A4 Quattro Cabriolet V6-3.0L (BGN) (2005)
If specified value is not attained:
-
Check wiring connections.
Checking actuation
-
Connect multimeter as follows to measure voltage.
Relay carrier in electronics box,
Measure to
plenum chamber, position 2
terminal
4
Battery positive
-
Switch ignition on.
Specified value: approx. battery voltage
If specified value is not attained:
-
Switch ignition off.
-
Connect test box VAG1598/31 to wiring harness for engine control module; do not connect engine control module.
-
Check for open circuit and short to positive or ground in following wiring connection:
Relay carrier in electronics box,
Test box V.A.G 1598/31
plenum chamber, position 2
Socket
terminal
4
23
-
Repair any open/short circuit as necessary.
If no malfunction is found:
-
Replace Motronic Engine Control Module (ECM) power supply relay -J271-.