Technical characteristics of the injection system (Audi A6 C4)

Engine letter designation	AAN	ABC
Engine power, kW/hp.	128/ 174	110/ 150
Injection system	MPI	MPFI
Maximum rotation speed, rpm	6500	6500
Speed at idle speed, rpm	700 – 800	680 – 810
CO content, % by volume	0,3 – 1,2	0,15 – 1,0
Pressure regulator
System pressure, bar	3,8 – 4,2	3,8 – 4,2
Maintaining excess pressure after 10 minutes:
- after turning off a cold engine	2,2	2,2
- after turning off a hot engine	3,0	3,0
Valve injectors
Volumetric productivity in 30 seconds, ml	85 – 100	85 – 100
Resistances
Idle Speed Control Valve, Ohm	7 – 11	45 – 60
Valve injector, Ohm	15 – 17	13,5 – 17
Solenoid valve of the activated carbon system, Ohm	20 – 28	20 – 28
Intake Manifold Switching Valve, Ohm	25 – 35	–
Exhaust Gas Recirculation Valve, Ohm	25 – 35	–
Throttle potentiometer
– between contacts 1 and 2, kOhm	1,5 – 2,6	1,5 – 2,6
– between contacts 2 and 3
• at idle, kOhm	0,75 – 1,30	0,75 – 1,30
• at full load, kOhm	maximum 3.6	maximum 3.6
Crankshaft speed sensor, kOhm	about 1	about 1
Ignition advance sensor, kOhm	about 1	about 1
Electrical wires, kOhm	maximum 1	maximum 1
Oxygen sensor setup
Signal, mV	350 – 450	350 – 450
Sensor heating system, Ohm	–	3 – 15