 1 (15), in the injection device cable
• E6 - connection, in the injection device cable

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