S4 V8-4.2L (BHF) (2004)
-
Specified value: Approx. battery voltage
If specified value is not obtained:
-
Check wiring connection from Secondary Air Injection (AIR) Pump Relay -J299- (in 3-socket relay carrier in electronics box, plenum chamber)
via Fuse in fuse holder -S234- (position 34) to Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
-
Repair wiring connection if necessary.
Checking activation of Secondary Air Injection (AIR) Pump Relay -J299-
-
Switch ignition off.
-
Remove Secondary Air Injection (AIR) Pump Relay -J299-.
-
Connect voltage tester V.A.G 1527 B as follows:
3-socket relay carrier in
Measure to
electronics box, plenum
chamber, position 2terminal
-6 -
B+
-
Vehicle Diagnostic, Testing and Information System VAS 5051 A connected, "Vehicle Self-Diagnosis" "01 Engine electronics" selected. Ignition
must be switched on for this.
Display on VAS 5051 A:
-
In selection - 1 -, click on function "03 - output Diagnostic Test Mode (DTM)".
-
Press button repeatedly until Secondary Air Injection (AIR) Pump Relay -J299- is activated.
-
LED must blink
-
End function "03 - output Diagnostic Test Mode (DTM)" by pressing button.
-
Select "06 - End Output".
-
Switch ignition off.
If LED does not blink: