S6 V8-4.2L (BBD) (2004)
-
Insert fuel injector to be tested in a measuring glass from e.g. V.A.G 1602 injection quantity test device.
-
Connect one terminal of fuel injector to engine Ground (GND) using an adapter cable and an alligator clip e.g. from VAG1594A connector test
kit.
-
Connect the second terminal of fuel injector to B+ using e.g. VAG1348/3A remote control, VAG1348/3-2 adapter cable and assisting cable. -
-
Bridge terminals 1 and 65 at test box using wires e.g. from V.A.G 1594 A adapter test kit.
-
Switch ignition on.
-
Fuel Pump (FP) must run.
-
Operate remote control for 30 seconds.
-
After all three fuel injectors of one cylinder row have been activated, place measuring glasses on an even surface.
Specified value for each fuel injector:
Audi A6
Audi S6
95 ... 115 ml.
105 ... 125 ml.
-
If measured value of one or more fuel injectors is outside of specified range, switch Fuel Pump (FP) off (switch ignition off) and replace faulty
fuel injector.
-
Repeat test at fuel injectors of second cylinder row.
-
If the measured values of all fuel injectors are outside the specified range, check fuel pressure. See: Fuel Pressure/Testing and Inspection
NOTE: Also check spray pattern when checking injection quantity. Spray pattern must be the same for all injectors
-
Install fuel injectors together with fuel rail.
Final procedures
After repair work, the following work steps must be performed in the mentioned sequence:
1
-
Check DTC memory "Mode 3: Check DTC memory". See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing and
Procedures/Scan Tool Testing/With Generic Scan Tool/Diagnostic Mode 3: Check DTC Memory
2
-
If necessary, erase DTC memory "Mode 4: Reset/erase diagnostic data". See: Computers and Control Systems/Testing and Inspection/Scan
Tool Testing and Procedures/Scan Tool Testing/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
3
-
Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness
Codes/Audi Drive Cycle/Readiness Code/With Generic Scan Tool/Readiness Code, Generating
-
End diagnosis and switch ignition off.