Brake servo vacuum pump relay if fitted 5.
Audi a4 ecm relay.
The ecm power relay is one of the most important relays as it provides power for the vehicle s computer system.
For audi a4 b5 audi s4 1994 1995 1996 1997 1998 1999 2000 2001 model year.
Horn relay dual tone.
So far i know that the ecu gets constant always on 12v at pin 62 switched power at pin 3 and grounds are pins 1 2.
F2 10a rear window blind circuit breaker.
A new relay fixed the problem and the car started right up.
The ecm relay also has a second large wire that also gets power from the power 30 terminal.
Ignition auxiliary circuits relay.
I am not sure if this goes back to the ecu or some were else.
Finally found my ecm relay location.
But i am sure the ecm relay is working correctly.
Relay box audi a4 b6.
Without it the entire engine management system will be disabled and the vehicle will not run.
Power steering control module servotronic if fitted 3.
Fuse box in engine compartment.
This i have tested.