Volvo Brick | Diagrar Top

For many Volvo "Brick" enthusiasts—owners of the 240, 740, and 940 series—the top-down view of the iconic Redblock engine

2. Ignition System (EZ-116K – Volvo’s separate ignition computer)

Note:

Socket #4 is almost always empty. Sockets are often numbered on the plastic housing itself. volvo brick diagrar top

What is the "Volvo Brick" Diagnostic Unit?