Electronic Control Unit

The ECU controls all engine operations and limits maximum engine speed. It receives information from various input devices and cannot be repaired.

ECU LOCATION

Application	Location
Cabriolet, Golf, GTI 1.8L & Jetta	Behind Firewall In Left, Rear Of Engine Compartment
Corrado	Behind Firewall In Rear, Center Of Engine Compartment
Fox	Behind Passenger Side of Glove Box

Fig 1: Identifying Typical Digifant System Components

Courtesy of VOLKSWAGEN UNITED STATES, INC.

NOTE: Components are grouped into 2 categories. The first category covers INPUT DEVICES, which control or produce voltage signals monitored by the control unit. The second category covers OUTPUT SIGNALS, which are components controlled by the control unit.