Electrical diagram of the Motronic control unit, knock sensors, throttle control unit, engine speed sensor (Audi A6 C5)

Scheme 4. Motoronic control unit, knock sensors, throttle control unit, engine speed sensor, coolant temperature sensor for vehicles with ASK, ALG, AGA and ALF engines

• G2 - coolant temperature sensor
• G28 - engine speed sensor
• G61 - knock sensor 1
• G62 - coolant temperature sensor
• G66 - knock sensor 2
• J220 - Motoronic control unit
• J338 - Throttle valve control unit
• T3w - plug connection, 3-pin, grey, to engine speed sensor
• T3x - plug connection, 3-pin, blue, to knock sensor 1
• T3u - plug connection, 3-pin, blue color, to knock sensor 2
• T10n - plug connection, 10-pin, yellow, connecting clamp for E-Box water tank
• 85 - connection to the body ("ground") "1", in the wiring harness of the engine compartment
• 220 - connection to the housing ("ground") ("ground" of the sensor), in the engine wiring harness
• 269 - connection to the housing ("ground") ("ground" of the sensor), in the instrument cluster wiring harness