TT Quattro Roadster L4-1.8L Turbo (AMU) (2002)
Test requirement:
-
Internal resistance of valve OK
-
Slide back rubber boot of fuel injector connector, but leave connector connected.
-
Connect VAG1527B voltage tester between sockets 2 (signal) and 1 (B+).
-
Operate starter briefly (engine can also start).
-
LED must blink.
NOTE: Voltage testers do not go out completely during low current pick-up between activations by the ECM, but rather continue to glow a little and
then get slightly brighter during activation.
If LED does not blink:
-
Connect VAG1598/31 test box at wiring harness to ECM, do not connect ECM. See: Computers and Control Systems/Testing and Inspection/Scan
Tool Testing and Procedures/Scan Tool Testing/Scan Tool Connecting and Initial Checks/Wiring and Component Testing Using VAG1598/31
Test Box
-
Check the following wire connections for open circuit and short circuit to Ground (GND) and B+:
-
Repair open circuit or short circuit if necessary.
If wire connection is OK: