A6 Sedan V6-2.8L (AHA) (1998)
If resistance is NOT OK:
-
Remove ignition wires from ignition coils and measure resistance between ends of respective ignition wires.
Specification: approx. 4.0-6.0 k Ohms
-
Using multimeter and adapters from VAG 1594 connector test kit, measure resistance across both ignition wire connectors of respective ignition
coil.
Specification: 8.0-14.0 k Ohms.
If resistance values are not as specified:
-
Replace coils.
If resistance values are OK:
-
Check signal for power output stage.
Checking signal for power output stage
-
Remove connectors from all 6 injectors (DTC memory will have to be checked and erased later).
-
Switch ignition on.
-
Connect LED tester VAG 1527 between engine ground and connector terminal 3.
-
Crank starter for several seconds.
LED in voltage tester must flash.
-
Repeat test on 5-pin connector terminals 4 and 5.
If LED flashes:
-
Replace ignition coils -N-, -N128- and - N158- with power output stage -N122-.
If LED does not flash:
-
Connect VAG 1598/22 test box to ECM harness connector.Refer to "Scan tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG