S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
2-Pin Connector
-
Connect LED tester between terminals 1 and 2 of fuel injector harness being tested.
-
Initiate Output Diagnostic Test Mode (DTM).
^
When fuel injector to be checked is activated during Output DTM, LED tester must blink (maximum 5 times).
If LED tester does NOT blink, or if it lights up continuously:
-
Connect VAG 1598 Test Box (using VAG 1598/5 adapter cable) only to harness connector of ECM.
-
Check the following wires for continuity or connection to Ground (GND) using DVOM and wiring diagram.
Terminal # 1 of
VAG 1598
Fuel injector # :
socket number:
1
36
2
17
3
34
4
35
5
16
If open circuits or shorts to GND:
Engine Control Module Harness Connector
-
Repair open circuit between ECM harness connector terminal and terminal 1 of fuel injector harness connector, or repair short circuit to GND.
If NO open circuits or shorts to GND:
-
Replace ECM.