Volkswagen Passat 1995 Official Factory Repair Manual page 1898

Multiport fuel injection and ignition system
System in Basic Setting
1 2 3 4
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.FU07.24.1
131
Indicated on display (1-4 = Display fields)
- Run engine at idle speed and check specifications.
1
Display group 131: Heated Oxygen Sensor (HO2S)
aging, (O2S) control signal frequency extended
Display xxxx
RPM
Indicated Engine
speed
Working 650 -
range 6000
RPM
Specification 2200 -
2800
RPM
-
Continuation
If specification is not attained:
- Perform a road test to clear HO2S of possible residue
and repeat the test.
Display fields
2 3
xx.xxx V xxx ms
HO2S Signal
voltage frequency
after three extended
way
catalytic
converter
0.000 - -
1.000 V
0.500 - -1200 to
0.700 V 1200 ms
(can
fluctuate
marginally)
If specification is not
attained Page 24-
58 , continuation
Page 59 of 126
24-58
4
xxxxxxxx
O2S
control
status
-
1111x100
Relevance
Page
24-59
12/6/2004