TT Coupe L4-2.0L Turbo (BPY) (2008)
-
Using a Multimeter, check the Leak Detection Pump (LDP) (-V144-) electrical harness connector terminal 3 to the Motronic Engine Control
Module (ECM) Power Supply Relay (J271) socket 2/87 for resistance.
Specified value: 1.5 ohms max
If the specification was not obtained:
-
Check the wiring for a short circuit to Battery positive (+) or an open circuit.
-
Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-
If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and if the voltage supply was OK:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
-
Install the test box.
If the manufacturers test box is not being used. Perform the following step.
-
Remove the Engine Control Module (ECM) (J623). Refer to => [ replacing ] See: Computers and Control Systems/Engine Control
Module/Testing and Inspection/Engine Control Module (ECM) (J623).
-
Using a Multimeter, check the Leak Detection Pump (LDP) (-V144-) electrical connector terminal 1 to Engine Control Module (ECM) (J623)
electrical connector T94 terminal 40 for an open circuit.
-
Using a Multimeter, check the Leak Detection Pump (LDP) (-V144-) electrical connector terminal 2 to Engine Control Module (ECM) (J623)
electrical connector T94 terminal 94 for an open circuit.