S4 Quattro Cabriolet V8-4.2L (BHF) (2008)
/Page-1146003.png)
-
Check the voltage supply of the Throttle Valve Control Module (J338) to the Motronic Engine Control Module (ECM) (J623).
-
.
Checking voltage supply and wiring
-
Switch the ignition on.
-
Using a Multimeter, check the Throttle Drive (for Electronic Power Control (EPC)) (G186) at the Throttle Valve Control Module (J338) electrical
harness connector terminals 2 to 6 for voltage.
Specified value: at least 4.5 V
-
Switch the ignition off.
If the specification was not obtained:
-
Using a Multimeter, check the Throttle Drive (for Electronic Power Control (EPC)) (G186) at Throttle Valve Control Module (J338) electrical
harness connector terminals to the Motronic Engine Control Module (ECM) (J623) electrical harness connector T121 terminals for an open
circuit.
