S5 Quattro Coupe V8-4.2L (CAUA) (2009)
If no malfunctions are found in the wiring:
Checking wiring connections
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 => [ Engine Control Module, Replacing ] See: Computers and Control
Systems/Engine Control Module/Service and Repair/Engine Control Module, Replacing.
-
Using a multimeter, check the Fuel Metering Valve 2 (N402) electrical harness connector terminal 2 to the Engine Control Module (ECM) (J623)
electrical harness connector T60 terminal 35 for resistance.
Specified value: 1.5 ohms Max.
If the specification was not obtained:
-
Check the wiring for an open circuit, a short circuit to each other, Battery (+) or Ground (GND).
-
If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring:
-
Erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 01 - 09/Diagnostic Mode 04 - Erase DTC Memory.
-
Perform a road test to verify repair.
If the DTC does not return:
Repair complete, Generate readiness code. Refer to => [ Readiness Code ] See: Computers and Control Systems/Testing and Inspection/Monitors,
Trips, Drive Cycles and Readiness Codes.
-
End diagnosis.
If the DTC returns and no malfunction is found in the wiring and voltage supply was OK:
-
Replace the Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Computers and Control
Systems/Engine Control Module/Service and Repair/Engine Control Module, Replacing.