check engine AUDI A4 2000 B5 / 1.G AFC Engine Closed Throttle Position Switch Checking And Adjusting Workshop Manual

Requirements

Accelerator pedal cable adjustment OK:

Repair Manual, 2.8 Liter V6 2V Engine
Mechanical, Engine Code(s): AFC, Repair Group 20

Pa
ge 2 of 5 Closed Throttle Position
(CTP
) switch, checkin
g and ad
justin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.24.21

24-75

Adjusting

- Remove throttle body.

- Loosen two throttle position sensor mounting
screws.

Repair Manual, 2.8 Liter V6 2V Engine Mechanical, Engine Code(s):
AFC, Repair Group 20

Checking wiring between CTP switch and ECM - Turn throttle position sensor in direction shown (arrows), without
moving throttle valve shaft, until stop can be felt.
- Tighten throttle position sensor in this position.
- Check CTP switch again page 24
-74
.
- Re-install throttle body and adjust accelerator pedal cable

Terminal assignments for throttle position sensor connector.
- Connect VAG 1598/19 test box to ECM harness connector page 01
-
255
.
- Check wiring for continuity or short to B+ between throttle position
sensor connector terminal 4 (GND) and test box socket D12.

Specified value: max. 1 ohm ( )
Pa
ge 4 of 5 Closed Throttle Position
(CTP
) switch, checkin
g and ad
justin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.24.21