The UK quattro Network

1982 Model Year - notes to Wiring Diagram 3

• A line connecting the ignition output stage to the coil is omitted from the main diagram in track 14 - this line is correctly drawn in track 20 of Diagram 13.
• The main diagram does not identify the pin assignments for the rpm sender (G28) and timing position sender (G4). These are 3-2-1 in both cases, left to right. The diagram also suggests that the shield connection - the leftmost in each case - is connected to the sender. This is not the case - pin 3 should be open-circuit to both pins 1 and 2.
• Tracks 32 and 33 show a position for J95 - a cold start pulse relay. This relay was deleted in the 1982 model year and will not be found on the car.
• The function of the blocking diode shown in track 45 is not clear - current cannot flow down the track against the diode's bias, and it cannot flow through the diagram as shown because that end is grounded. Sometimes diodes are added across solenoids and relays to reduce contact damage. This diode is not shown for any other model year.
• The main diagram shows F25 in track 47 as "normally open". This is incorrect - it is normally closed and opened at full throttle to de-energise N54, the full load enrichment solenoid.