Testing idling switch -F60: Audi 2.0 (ABK, ADW)

ADW
Special tools, testers and auxiliary equipment required

Hand-held multimeter V.A.G 1526 or V.A.G 1526 A
Fault reader V.A.G 1551 (or vehicle system tester V.A.G 1552) with wire V.A.G 1551/3
Adapter set V.A.G 1594 A
Test box V.A.G 1598/22
Feeler gauge

Test requirements:

Basic setting of throttle valve OK => page
24-94

Connect fault reader V.A.G 1551 (V.A.G 1552) and select the engine electronics control unit using "Address word" 01. Engine must not be running.
(Connect fault reader and select engine electronics control unit => Page
01-2
.)
Read measurement block 1
⇒
1
2
3
4
Read measured value block, display group 001 => Page
01-57
.

Test display in display zone 4.
Specification:
4. Position = 0 (idling switch closed)

Note:

For the test described the readouts 1 ... 3 and 5 ... 8 of the 8 digit readout are of no significance and can therefore be ignored for the test described.

Open throttle valve slightly.
(0.15 ... 0.5 mm).
Specification:
4th Position = 1 (idling switch open)

If the specified values are attained:

Press the ⇒key.

Rapid data transfer
HELP
Select function XX
Indicated on display:

Enter "06" for "End output" function and confirm entry with Q key.

If the specified values are not obtained:

With the ignition switched off, connect test box V.A.G 1598/18 to connector for engine control unit => Page
24-16
.

Test for open circuit and short to positive or earth in the following wiring connections:

-F60 connector / / Contact · Test box / V.A.G 1598/18 / socket
1 · 18
2 · 35

Rectify any open/short circuit as necessary.
If the wiring is OK, check the setting of the idling speed switch

Adjusting idling switch

Remove the throttle valve unit.
Set hand held multimeter V.A.G 1526 to resistance measuring range and connect to the contacts of the idling speed switch using test leads from V.A.G 1594 A.
Specification: 0 ω

Insert an 0.15 ... 0.5 mm feeler gauge between the throttle valve stop and the adjuster screw.
Specification: ∞ ω

If the specified values are not obtained:

Loosen the bolts of the idling speed switch and alter the position of the switch in the slots.
Insert an 0.3 mm feeler gauge between the throttle valve stop and the adjuster screw
Specified value: ∞ ω

Remove the feeler gauge.
Specification: 0 ω

If the specified values are attained:

Tighten the bolts of the idling speed switch and secure with locking varnish.

If the specified values are not obtained:

Replace the idling speed switch.