24-50
- Switch ignition ON.
Specified value: 400 50 mV If the specified value is not obtained, check
wiring to ECM as follows:
- Switch ignition OFF.
- Connect VAG 1598/19 test box to ECM harness
connector page 01
-255
.
- Check wiring for continuity between terminal 4
(HO2S -G39-) and terminal 20 on ECM
connector A.
Specified value: max. 1
- Check wiring for continuity between terminal 4
(HO2S 2 -G108-) and terminal 21 on ECM
connector A.
Specified value: max. 1 If the specified value is not obtained:
- Eliminate short or open circuit in wiring using wiring diagram.
Pa
ge 3 of 7 Heated Ox
yg
en Sensor
(HO2S
) before Three Wa
y Catal
ytic Converter
(TWC
), checkin
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.FU01.24.12
